Step-by-Step Guide: Building a Reddit Clone with Adalo

Building a Reddit-style community platform from scratch presents serious technical challenges—voting systems, nested comment threads, user karma tracking, and subreddit-style organization all require sophisticated database architecture and logic. Traditional development means hiring separate teams for web, iOS, and Android, coordinating across codebases, and spending months before your first user ever upvotes a post.

That's where Adalo comes in. Adalo is a no-code app builder for database-driven web apps and native iOS and Android apps—one version across all three platforms. AI-assisted building and streamlined publishing enable launch to the Apple App Store and Google Play in days rather than months. This makes it possible to create a fully functional community platform with complex features like threaded discussions and voting mechanics without writing a single line of code.

Why Adalo Is Perfect for Building a Reddit-Style Community App

Adalo is a no-code app builder for database-driven web apps and native iOS and Android apps—one version across all three platforms, published to the Apple App Store and Google Play. This makes it an ideal choice for creating a Reddit clone, where you need robust database functionality to manage posts, comments, votes, and user-generated communities—all accessible whether your members are on their phones or desktop browsers.

Launching your community app on the app stores gives you a significant advantage over web-only platforms. Native apps enable push notifications that alert users when someone upvotes their post, replies to their comment, or posts in their favorite community—the kind of real-time engagement that transforms casual visitors into dedicated community members. With Adalo, you can build this cross-platform experience without writing code or managing separate development projects.

Why Adalo Works for Building a Reddit-Style Community App

Building a community platform that rivals Reddit requires handling complex features: voting systems, threaded comments, user karma, and subreddit-style communities. Traditional development would mean months of coding and separate codebases for web, iOS, and Android. Adalo, an AI-powered app builder, solves this by letting you create one version that publishes across all three platforms—web, Apple App Store, and Google Play Store—from a single codebase.

Publishing your community app to the app stores opens up powerful engagement opportunities. With native distribution, you can leverage push notifications to alert users when someone replies to their posts or comments, driving the kind of active participation that makes community platforms thrive. Whether your users prefer browsing on desktop or scrolling through their phones, they'll have a seamless experience across all platforms.

This comprehensive tutorial walks you through building a Reddit-style community platform using Adalo's visual builder. While some features like real-time updates and complex algorithms aren't possible, you'll create a functional app with voting systems, threaded comments, and subreddit communities. With unlimited database records on paid plans, your community can grow without hitting storage ceilings that plague other platforms.

Prerequisites and Initial Setup

Step 1: Create Your Adalo Account

1. Navigate to Adalo.com and create an account
2. Click "Create New App" from your dashboard
3. Select "Web App" (recommended for Reddit-style browsing experience)
4. Name your app (e.g., "RedditClone" or "Community Hub")
5. Choose "Start from Scratch" for full customization control

Magic Start can generate complete app foundations from a simple description. Tell it you need a community discussion platform, and it creates your initial database structure, screens, and user flows automatically—what used to take days of planning happens in minutes.

Step 2: Configure App Settings

1. Set primary color scheme (orange/white for Reddit-style appearance)
2. Choose light theme with optional dark mode toggle
3. Select readable fonts like Arial or Roboto
4. Enable responsive design for multiple screen sizes
5. Click "Continue" to access the main editor

Setting Up the Database

Step 3: Enhance the Users Collection

1. Click the Database icon in left sidebar
2. Select the default "Users" collection
3. Add these properties (click "+ Add Property"):
   • Username (Text - unique identifier for public display)
   • Avatar (Image)
   • Bio (Text - check "Multiline")
   • Post Karma (Number - default: 0)
   • Comment Karma (Number - default: 0)
   • Total Karma (Number)
   • Account Created (Date & Time - Automatic)
   • Is Verified (True/False - default: false)
   • Is Banned (True/False - default: false)

Database documentation provides additional setup guidance.

Step 4: Create Subreddits Collection

1. Click "+ Add Collection"
2. Name it "Subreddits"
3. Add properties:
   • Name (Text - unique subreddit identifier)
   • Display Name (Text - public-facing title)
   • Description (Text - Multiline)
   • Icon (Image)
   • Banner (Image)
   • Rules (Text - Multiline)
   • Created Date (Date & Time - Automatic)
   • Member Count (Number - default: 0)
   • Is Private (True/False - default: false)
   • Is NSFW (True/False - default: false)

Step 5: Create Posts Collection

1. Click "+ Add Collection"
2. Name it "Posts"
3. Add properties:
   • Title (Text - required field)
   • Content Type (Text) - Values: "text", "link", "image"
   • Text Content (Text - Multiline)
   • Link URL (Text)
   • Media (Image)
   • Created At (Date & Time - Automatic)
   • Score (Number - default: 0)
   • Upvotes (Number - default: 0)
   • Downvotes (Number - default: 0)
   • Comment Count (Number - default: 0)
   • Is Pinned (True/False - default: false)
   • Is Locked (True/False - default: false)
   • Flair (Text - optional categorization)

Step 6: Create Comments Collection

1. Click "+ Add Collection"
2. Name it "Comments"
3. Add properties:
   • Content (Text - Multiline)
   • Created At (Date & Time - Automatic)
   • Score (Number - default: 0)
   • Upvotes (Number - default: 0)
   • Downvotes (Number - default: 0)
   • Is Deleted (True/False - default: false)
   • Depth Level (Number - for visual nesting control)

Step 7: Create Votes Collection

1. Click "+ Add Collection"
2. Name it "Votes"
3. Add properties:
   • Vote Type (Text) - Values: "upvote", "downvote"
   • Target Type (Text) - Values: "post", "comment"
   • Created At (Date & Time - Automatic)

Step 8: Create Memberships Collection

1. Click "+ Add Collection"
2. Name it "Memberships"
3. Add properties:
   • Role (Text) - Values: "member", "moderator", "admin"
   • Joined Date (Date & Time - Automatic)
   • Is Banned (True/False - default: false)
   • Ban Reason (Text)

Step 9: Set Up Database Relationships

1. In Posts:
   • Add "Author" → Users (Many to One)
   • Add "Subreddit" → Subreddits (Many to One)
2. In Comments:
   • Add "Author" → Users (Many to One)
   • Add "Post" → Posts (Many to One)
   • Add "Parent Comment" → Comments (Many to One - enables threading)
3. In Votes:
   • Add "User" → Users (Many to One)
   • Add "Post" → Posts (Many to One)
   • Add "Comment" → Comments (Many to One)
4. In Memberships:
   • Add "User" → Users (Many to One)
   • Add "Subreddit" → Subreddits (Many to One)
5. In Subreddits:
   • Add "Creator" → Users (Many to One)

With Adalo's no data caps on paid plans, your community can scale to millions of posts, comments, and votes without hitting storage limits that force expensive upgrades or data purges.

Building the Home Feed

Step 10: Create Home Screen Layout

1. Add new screen "Home"
2. Add App Bar component at top:
   • Logo/title positioned left
   • Search icon center
   • User avatar right side
3. Add Tab Bar below app bar:
   • "Hot" tab (default active)
   • "New" tab
   • "Top" tab
   • "Rising" tab

Step 11: Build Post Feed List

1. Add Custom List component:
   • Data source: Posts collection
   • Filter: Is Deleted = false
   • Sort: By Score (descending) for "Hot" tab
2. For each list item display:
   • Subreddit name and icon
   • Post title (truncated after 2 lines)
   • Author username
   • Posted date/time
   • Vote buttons with current score
   • Comment count badge
   • Share button

Custom Lists guide explains advanced filtering options. Magic Add can help here—describe the feed layout you want, and it generates the component configuration automatically.

Step 12: Implement Voting System

1. Add upvote/downvote buttons to each post
2. On upvote button click:
   • Check if existing vote record exists for this user/post
   • If no vote: Create new vote (type: "upvote"), increment post score
   • If downvote exists: Delete existing, create upvote, add 2 to score
   • If upvote exists: Delete vote, decrement score by 1
3. On downvote button click:
   • Apply same logic but with opposite values
4. Update the post's Score only (karma calculations are handled in Step 24)

Step 13: Add Feed Sorting Algorithms

1. For "Hot" tab sorting:
   • Sort posts by Score (descending)
2. For "New" tab sorting:
   • Sort by Created At (most recent first)
3. For "Top" tab sorting:
   • Add time filter dropdown (today, week, month, year, all)
   • Sort by Score value descending within time frame

Creating Subreddit Communities

Step 14: Build Subreddit Screen

1. Add new screen "Subreddit"
2. Add header section containing:
   • Banner image (full width)
   • Subreddit icon (circular)
   • Community name and member count
   • Join/Leave button (conditional text)
3. Add description text area
4. Add community rules sidebar (web only, conditional visibility)

Step 15: Create Join/Leave Functionality

1. Add Button component with conditional text
2. Set text conditions:
   • "Join" when no membership record exists
   • "Leave" when membership record found
3. Configure click actions:
   • If joining: Create new Membership record
   • If leaving: Delete existing Membership record
   • Update Subreddit member count (+1 or -1)

Step 16: Build Create Subreddit Screen

1. Add new screen "Create Subreddit"
2. Add form elements:
   • Name input with uniqueness validation
   • Display name input field
   • Description textarea (multiline)
   • Icon image picker component
   • Banner image picker component
   • Community rules textarea
   • Privacy settings toggle
3. On form submission:
   • Create new Subreddit record
   • Create initial Membership (creator as admin role)
   • Navigate to newly created subreddit

Implementing Post Creation

Step 17: Create Submit Post Screen

1. Add new screen "Submit Post"
2. Add Dropdown for subreddit selection:
   • Data source: Current user's memberships
   • Display field: Subreddit name
3. Add post type selector using tabs:
   • Text post option
   • Link post option
   • Image post option

Step 18: Build Post Type Forms

1. For text posts:
   • Title input (required, 300 character limit)
   • Text editor component (multiline textarea)
   • Flair selector dropdown (optional)
2. For link posts:
   • Title input field
   • URL input with format validation
   • Link preview generation
3. For image posts:
   • Title input field
   • Image picker component
   • Caption field (optional text area)

Step 19: Add Post Validation

1. Before submission, verify:
   • User has membership in selected subreddit
   • Title length meets requirements (minimum 3, maximum 300)
   • Content field not empty
   • User account not banned
2. On successful validation:
   • Create new Post record
   • Increment user's post karma (+1)
   • Navigate to post detail screen

Building the Comment System

Step 20: Create Post Detail Screen

1. Add new screen "Post Detail"
2. Display complete post information:
   • Full title and content
   • Expanded media display
   • Vote buttons and current score
   • Action buttons (share, save, report)
3. Add comment input field at bottom
4. Add comments list below post content

Step 21: Implement Threaded Comments

1. Add Custom List for top-level comments:
   • Filter: Post = Current Post AND Parent Comment is empty
   • Sort options: Score descending OR Created At
2. For each comment item show:
   • Author username and avatar
   • Comment content text
   • Upvote/downvote buttons with score
   • Reply button
   • Timestamp (posted date/time)
3. Add nested comment list for replies:
   • Filter: Parent Comment = Current Comment
   • Apply indentation using margin/padding styles

Step 22: Create Comment Reply System

1. Add "Reply" button to each comment
2. On reply button click:
   • Show inline text input field
   • Add submit and cancel buttons
   • On submit: Create comment with Parent Comment relationship
   • Increment comment's Depth Level by 1
   • Update parent post's comment count
3. Limit visual nesting to 5-7 levels for readability

User Profiles and Karma

Step 23: Build User Profile Screen

1. Add new screen "User Profile"
2. Display user information section:
   • Avatar image and username
   • Total Karma (plus Post Karma and Comment Karma)
   • Account creation date
   • Bio text area
3. Add profile tabs for different content:
   • User's posts list
   • User's comments list
   • Saved items list
   • About/info section

Step 24: Implement Karma Calculation

1. On upvote received by user:
   • If vote target is post: Add 1 to author's post karma
   • If vote target is comment: Add 1 to author's comment karma
2. On downvote received by user:
   • Subtract 1 from appropriate karma type (minimum value 0)
3. Update Total Karma alongside the specific type (post/comment) on each vote, then display Total Karma prominently in the interface.

Step 25: Create User Settings

1. Add new screen "Settings"
2. Include configuration sections:
   • Profile editing (avatar upload, bio editing)
   • Email notification preferences
   • Push notification settings
   • Privacy and visibility options
   • Account management tools

Search and Discovery

Step 26: Build Search Functionality

1. Add new screen "Search"
2. Add Text Input component for search queries
3. Add search scope tabs:
   • Posts search results
   • Subreddits search results
   • Users search results
   • Comments search results
4. Implement content filtering:
   • Filter posts/comments containing search query text
   • Filter subreddits by name or description match
   • Filter users by username match

Step 27: Create Discover Screen

1. Add new screen "Discover"
2. Add discovery sections:
   • Trending subreddits (sorted by member count)
   • Popular posts across all subreddits
   • Recommended subreddits based on user's current memberships
3. Use Custom Lists with appropriate data filters

Moderation Features

Step 28: Add Moderator Tools

1. Create "Mod Tools" screen
2. Set visibility: Memberships → Role for the current subreddit is "moderator" or "admin"
3. Add moderation sections:
   • Reported content review queue
   • User ban/unban interface
   • Post pin/unpin controls
   • Comment lock/unlock options
   • Subreddit settings editor

Step 29: Implement Reporting System

1. Add "Report" button to posts and comments
2. Create Reports collection with properties:
   • Report reason (dropdown selection)
   • Additional details (text area)
   • Reporter user relationship
   • Reported content relationship
3. Display reported items in moderation queue for action

Working with Platform Limitations

Step 30: Handle Missing Features

Cannot Implement:

• True real-time updates (use manual refresh buttons)
• Complex markdown text formatting
• Live vote/comment counters
• Native video hosting capabilities
• Advanced search ranking algorithms

Workarounds:

• Manual refresh buttons for feed updates
• Basic text formatting using simple markers
• External video embedding via URL links
• Simple text-matching search functionality

Step 31: Optimize Performance

1. Limit initial list loads to 20-25 items maximum
2. Implement "Load More" button for pagination
3. Use conditional visibility strategically to reduce render load
4. See Optimize performance
5. Minimize database relationship calls per screen load

X-Ray identifies performance issues before they affect users, highlighting slow queries or heavy screens so you can optimize proactively. With Adalo 3.0's infrastructure overhaul (launched late 2026), apps run 3-4x faster than before, and the modular architecture scales to serve apps with over 1 million monthly active users.

Testing and Launch

Step 32: Test Core Features

1. Create multiple test user accounts
2. Test post creation across different subreddits
3. Verify voting system affects karma calculations correctly
4. Test comment threading at various depth levels
5. Verify moderator tools function properly
6. Test search functionality across all content types

Step 33: Prepare for Publishing

1. Upgrade to a paid plan (starting at $36/month with unlimited usage and no record limits)
2. Configure custom domain
3. Create comprehensive content moderation policy
4. Draft community guidelines and rules
5. Build user onboarding flow for new accounts

Adalo handles the complex App Store submission process, so you can focus on your community's features and user experience instead of wrestling with certificates, provisioning profiles, and store guidelines.

Additional Resources

• App Academy - Advanced development tutorials
• Component documentation - Comprehensive component guides
• YouTube tutorials - Video learning content
• Template library - Pre-built components and templates

Important Considerations

Cost Breakdown:

• Adalo starts at $36/month with unlimited usage and unrestricted database storage
• Compare to Bubble at $59/month with Workload Units and record limits, or Glide at $60/month with data row restrictions and no app store publishing
• Full pricing details: Pricing

Performance Guidelines:

• Target screen load times under 3 seconds
• Implement lazy loading for image content
• Compress images before upload
• Use External collections for large data sets

Third-Party Enhancements:

• Automation via Custom actions
• External data via External collections

This Reddit clone provides comprehensive community platform functionality. While it won't replicate Reddit's advanced real-time features and complex algorithms, it delivers essential functionality for engaging community discussions, content sharing, and social interaction—with the scalability to grow alongside your community.

FAQ

Question	Answer
Why choose Adalo over other app building solutions?	Adalo is an AI-powered app builder that creates true native iOS and Android apps. Unlike web wrappers, it compiles to native code and publishes directly to both the Apple App Store and Google Play Store from a single codebase—the hardest part of launching an app handled automatically.
What's the fastest way to build and publish an app to the App Store?	Adalo's drag-and-drop interface and AI-assisted building let you go from idea to published app in days rather than months. Magic Start generates your app foundation from a description, and Adalo handles the complex App Store submission process so you can focus on features instead of certificates and provisioning profiles.
Can I implement a voting and karma system like Reddit in Adalo?	Yes, Adalo supports building complete voting systems with upvotes, downvotes, and karma calculations. You'll create a Votes collection to track user interactions, then configure actions to update post scores and user karma values automatically when votes are cast.
Does Adalo support threaded comments for community discussions?	Adalo handles threaded comments by using a self-referential relationship in your Comments collection. Each comment can have a 'Parent Comment' relationship, allowing replies to nest under original comments with visual indentation for easy readability.
What are the limitations when building a Reddit clone in Adalo?	Adalo cannot implement true real-time updates, complex markdown formatting, live vote counters, or native video hosting. However, you can use workarounds like manual refresh buttons, external video embedding via URLs, and simple text-matching search to deliver a functional community platform.
Can I send push notifications to engage community members?	Yes, when you publish your community app as a native iOS or Android app through Adalo, you can leverage push notifications to alert users when someone replies to their posts or comments. This drives the active participation that makes community platforms successful.
How long does it take to build a Reddit-style community app?	With Adalo's visual builder and Magic Start, you can have a functional community app with voting, comments, and subreddits in a few days. The tutorial covers all core features, and the drag-and-drop interface means no coding delays.
Do I need coding experience to build this app?	No coding experience required. Adalo's visual builder has been described as "easy as PowerPoint," and Magic Add lets you describe features in plain language to generate components automatically.
How much does it cost to build and publish a community app?	Adalo paid plans start at $36/month with unlimited usage, no record limits, and app store publishing included. Compare to Bubble at $59/month with usage-based charges and record limits, or Glide at $60/month without app store publishing capability.
Can my community app scale as it grows?	Yes. Adalo 3.0's modular infrastructure scales to serve apps with over 1 million monthly active users, with no upper ceiling. Paid plans include unlimited database records, so your community can grow without hitting storage limits that force expensive upgrades.