Comparison

MultiSet vs Happy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MultiSet

Features
Read full description

Scan a space with your iPhone and MultiSet builds a 3D map of it. Point your camera at that space later, from any angle, and the app works out exactly where you are standing, down to a few centimeters. That is visual positioning. This app is the field tool for it. SCAN AND BUILD MAPS Capture a room, a floor, or a whole building with LiDAR. Large sites are mapped across several sessions and merged into one coordinate system, so a warehouse does not have to be scanned in one go. Scans upload in the background and save as drafts if you lose signal. TEST ON SITE Open any map and localize against it then and there. You see the pose, the confidence, and the response time, with the reconstructed mesh drawn over the real room so you can tell at a glance whether it lines up. TRACK OBJECTS Upload a 3D model and the app recognizes that object in the camera feed and traces its outline in place. PLACE CONTENT IN A REAL SPACE Pin 3D text, images, and location markers to a mapped space, set the points people should be guided to, and publish it. Visitors open it by scanning a QR code. No install, no account, no App Store. GEOREFERENCE Capture control points and tie a map to real world coordinates. INSPECT MESHES Open the reconstructed mesh of any map or object in a 3D viewer. Orbit, zoom, switch shading, check triangle counts. BUILT FOR DEVELOPERS Everything here runs on the same visual positioning system behind the MultiSet SDKs for Unity, iOS, Android, Quest, and WebXR. Maps you build in this app work in your own builds. Requires a MultiSet account, free to create at developer.multiset.ai. Scanning needs an iPhone or iPad with LiDAR. Localization, object tracking, and published experiences run on any device that supports ARKit.

About

Happy

This app provides a secure mobile interface for AI coding assistants, allowing you to continue sessions and monitor progress from anywhere. It features end-to-end encryption and a zero-knowledge architecture for ultimate privacy. Seamlessly switch between desktop and mobile for uninterrupted AI coding.

Highlights
  • Seamless desktop and mobile session continuation
  • Push notifications for AI tasks
  • Offline access to conversation history
  • End-to-end encryption for code privacy
  • Real-time streaming of AI responses
  • Zero-knowledge architecture
Features
Read full description

Your coding agent shouldn't wait for you to get back to your desk. A task can run for an hour and then stop five minutes in to ask for permission or a decision. Happy lets you answer from your phone, and the same agent carries on in the same repository with the same tools and context. Happy is the mobile app for Claude Code and Codex. The agents keep running on your own computer, and your phone is how you start them, steer them and review their work. WHAT YOU CAN DO FROM YOUR PHONE • Start a new session or pick up one you began at your desk • Get notified when an agent needs input or finishes • Approve or deny permission requests, or let a session run in Auto mode • Choose the model and reasoning effort from the providers set up on your computer • Review changes: a file list, colored diffs, and the full set of changes on a branch • Attach a screenshot or photo to your prompt • Browse sessions in one list or grouped by project, with each checkout's chats as tabs • Open a side chat next to a session without losing your place • Drafts follow you between your phone and your computer HOW IT WORKS Happy runs on your computer, and this app connects to it. 1. Install Happy Desktop from happy.engineering, or if you prefer the terminal, run: npm install -g happy 2. Create an account in the app. You don't need an email address or a password. 3. Scan the QR code your computer shows to link it to your phone. Then start a session from either device. What you see on your phone is the same live session that's running on your computer. YOU WILL NEED • A computer running Happy Desktop or the Happy CLI • Access to the coding agents you want to use, such as a Claude or ChatGPT/Codex plan or API key. Happy uses your existing accounts. PRIVATE BY DESIGN Sessions are end-to-end encrypted. Your code, agent and encryption keys stay on your devices. Happy's servers only relay and store encrypted session data and can't read your prompts, responses or code. OPEN SOURCE The app, the CLI and the server are MIT-licensed and on GitHub. Read the code, run your own build or host your own server. ALSO ON DESKTOP Happy Desktop adds a harness that works across providers and lets you switch models in the middle of a task. The sessions it starts show up on your phone too. Happy is an independent project. It is not affiliated with or endorsed by Anthropic or OpenAI. Claude and Claude Code are trademarks of Anthropic. Codex and ChatGPT are trademarks of OpenAI. Privacy Policy: https://happy.engineering/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

MultiSet4 screens
Happy4 screens

Verdict

The call

The clearest difference is in-app purchases: MultiSet at none against Happy's 1. Happy's advantage is update cadence (weekly vs every 3 weeks) and chart position (#74 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Happy sells 1 in-app purchase, starting at $19.99 per month. MultiSet asks for nothing beyond the download.

UpkeepUpdate frequency

MultiSet ships an update every 3 weeks, Happy weekly. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 8 level
MultiSet versus Happy: the parameters behind the verdict, then further details
ParameterMultiSetHappy
PriceFreeFree
Rating—4.9 (1K ratings) — better
Positive reviews—71.6% of reviews
Number of ratings—1K — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
Best chart rank—#74 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size24 MB98 MB
Age rating4+4+
DeveloperMultiSet AI Inc.Bulka, LLC

In-app purchases

None

MultiSet

No in-app purchases

1 purchases

Happy

Subscriptions1
  • Plus Plus Monthly$19.991 Month

Questions

Is MultiSet free?
MultiSet is free to download, with no in-app purchases.
Is Happy free?
Happy is free to download, with in-app purchases available.
Do MultiSet or Happy have ads?
Neither MultiSet nor Happy shows ads.
Which is updated more often, MultiSet or Happy?
MultiSet ships an update every 3 weeks, and Happy weekly. Most recently, MultiSet was updated on October 12, 2026 and Happy on October 11, 2026.

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