Comparison

Happy vs 6thSense Synapse

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

Head to head
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/

About

6thSense Synapse

Transform your phone into a camera control hub. Instantly discover and connect to cameras on your local network without cables or logins. Manage recordings, monitor live status, and perform diagnostics remotely.

Highlights
  • Auto-discovery of cameras
  • One-tap recording
  • Record All / Stop All functionality
  • Live status monitoring
  • On-device diagnostics
  • Recording playback and export
Features
Read full description

6thSense Synapse is a mobile control plane for egocentric robotics data capture. Connect to compatible capture rigs and cameras on your local network, coordinate multi-camera recording, monitor device and storage status, and review captured sessions from the field. BUILT FOR ROBOTICS DATA OPERATIONS - Discover compatible cameras on your local network - Start and stop recording from one control surface - Monitor recording, connectivity, temperature, and storage status when reported by the device - Browse recorded sessions and open available footage - Manage supported camera and network settings Synapse communicates directly with compatible devices over the local network. Available controls and status details depend on the connected device and its software version. OPTIONAL CONTRIBUTOR WORKSPACE Eligible participants in enabled regional programs can use the contributor workspace for account access, regional agreements, supervised camera registration, contribution status and payment information. Participation depends on the applicable published agreements and program availability. Camera remote controls remain available without a contributor account. Recording, uploaded time, approved time and completed payments are separate stages. An authorized operator imports camera storage cards, QC determines usable footage, and an operator approves payments. OPTIONAL SUPPORT Browse the searchable FAQ or choose AI support chat for troubleshooting and requests to the 6thSense team. Sending a message requires your agreement to share support messages, optional photos, contact details and app/camera context with the AI provider and support team. You choose which photos to attach. Camera controls and the FAQ remain available without sending a support message.

Screenshots

Happy4 screens
6thSense Synapse4 screens

Verdict

The call

The clearest difference is in-app purchases: 6thSense Synapse at none against Happy's 1. 6thSense Synapse also leads on review sentiment (100% vs 72%). Happy's advantage is ratings volume (1K vs 4) and chart position (#86 vs unranked). On price, rating, update cadence and ads 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. 6thSense Synapse asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Happy against 5.0 for 6thSense Synapse. That said, the two scores are not equally well evidenced: Happy has 1K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 72% of Happy's written reviews are positive against 100% of 6thSense Synapse's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 6 level
Happy versus 6thSense Synapse: the parameters behind the verdict, then further details
ParameterHappy6thSense Synapse
PriceFreeFree
Rating4.9 (1K ratings)5.0 (4 ratings) — better
Positive reviews71.6% of reviews100.0% of reviews — better
Number of ratings1K — better4
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#86 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size98 MB54 MB
Age rating4+4+
DeveloperBulka, LLC6thSense AI, Inc.

Customer experience

Happy

All ratings1,024 ratings
Positive96.7%
Neutral1.0%
Negative2.3%
Written reviews67 reviews
Positive71.6%
Neutral10.4%
Negative17.9%

6thSense Synapse

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Happy

Subscriptions1
  • Plus Plus Monthly$19.991 Month
None

6thSense Synapse

No in-app purchases

Questions

Is Happy free?
Happy is free to download, with in-app purchases available.
Is 6thSense Synapse free?
6thSense Synapse is free to download, with no in-app purchases.
Which has better reviews, Happy or 6thSense Synapse?
6thSense Synapse is rated higher. Happy averages 4.9 out of 5 from 1K ratings, while 6thSense Synapse averages 5.0 from 4 ratings.
Do Happy or 6thSense Synapse have ads?
Neither Happy nor 6thSense Synapse shows ads.
Which is updated more often, Happy or 6thSense Synapse?
Happy ships an update weekly, and 6thSense Synapse weekly. Most recently, Happy was updated on October 14, 2026 and 6thSense Synapse on October 15, 2026.

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