Comparison

Happy vs Ultimate Unit Converter T

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

Ultimate Unit Converter T

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The "Ultimate Unit Converter" app is a powerful and comprehensive tool that allows users to convert different types of units and currencies, as well as perform various calculations, all in one place. This app is designed to be user-friendly, efficient, and highly accurate, making it an ideal choice for anyone who needs to perform unit conversions or calculations on a regular basis. The app includes a wide range of conversion options, such as length, weight, temperature, time, volume, area, speed, and more. Users can easily select the type of unit they want to convert, enter the value they want to convert, and the app will automatically calculate the converted value in the desired unit. The app also includes a history feature, allowing users to keep track of their previous conversions and calculations. In addition to unit conversions, the "Ultimate Unit Converter" app also features a currency converter and a crypto converter. With the currency converter, users can easily convert between different currencies from around the world, and stay up to date with the latest exchange rates. The crypto converter allows users to convert between various cryptocurrencies, including Bitcoin, Ethereum, Litecoin, and more. The "Ultimate Unit Converter" app is designed to be highly customizable, allowing users to choose their preferred units, customize the app interface, and even create their own custom units. Overall, the "Ultimate Unit Converter" app is a must-have tool for anyone who needs to perform unit conversions, calculations, and currency/crypto conversions on a regular basis. • Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy policy: https://www.tecinus.com/p/privacy-policy.html

Screenshots

Happy4 screens
Ultimate Unit Converter T4 screens

Verdict

The call

The clearest difference is in-app purchases: Ultimate Unit Converter T at none against Happy's 1. Ultimate Unit Converter T also leads on iOS requirement (12.0 vs 15.1). Happy's advantage is chart position (#73 vs unranked). On price, ads and device support 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. Ultimate Unit Converter T asks for nothing beyond the download.

Scorecard3 real differences · 8 level
Happy versus Ultimate Unit Converter T: the parameters behind the verdict, then further details
ParameterHappyUltimate Unit Converter T
PriceFreeFree
Rating4.9 (1.1K ratings) — better—
Positive reviews70.6% of reviews—
Number of ratings1.1K — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#73 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size98 MB40 MB
Age rating4+4+
DeveloperBulka, LLCTECINUS TECHNOLOGY AND COMMUNICATIONS JOINT STOCK COMPANY

In-app purchases

1 purchases

Happy

Subscriptions1
  • Plus Plus Monthly$19.991 Month
None

Ultimate Unit Converter T

No in-app purchases

Questions

Is Happy free?
Happy is free to download, with in-app purchases available.
Is Ultimate Unit Converter T free?
Ultimate Unit Converter T is free to download, with no in-app purchases.
Do Happy or Ultimate Unit Converter T have ads?
Neither Happy nor Ultimate Unit Converter T shows ads.

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