# Async.dev vs Happy

The clearest difference is in-app purchases: Async.dev at none against Happy's 1. Happy's advantage is ratings volume (991 vs 2) and chart position (#100 vs unranked). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Async.dev against 4.9 for Happy. That said, the two scores are not equally well evidenced: Happy has 991 ratings behind it against 2, so its average is the more settled of the two.

Async.dev ships an update every 4 days, Happy weekly. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Async.dev | Happy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/asyncdev/id6744751511/reviews)** | [4.9 (991 ratings)](https://appshunter.io/ios/app/happy-codex-and-claude-code-app/id6748571505/reviews) |
| Number of ratings | 2 | **991** |
| Positive reviews | — | 71.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#100** |
| Size | 91 MB | 92 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Mikkel Kim](https://appshunter.io/developer/1720510195) | [Bulka, LLC](https://appshunter.io/developer/1677403762) |

## What reviewers say

### Async.dev

[App page](https://appshunter.io/ios/app/asyncdev/id6744751511)

This app allows developers to interact with their projects using natural language. You can issue tasks, create project plans, and review code through voice commands, streamlining the development workflow.

**Highlights:** Voice-controlled task management, AI-assisted bug fixing, UI tweaking via natural language, Code review functionality, Project planning tools

**In-app purchases:** none


### Happy

[App page](https://appshunter.io/ios/app/happy-codex-and-claude-code-app/id6748571505)

**Currently charting:** #100 Top Free · Developer Tools, #188 Top Grossing · Developer Tools (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Plus Monthly | $19.99 | per month |


## Frequently asked questions

### Is Async.dev free?

Async.dev is free to download, with no in-app purchases.

### Is Happy free?

Happy is free to download, with in-app purchases available.

### Which has better reviews, Async.dev or Happy?

Async.dev is rated higher. Async.dev averages 5.0 out of 5 from 2 ratings, while Happy averages 4.9 from 991 ratings.

### Do Async.dev or Happy have ads?

Neither Async.dev nor Happy shows ads.

### Which is updated more often, Async.dev or Happy?

Async.dev ships an update every 4 days, and Happy weekly. Most recently, Async.dev was updated on September 21, 2026 and Happy on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*