# Alpha Arc vs Protagonist

The clearest difference is update cadence: Protagonist at every 5 days against Alpha Arc's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Alpha Arc ships an update every 2 weeks, Protagonist every 5 days. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Alpha Arc | Protagonist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (7 ratings)](https://appshunter.io/ios/app/protagonist-habit-tracker/id6757620832/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | — | Free |
| Size | 62 MB | 57 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [Xhulio Alla](https://appshunter.io/developer/1855943994) | [Protagonist Research, Corp.](https://appshunter.io/developer/1867875647) |

## What reviewers say

### Alpha Arc

[App page](https://appshunter.io/ios/app/alpha-arc/id6755740336)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Protagonist

[App page](https://appshunter.io/ios/app/protagonist-habit-tracker/id6757620832)

This app uses AI and financial accountability to help you achieve your goals. Commit money to your goals, submit proof of habit completion, and earn your money back, potentially with a bonus. Designed with behavioral psychology to foster lasting change.

**Highlights:** AI-guided goal identification, Daily habit tracking with proof submission, Financial commitment and rewards system, Adaptive AI coaching, Behavioral psychology-based design, Progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Alpha Arc free?

Alpha Arc is free to download, with no in-app purchases.

### Is Protagonist free?

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

### Do Alpha Arc or Protagonist have ads?

Neither Alpha Arc nor Protagonist shows ads.

### Which is updated more often, Alpha Arc or Protagonist?

Alpha Arc ships an update every 2 weeks, and Protagonist every 5 days. Most recently, Alpha Arc was updated on October 14, 2026 and Protagonist on October 11, 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.*