# Challenge Tracker vs 2DOs

The clearest difference is iOS requirement: Challenge Tracker at 15.0 against 2DOs's 17.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Challenge Tracker sells 3 in-app purchases, starting at $9.99 per month and 2DOs sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Challenge Tracker ships an update monthly, 2DOs every 3 weeks. The most recent releases landed on September 15, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Challenge Tracker | 2DOs |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 4 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nikita Shestak](https://appshunter.io/developer/1023359447) | [BITART](https://appshunter.io/developer/1747324278) |

## What reviewers say

### Challenge Tracker

[App page](https://appshunter.io/ios/app/challenge-tracker-askesis/id6755964020)

This app helps you build lasting habits through short, focused commitment cycles of 7-90 days. It emphasizes clear beginnings and endings to foster permanent change without the pressure of endless streaks or guilt from missed days.

**Highlights:** Short commitment cycles (7-90 days), Focus on lasting change, No endless streaks or guilt, Track progress visually, Simple system for good/bad habits

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $39.99 | per year |
| 3-day trial | $39.99 | per year |


### 2DOs

[App page](https://appshunter.io/ios/app/2dos/id6757322749)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |
| Yearly Premium | $7.99 | per year |


## Frequently asked questions

### Is Challenge Tracker free?

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

### Is 2DOs free?

2DOs is free to download, with in-app purchases available.

### Do Challenge Tracker or 2DOs have ads?

Neither Challenge Tracker nor 2DOs shows ads.

### Which is updated more often, Challenge Tracker or 2DOs?

Challenge Tracker ships an update monthly, and 2DOs every 3 weeks. Most recently, Challenge Tracker was updated on September 15, 2026 and 2DOs on September 12, 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.*