# 21 Days vs AfterFolder

The clearest difference is update cadence: AfterFolder at weekly against 21 Days's every 2 months. 21 Days's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

21 Days costs $0.99 and AfterFolder $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

21 Days ships an update every 2 months, AfterFolder weekly. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 21 Days | AfterFolder |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 27 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ahmet celik](https://appshunter.io/developer/1832321636) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### 21 Days

[App page](https://appshunter.io/ios/app/21-days-ai-challenge/id6754599969)

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

**In-app purchases:** none


### AfterFolder

[App page](https://appshunter.io/ios/app/afterfolder/id6771382664)

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

**In-app purchases:** none


## Frequently asked questions

### Is 21 Days free?

21 Days costs $0.99, with no in-app purchases.

### Is AfterFolder free?

AfterFolder costs $0.99, with no in-app purchases.

### Do 21 Days or AfterFolder have ads?

Neither 21 Days nor AfterFolder shows ads.

### Which is updated more often, 21 Days or AfterFolder?

21 Days ships an update every 2 months, and AfterFolder weekly. Most recently, 21 Days was updated on October 25, 2026 and AfterFolder on October 14, 2026.

---

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