# Shopper vs 21 Day Challenge

The clearest difference is update cadence: Shopper at monthly against 21 Day Challenge's every 9 months. 21 Day Challenge's advantage is iOS requirement (9.0 vs 13.0). 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.

Shopper ships an update monthly, 21 Day Challenge every 9 months. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Shopper | 21 Day Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Size | 85 MB | 99 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Punpromotion Co., Ltd](https://appshunter.io/developer/1481304948) | [Phanupong Sanmee](https://appshunter.io/developer/1435296424) |

## What reviewers say

### Shopper

[App page](https://appshunter.io/ios/app/shopper/id1492780018)

**In-app purchases:** none


### 21 Day Challenge

[App page](https://appshunter.io/ios/app/21-day-challenge/id1504278610)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shopper free?

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

### Is 21 Day Challenge free?

21 Day Challenge is free to download, with no in-app purchases.

### Do Shopper or 21 Day Challenge have ads?

Neither Shopper nor 21 Day Challenge shows ads.

### Which is updated more often, Shopper or 21 Day Challenge?

Shopper ships an update monthly, and 21 Day Challenge every 9 months. Most recently, Shopper was updated on October 25, 2026 and 21 Day Challenge on October 27, 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.*