# Q9 vs ₿21

The clearest difference is update cadence: ₿21 at every 8 days against Q9's monthly. Q9's advantage is iOS requirement (15.0 vs 17.0). 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.

Q9 ships an update monthly, ₿21 every 8 days. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Q9 | ₿21 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Size | 34 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Q9 Global Trading Limited](https://appshunter.io/developer/1558577067) | [Paxa Media](https://appshunter.io/developer/6775532265) |

## What reviewers say

### Q9

[App page](https://appshunter.io/ios/app/q9/id1558577065)

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

**In-app purchases:** none


### ₿21

[App page](https://appshunter.io/ios/app/21-bitcoin-wallet/id6804453821)

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

**In-app purchases:** none


## Frequently asked questions

### Is Q9 free?

Q9 is free to download, with no in-app purchases.

### Is ₿21 free?

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

### Do Q9 or ₿21 have ads?

Neither Q9 nor ₿21 shows ads.

### Which is updated more often, Q9 or ₿21?

Q9 ships an update monthly, and ₿21 every 8 days. Most recently, Q9 was updated on October 25, 2026 and ₿21 on October 18, 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.*