# NotWallet Crypto Watch vs ₿21

The clearest difference is device support: NotWallet Crypto Watch at 3 against ₿21's 1. NotWallet Crypto Watch also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

NotWallet Crypto Watch ships an update every 6 days, ₿21 every 8 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | NotWallet Crypto Watch | ₿21 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 8 days |
| Size | 40 MB | 11 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Splitfire AB](https://appshunter.io/developer/1831430993) | [Paxa Media](https://appshunter.io/developer/6775532265) |

## What reviewers say

### NotWallet Crypto Watch

[App page](https://appshunter.io/ios/app/notwallet-crypto-watch/id6749650386)

**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 NotWallet Crypto Watch free?

NotWallet Crypto Watch is free to download, with no in-app purchases.

### Is ₿21 free?

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

### Do NotWallet Crypto Watch or ₿21 have ads?

Neither NotWallet Crypto Watch nor ₿21 shows ads.

### Which is updated more often, NotWallet Crypto Watch or ₿21?

NotWallet Crypto Watch ships an update every 6 days, and ₿21 every 8 days. Most recently, NotWallet Crypto Watch was updated on October 30, 2026 and ₿21 on October 31, 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.*