# Bitcoin Satoshi Calculator vs Don't Forget

The clearest difference is in-app purchases: Bitcoin Satoshi Calculator at none against Don't Forget's 1. Don't Forget's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Don't Forget sells 1 one-off in-app purchase. Bitcoin Satoshi Calculator asks for nothing beyond the download.

Bitcoin Satoshi Calculator ships an update monthly, Don't Forget every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Bitcoin Satoshi Calculator | Don't Forget |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 4 MB | 26 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Scott Galaba](https://appshunter.io/developer/1048868555) | [Francesco Leoni](https://appshunter.io/developer/1484190257) |

## What reviewers say

### Bitcoin Satoshi Calculator

[App page](https://appshunter.io/ios/app/bitcoin-satoshi-calculator/id6740068349)

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

**In-app purchases:** none


### Don't Forget

[App page](https://appshunter.io/ios/app/dont-forget-adhd-task-timer/id6759551127)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Bitcoin Satoshi Calculator free?

Bitcoin Satoshi Calculator is free to download, with no in-app purchases.

### Is Don't Forget free?

Don't Forget is free to download, with in-app purchases available.

### Do Bitcoin Satoshi Calculator or Don't Forget have ads?

Neither Bitcoin Satoshi Calculator nor Don't Forget shows ads.

### Which is updated more often, Bitcoin Satoshi Calculator or Don't Forget?

Bitcoin Satoshi Calculator ships an update monthly, and Don't Forget every 3 weeks. Most recently, Bitcoin Satoshi Calculator was updated on October 24, 2026 and Don't Forget on October 25, 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.*