# Binary Clock vs Todo

The clearest difference is in-app purchases: Binary Clock at none against Todo's 1. Binary Clock also leads on ads (none vs shown). Todo's advantage is iOS requirement (15.1 vs 17.2). On price, update cadence and device support there is nothing between them.

Both are free to download. Todo sells 1 one-off in-app purchase. Binary Clock asks for nothing beyond the download.

Binary Clock ships an update every 12 months, Todo every 9 months. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Binary Clock | Todo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 9 months** |
| Size | 0 MB | 53 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sayan Goswami](https://appshunter.io/developer/1724985919) | [TATSUO NAKANO](https://appshunter.io/developer/1846200191) |

## What reviewers say

### Binary Clock

[App page](https://appshunter.io/ios/app/binary-clock-view-time-in-bcd/id6475730187)

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

**In-app purchases:** none


### Todo

[App page](https://appshunter.io/ios/app/todo-with-pomodoro/id6753998457)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads — One-Time Purchase | $2.99 | one-time |


## Frequently asked questions

### Is Binary Clock free?

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

### Is Todo free?

Todo is free to download, with in-app purchases available.

### Do Binary Clock or Todo have ads?

Todo shows ads; Binary Clock does not.

### Which is updated more often, Binary Clock or Todo?

Binary Clock ships an update every 12 months, and Todo every 9 months. Most recently, Binary Clock was updated on October 5, 2026 and Todo on October 7, 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.*