# Calculator with 11 button vs Countdown App

The clearest difference is in-app purchases: Calculator with 11 button at none against Countdown App's 1. Countdown App's advantage is ads (none vs shown) and iOS requirement (18.0 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Countdown App sells 1 one-off in-app purchase. Calculator with 11 button asks for nothing beyond the download.

Calculator with 11 button ships an update every 2 months, Countdown App monthly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calculator with 11 button | Countdown App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Size | 42 MB | 3 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Robert Maeda](https://appshunter.io/developer/1874220889) |

## What reviewers say

### Calculator with 11 button

[App page](https://appshunter.io/ios/app/calculator-with-11-button/id6754865529)

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

**In-app purchases:** none


### Countdown App

[App page](https://appshunter.io/ios/app/countdown-app-widgets/id6761038505)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Countdown Premium | $3.99 | one-time |


## Frequently asked questions

### Is Calculator with 11 button free?

Calculator with 11 button is free to download, with no in-app purchases.

### Is Countdown App free?

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

### Do Calculator with 11 button or Countdown App have ads?

Calculator with 11 button shows ads; Countdown App does not.

### Which is updated more often, Calculator with 11 button or Countdown App?

Calculator with 11 button ships an update every 2 months, and Countdown App monthly. Most recently, Calculator with 11 button was updated on October 28, 2026 and Countdown App 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.*