# 极简计算器 vs Sunadokei

The clearest difference is in-app purchases: 极简计算器 at none against Sunadokei's 1. 极简计算器 also leads on update cadence (every 2 days vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sunadokei sells 1 one-off in-app purchase. 极简计算器 asks for nothing beyond the download.

极简计算器 ships an update every 2 days, Sunadokei every 5 weeks. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 极简计算器 | Sunadokei |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 5 weeks |
| Size | 16 MB | 12 MB |
| Requires iOS | **16** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [子幸 聂](https://appshunter.io/developer/1881766687) | [atsuko imai](https://appshunter.io/developer/1830783417) |

## What reviewers say

### 极简计算器

[App page](https://appshunter.io/ios/app/id6760827349)

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

**In-app purchases:** none


### Sunadokei

[App page](https://appshunter.io/ios/app/sunadokei-visual-sand-timer/id6762150420)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sunadokei Pro | $2.99 | one-time |


## Frequently asked questions

### Is 极简计算器 free?

极简计算器 is free to download, with no in-app purchases.

### Is Sunadokei free?

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

### Do 极简计算器 or Sunadokei have ads?

Both 极简计算器 and Sunadokei show ads.

### Which is updated more often, 极简计算器 or Sunadokei?

极简计算器 ships an update every 2 days, and Sunadokei every 5 weeks. Most recently, 极简计算器 was updated on October 31, 2026 and Sunadokei on October 28, 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.*