# Just Timer vs スマートタイマーAI

The clearest difference is ads: スマートタイマーAI at none against Just Timer's shown. スマートタイマーAI also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). Just Timer's advantage is update cadence (daily vs every 6 weeks). On price 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.

Just Timer ships an update daily, スマートタイマーAI every 6 weeks. The most recent releases landed on September 28, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Just Timer | スマートタイマーAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 6 weeks |
| Size | 5 MB | 32 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BYNET](https://appshunter.io/developer/1811735131) | [Yuya Fujita](https://appshunter.io/developer/1871516306) |

## What reviewers say

### Just Timer

[App page](https://appshunter.io/ios/app/just-timer-fast/id6756530301)

**Features:** macOS Compatibility

**In-app purchases:** none


### スマートタイマーAI

[App page](https://appshunter.io/ios/app/ai/id6759734813)

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

**In-app purchases:** none


## Frequently asked questions

### Is Just Timer free?

Just Timer is free to download, with no in-app purchases.

### Is スマートタイマーAI free?

スマートタイマーAI is free to download, with no in-app purchases.

### Do Just Timer or スマートタイマーAI have ads?

Just Timer shows ads; スマートタイマーAI does not.

### Which is updated more often, Just Timer or スマートタイマーAI?

Just Timer ships an update daily, and スマートタイマーAI every 6 weeks. Most recently, Just Timer was updated on September 28, 2026 and スマートタイマーAI on September 18, 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.*