# Oneカレンダー vs TimerCal

The clearest difference is ads: Oneカレンダー at none against TimerCal's shown. Oneカレンダー also leads on iOS requirement (16.2 vs 26.0). TimerCal's advantage is update cadence (every 4 days vs every 5 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Oneカレンダー ships an update every 5 weeks, TimerCal every 4 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Oneカレンダー | TimerCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Size | 5 MB | 10 MB |
| Requires iOS | **16.2** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [keigo kozuka](https://appshunter.io/developer/1629004610) | [Takashi Hamanaka](https://appshunter.io/developer/1707678439) |

## What reviewers say

### Oneカレンダー

[App page](https://appshunter.io/ios/app/one/id6476656229)

**In-app purchases:** none


### TimerCal

[App page](https://appshunter.io/ios/app/timercal/id6596728778)

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

**In-app purchases:** none


## Frequently asked questions

### Is Oneカレンダー free?

Oneカレンダー is free to download, with no in-app purchases.

### Is TimerCal free?

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

### Do Oneカレンダー or TimerCal have ads?

TimerCal shows ads; Oneカレンダー does not.

### Which is updated more often, Oneカレンダー or TimerCal?

Oneカレンダー ships an update every 5 weeks, and TimerCal every 4 days. Most recently, Oneカレンダー was updated on October 27, 2026 and TimerCal 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.*