# Arch Calendar vs TsukiUsagi Timer

The clearest difference is in-app purchases: TsukiUsagi Timer at none against Arch Calendar's 2. Arch Calendar's advantage is iOS requirement (16.4 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Arch Calendar sells 2 in-app purchases, starting at $6.00 per month. TsukiUsagi Timer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on November 9, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Arch Calendar | TsukiUsagi Timer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | Every 9 days |
| Monetization | Freemium | — |
| Size | 126 MB | 15 MB |
| Requires iOS | **16.4** | 18.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MOBA Incorporated](https://appshunter.io/developer/1823577996) | [Kazumi Matsumoto](https://appshunter.io/developer/1845542621) |

## What reviewers say

### Arch Calendar

[App page](https://appshunter.io/ios/app/arch-calendar-time-blocking/id6753331558)

This minimal calendar app unifies tasks and scheduling into a single interface. Capture ideas instantly and drag them onto time blocks to organize your day. It focuses on essential functionality to help you stay focused and productive.

**Highlights:** Quick task and idea capture, Drag-and-drop time blocking, Organize work by categories, Streamlined interface, Minimalist design

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $6.00 | per month |
| Yearly Plan | $48.00 | per year |


### TsukiUsagi Timer

[App page](https://appshunter.io/ios/app/tsukiusagi-timer/id6753893693)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arch Calendar free?

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

### Is TsukiUsagi Timer free?

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

### Do Arch Calendar or TsukiUsagi Timer have ads?

Neither Arch Calendar nor TsukiUsagi Timer shows ads.

### Which is updated more often, Arch Calendar or TsukiUsagi Timer?

Arch Calendar ships an update every 9 days, and TsukiUsagi Timer every 9 days. Most recently, Arch Calendar was updated on November 9, 2026 and TsukiUsagi Timer on October 30, 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.*