# 45CLOCK vs TetraClock

The clearest difference is ads: 45CLOCK at none against TetraClock's shown. 45CLOCK also leads on iOS requirement (8.0 vs 14.0). TetraClock's advantage is update cadence (every 2 days vs every 16 months). 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.

45CLOCK ships an update every 16 months, TetraClock every 2 days. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 45CLOCK | TetraClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/45clock/id909198242/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 6 MB | 6 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tomohiro Yamashita](https://appshunter.io/developer/658724298) | [Legal Prompt Inc.](https://appshunter.io/developer/1490746932) |

## What reviewers say

### 45CLOCK

[App page](https://appshunter.io/ios/app/45clock/id909198242)

This utility app reimagines timekeeping by setting an hour to 45 minutes. The clock's long hand completes a full cycle in 45 minutes, offering a unique perspective on daily hours.

**Highlights:** 45-minute hour concept, Unique clock face, Alternative time perception, Simple utility tool

**Features:** macOS Compatibility

**In-app purchases:** none


### TetraClock

[App page](https://appshunter.io/ios/app/tetraclock-falling-block/id6504890211)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 45CLOCK free?

45CLOCK is free to download, with no in-app purchases.

### Is TetraClock free?

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

### Do 45CLOCK or TetraClock have ads?

TetraClock shows ads; 45CLOCK does not.

### Which is updated more often, 45CLOCK or TetraClock?

45CLOCK ships an update every 16 months, and TetraClock every 2 days. Most recently, 45CLOCK was updated on October 8, 2026 and TetraClock on October 5, 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.*