# Circuit Clock vs Aika

The clearest difference is in-app purchases: Circuit Clock at none against Aika's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Aika sells 2 in-app purchases, starting at $1.99 per month. Circuit Clock asks for nothing beyond the download.

Circuit Clock ships an update every 10 days, Aika weekly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Circuit Clock | Aika |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Size | 5 MB | 53 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stephen Ludin](https://appshunter.io/developer/699789331) | [Mikko Lehtinen](https://appshunter.io/developer/1896021852) |

## What reviewers say

### Circuit Clock

[App page](https://appshunter.io/ios/app/circuit-clock/id6448733183)

**Features:** macOS Compatibility

**In-app purchases:** none


### Aika

[App page](https://appshunter.io/ios/app/aika-workout-timer/id6765643812)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aika Pro Monthly | $1.99 | per month |
| Aika Pro Yearly | $12.99 | per year |


## Frequently asked questions

### Is Circuit Clock free?

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

### Is Aika free?

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

### Do Circuit Clock or Aika have ads?

Neither Circuit Clock nor Aika shows ads.

### Which is updated more often, Circuit Clock or Aika?

Circuit Clock ships an update every 10 days, and Aika weekly. Most recently, Circuit Clock was updated on October 25, 2026 and Aika on October 31, 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.*