# CirclesFit vs Interval Timer

The clearest difference is in-app purchases: CirclesFit at none against Interval Timer's 2. Interval Timer's advantage is update cadence (every 2 days vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CirclesFit ships an update every 7 months, Interval Timer every 2 days. The most recent releases landed on October 27, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CirclesFit | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 days** |
| Size | 2 MB | 55 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Velocidev GmbH](https://appshunter.io/developer/1130418588) | [Pratik Khomane](https://appshunter.io/developer/1816242428) |

## What reviewers say

### CirclesFit

[App page](https://appshunter.io/ios/app/circlesfit/id1638587050)

**In-app purchases:** none


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-timer/id6761050245)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO ACCESS | $1.99 | per month |
| Lifetime Access | $12.99 | one-time |


## Frequently asked questions

### Is CirclesFit free?

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

### Is Interval Timer free?

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

### Do CirclesFit or Interval Timer have ads?

Neither CirclesFit nor Interval Timer shows ads.

### Which is updated more often, CirclesFit or Interval Timer?

CirclesFit ships an update every 7 months, and Interval Timer every 2 days. Most recently, CirclesFit was updated on October 27, 2026 and Interval Timer on October 8, 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.*