# IntervalForge vs Circuit Timer

The clearest difference is update cadence: IntervalForge at every 2 weeks against Circuit Timer's monthly. Circuit Timer's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. IntervalForge sells 1 one-off in-app purchase and Circuit Timer sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

IntervalForge ships an update every 2 weeks, Circuit Timer monthly. The most recent releases landed on September 10, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | IntervalForge | Circuit Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 1 MB | 7 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Shuto Nishiyama](https://appshunter.io/developer/1879174354) | [Lawman Services, LLC](https://appshunter.io/developer/446643752) |

## What reviewers say

### IntervalForge

[App page](https://appshunter.io/ios/app/intervalforge-interval-timer/id6759606731)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IntervalForge Pro | $2.99 | one-time |


### Circuit Timer

[App page](https://appshunter.io/ios/app/circuit-timer/id6759834943)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Core | $2.99 | one-time |
| Pro | $4.99 | one-time |


## Frequently asked questions

### Is IntervalForge free?

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

### Is Circuit Timer free?

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

### Do IntervalForge or Circuit Timer have ads?

Neither IntervalForge nor Circuit Timer shows ads.

### Which is updated more often, IntervalForge or Circuit Timer?

IntervalForge ships an update every 2 weeks, and Circuit Timer monthly. Most recently, IntervalForge was updated on September 10, 2026 and Circuit Timer on September 3, 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.*