# Simple Circuit Interval Timer vs Power Interval Timer

The clearest difference is ads: Simple Circuit Interval Timer at none against Power Interval Timer's shown. Simple Circuit Interval Timer also leads on iOS requirement (10.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Simple Circuit Interval Timer ships an update every 5 days, Power Interval Timer weekly. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Simple Circuit Interval Timer | Power Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 113 MB | 37 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Shepherd](https://appshunter.io/developer/1479749822) | [Lior Zukman](https://appshunter.io/developer/1845410217) |

## What reviewers say

### Simple Circuit Interval Timer

[App page](https://appshunter.io/ios/app/simple-circuit-interval-timer/id1505323062)

This app provides customizable interval timers for HIIT, circuit training, and yoga. It also features a daily plank challenge to build core strength at home without equipment. Enjoy stunning visuals and offline workout capabilities.

**Highlights:** Customizable interval timers, HIIT, circuit, and Tabata support, Daily plank challenge, Offline workout capability, Customizable themes and layouts, REP meter for pace tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple Circuit Trainer: Pro | $1.99 | one-time |


### Power Interval Timer

[App page](https://appshunter.io/ios/app/power-interval-timer/id6758246007)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $2.99 | one-time |


## Frequently asked questions

### Is Simple Circuit Interval Timer free?

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

### Is Power Interval Timer free?

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

### Do Simple Circuit Interval Timer or Power Interval Timer have ads?

Power Interval Timer shows ads; Simple Circuit Interval Timer does not.

### Which is updated more often, Simple Circuit Interval Timer or Power Interval Timer?

Simple Circuit Interval Timer ships an update every 5 days, and Power Interval Timer weekly. Most recently, Simple Circuit Interval Timer was updated on October 19, 2026 and Power Interval Timer on October 15, 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.*