# Simple Circuit Interval Timer vs Interval Timer

The clearest difference is monetization model: Simple Circuit Interval Timer at free with in-app purchases against Interval Timer's subscription. Simple Circuit Interval Timer also leads on review sentiment (100% vs 67%) and update cadence (every 5 days vs every 4 weeks). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Simple Circuit Interval Timer sells 1 one-off in-app purchase and Interval Timer sells 12 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Simple Circuit Interval Timer ships an update every 5 days, Interval Timer every 4 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Simple Circuit Interval Timer | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3.5K ratings)](https://appshunter.io/ios/app/interval-timer/id1610398390/reviews)** |
| Number of ratings | — | **3.5K** |
| Positive reviews | **100.0% of reviews** | 66.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 weeks |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 113 MB | 243 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Shepherd](https://appshunter.io/developer/1479749822) | [HIIT Apps Sp. z o.o.](https://appshunter.io/developer/1713395721) |

## 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 |


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer/id1610398390)

This app is a versatile interval timer designed for various training styles like Tabata and HIIT. It offers customizable workout parameters, voice guidance, and music ducking for an enhanced training experience. Save your custom workouts and track your progress.

**Highlights:** Customizable interval settings, Voice assistant with text-to-speech, Music ducking for audio integration, Save custom workouts, Tabata, Rounds, Stopwatch modes, Apple Health integration

**Features:** Family Sharing, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intervals: monthly membership | $1.99 | per month |
| Intervals: membership | $3.99 | per 3 months |
| Intervals: monthly membership | $4.99 | per month |
| Intervals: yearly membership | $6.99 | per year |
| Intervals: yearly membership | $9.99 | per year |
| Intervals: yearly membership | $19.99 | per year |
| Intervals: yearly membership | $24.99 | per year |
| Intervals: membership | $24.99 | per year |
| Intervals \| PRO version | $14.99 | one-time |
| Intervals \| Membership | $14.99 | one-time |
| Intervals \| Membership | $34.99 | one-time |
| Intervals \| Membership | $39.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Customizable workouts
- 🚀 Versatile and efficient
- 🚀 Helpful voice prompts
- 👍 Seamless music integration

**What reviewers complain about**

- 🐛 Bugs causing lost workouts
- 🔋 High battery consumption
- 💰 Subscription-based model
- 🔒 Forced free trial
- 🐛 Timing issues with intervals

**Reported bugs**

- Workouts disappearing
- App crashes and freezes
- Timing issues with intervals

**Requested features**

- Apple Watch integration
- More customization options
- Additional audio cues and prompts
- Improved workout tracking and history


## Frequently asked questions

### Is Simple Circuit Interval Timer free?

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

### Is Interval Timer free?

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

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

Neither Simple Circuit Interval Timer nor Interval Timer shows ads.

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

Simple Circuit Interval Timer ships an update every 5 days, and Interval Timer every 4 weeks. Most recently, Simple Circuit Interval Timer was updated on October 4, 2026 and Interval Timer on October 17, 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.*