# Circuit vs Tread Timer

The clearest difference is price: Tread Timer at Free against Circuit's $2.99. Tread Timer also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Circuit's advantage is ads (none vs shown) and update cadence (every 9 days vs monthly). On rating, ratings volume and in-app purchases there is nothing between them.

Tread Timer is free to download; Circuit costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Circuit against 5.0 for Tread Timer. Both are backed by a comparable volume of ratings — 6 and 3 respectively.

Circuit ships an update every 9 days, Tread Timer monthly. The most recent releases landed on September 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Circuit | Tread Timer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/circuit-hiit-timer/id1636796128/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/tread-timer/id6757133582/reviews) |
| Number of ratings | **6** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Paid | **Ad-supported** |
| Size | 4 MB | 40 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arjun Mahanti](https://appshunter.io/developer/1028057606) | [Benchmark Fitness, Inc.](https://appshunter.io/developer/1173217730) |

## What reviewers say

### Circuit

[App page](https://appshunter.io/ios/app/circuit-hiit-timer/id1636796128)

This interval timer app simplifies workout tracking with customizable circuits and large, easy-to-read timers. Save favorite routines for quick access and personalize the app's appearance and sounds to enhance your training experience.

**Highlights:** Save and repeat favorite circuits, Large, glanceable timers, Customizable appearance, Custom sound alerts, Simple and beautiful interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Tread Timer

[App page](https://appshunter.io/ios/app/tread-timer/id6757133582)

This app provides treadmill workout timers to help users structure their exercise sessions. It offers customizable intervals for running, walking, and resting, ensuring a consistent and effective workout experience.

**Highlights:** Treadmill workout timers, Customizable intervals, Running and walking segments, Rest periods, Structured exercise sessions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Circuit free?

Circuit costs $2.99, with no in-app purchases.

### Is Tread Timer free?

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

### Which has better reviews, Circuit or Tread Timer?

Circuit and Tread Timer are both rated 5.0 out of 5 on the App Store, from 6 and 3 ratings respectively.

### Do Circuit or Tread Timer have ads?

Tread Timer shows ads; Circuit does not.

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

Circuit ships an update every 9 days, and Tread Timer monthly. Most recently, Circuit was updated on September 25, 2026 and Tread Timer on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*