# Circuit Train vs Ntrval Timer

The clearest difference is update cadence: Ntrval Timer at every 3 weeks against Circuit Train's every 5 months. Circuit Train's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Circuit Train ships an update every 5 months, Ntrval Timer every 3 weeks. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Circuit Train | Ntrval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/circuit-train/id410752915/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 16 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sean Samocki](https://appshunter.io/developer/403382515) | [Blake Garcia](https://appshunter.io/developer/6782465594) |

## What reviewers say

### Circuit Train

[App page](https://appshunter.io/ios/app/circuit-train/id410752915)

This app helps you manage circuit training workouts by timing exercises and rest periods. It allows full customization of workout structure and integrates with your music library to keep you motivated.

**Highlights:** Customizable station and circuit lengths, Automated alerts for exercise and rest periods, Music playlist integration, Focus on workout quality over timing, Supports various circuit training types

**Features:** macOS Compatibility

**In-app purchases:** none


### Ntrval Timer

[App page](https://appshunter.io/ios/app/ntrval-timer/id6782465592)

**In-app purchases:** none


## Frequently asked questions

### Is Circuit Train free?

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

### Is Ntrval Timer free?

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

### Do Circuit Train or Ntrval Timer have ads?

Neither Circuit Train nor Ntrval Timer shows ads.

### Which is updated more often, Circuit Train or Ntrval Timer?

Circuit Train ships an update every 5 months, and Ntrval Timer every 3 weeks. Most recently, Circuit Train was updated on October 6, 2026 and Ntrval Timer on October 5, 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.*