# KetOne vs Circuit

The clearest difference is update cadence: Circuit at every 2 weeks against KetOne's every 2 months. KetOne'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. KetOne sells 2 in-app purchases, starting at $19.99 per 3 months and Circuit sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

KetOne ships an update every 2 months, Circuit every 2 weeks. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | KetOne | Circuit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/circuit-workout-tracker/id6760281348/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 73 MB | 6 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Oriana Isabel Leal Ramos](https://appshunter.io/developer/1843461781) | [KARIM HANY ELBESHBESHY](https://appshunter.io/developer/1883618927) |

## What reviewers say

### KetOne

[App page](https://appshunter.io/ios/app/ketone-fasting-tracker-easy/id6753320512)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reset Cycle | $19.99 | per 3 months |
| Mastery Cycle | $44.99 | per year |


### Circuit

[App page](https://appshunter.io/ios/app/circuit-workout-tracker/id6760281348)

This app generates personalized strength workouts based on your available time, equipment, and energy levels. Log your sets quickly, track progress, and adapt your routine on the fly. It offers offline functionality and advanced features for subscribers.

**Highlights:** Generate workouts based on time, equipment, and energy, Create ready-to-run strength sessions, Log sets, reps, weights, and rest, Swap exercises dynamically, Track workout history and progress, Offline functionality, Advanced trends and insights (Pro)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circuit Pro Monthly | $4.99 | per month |
| Circuit Pro Annual | $44.99 | per year |


## Frequently asked questions

### Is KetOne free?

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

### Is Circuit free?

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

### Do KetOne or Circuit have ads?

Neither KetOne nor Circuit shows ads.

### Which is updated more often, KetOne or Circuit?

KetOne ships an update every 2 months, and Circuit every 2 weeks. Most recently, KetOne was updated on October 13, 2026 and Circuit 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.*