# Fitenium vs Interval Flow

The clearest difference is monetization model: Fitenium at free with in-app purchases against Interval Flow's subscription. Fitenium also leads on iOS requirement (13.4 vs 18.6). Interval Flow's advantage is review sentiment (48% vs 34%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Fitenium sells 9 in-app purchases, starting at $24.90 per 3 months and Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Fitenium against 4.7 for Interval Flow. Both are backed by a comparable volume of ratings — 120 and 167 respectively. Written reviews are what separate them: 34% of Fitenium's written reviews are positive against 48% of Interval Flow's.

Fitenium ships an update every 9 days, Interval Flow fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Fitenium | Interval Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (120 ratings)](https://appshunter.io/ios/app/fitenium-ai-workout-and-gym-log/id1513206748/reviews) | **[4.7 (167 ratings)](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987/reviews)** |
| Number of ratings | 120 | **167** |
| Positive reviews | 34.4% of reviews | **48.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 49 MB | 20 MB |
| Requires iOS | **13.4** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FITENIUM S.L.](https://appshunter.io/developer/1589216492) | [Bence Kaposzta](https://appshunter.io/developer/1650069302) |

## What reviewers say

### Fitenium

[App page](https://appshunter.io/ios/app/fitenium-ai-workout-and-gym-log/id1513206748)

This app uses AI to create personalized workout plans and track your fitness progress. It offers injury prevention alerts based on your training data and allows you to monitor personal bests, visualize evolution graphs, and track body weight and heart rate.

**Highlights:** AI-generated personalized workouts, Human-certified coach reviewed programs, Workout planning and tracking, Injury risk alerts with digital twin, Personal bests and progress visualization, Body weight and heart rate tracking, Integration with Apple Health/Google Fit

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fitenium PRO | $24.90 | per 3 months |
| Fitenium Pro | $31.99 | per year |
| Fitenium PRO | $31.99 | per year |
| Fitenium PRO | $39.95 | per year |
| Fitenium PRO | $45.90 | per 6 months |
| Fitenium PRO | $49.99 | per year |
| Fitenium PRO | $59.90 | per year |
| Fitenium PRO | $79.90 | per year |
| Fitenium PRO Lifetime | Free | one-time |

**What reviewers like**

- 👍 Great app for fitness goals
- 💡 Innovative and modern app
- 💪 Helps prevent injuries
- 📈 Tracks progress visually
- ✅ User-friendly and helpful

**What reviewers complain about**

- ❌ App no longer working
- ❌ Vendor removed the app
- ❌ Unusable due to bugs
- ❌ Repeated errors during setup
- ❌ Inability to connect with Apple Health

**Reported bugs**

- App removed by vendor
- AI workout plan errors
- Unable to connect to Apple Health
- Changes to workouts are lost
- App stuck at loading screen

**Requested features**

- Add Apple TV version
- Add Apple Watch companion app
- Integrate HealthKit
- Add more workout options
- Allow selection of workout equipment (treadmill, elliptical)


### Interval Flow

[App page](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987)

This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.

**Highlights:** Color-coded intervals, Customizable circuits, Real-time progress tracking, Voice assist and search, Exercise library, Workout sharing

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Month | $4.99 | per 3 months |
| 1 Month | $9.99 | per month |
| 1 Month, 3 day trial | $9.99 | per month |
| Annual | $14.99 | per year |
| 1 Year discounted | $25.95 | per year |
| 1 Year, 3 day trial | $39.99 | per year |
| 1 Year | $39.99 | per year |
| 1 Year Intro month | $39.99 | per year |
| Free Lifetime subscription | Free | one-time |
| Lifetime | $24.99 | one-time |

**What reviewers like**

- 👍 Nicely designed with good features
- 👍 Unique and brilliantly for keeping fit
- 👍 Simplicity gets it done

**What reviewers complain about**

- 🐛 App crashes on launch
- 🐛 App doesn't remember interval settings
- 🐛 App rearranges workout order
- 🐛 Cannot see questionnaire properly
- 🐛 Robot voice with no visual instructions

**Reported bugs**

- Programs deleted after update
- App crashes when adding a program
- Show/Hide Instructions adds time to interval
- App defaults to unused workout
- Cannot permanently skip to end of timed activity

**Requested features**

- Increase repetitions to 20
- Streamline adding intervals
- Make it possible to hide unused workouts
- Add music integration or option
- Provide visual instructions for moves


## Frequently asked questions

### Is Fitenium free?

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

### Is Interval Flow free?

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

### Which has better reviews, Fitenium or Interval Flow?

Interval Flow is rated higher. Fitenium averages 4.7 out of 5 from 120 ratings, while Interval Flow averages 4.7 from 167 ratings.

### Do Fitenium or Interval Flow have ads?

Neither Fitenium nor Interval Flow shows ads.

### Which is updated more often, Fitenium or Interval Flow?

Fitenium ships an update every 9 days, and Interval Flow fortnightly. Most recently, Fitenium was updated on November 3, 2026 and Interval Flow on November 3, 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.*