# Subintervals vs Bike Fast Fit Pro

Subintervals and Bike Fast Fit Pro both sit at 5.0 stars, but that hides the real split: 100% of Subintervals's written reviews are positive against 71% of Bike Fast Fit Pro's. Bike Fast Fit Pro's advantage is ratings volume (20 vs 2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Subintervals sells 4 one-off in-app purchases and Bike Fast Fit Pro sells 1 in-app purchase, starting at $99.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Subintervals against 5.0 for Bike Fast Fit Pro. That said, the two scores are not equally well evidenced: Bike Fast Fit Pro has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Subintervals's written reviews are positive against 71% of Bike Fast Fit Pro's.

Subintervals ships an update weekly, Bike Fast Fit Pro every 10 days. Both last shipped on November 4, 2026.

## The numbers

| Metric | Subintervals | Bike Fast Fit Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/subintervals/id6479748688/reviews) | [5.0 (20 ratings)](https://appshunter.io/ios/app/bike-fast-fit-pro/id6502648219/reviews) |
| Number of ratings | 2 | **20** |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 109 MB | 276 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Inaki Arroyo Nebreda](https://appshunter.io/developer/1736987639) | [Double Dog Studios](https://appshunter.io/developer/307418452) |

## What reviewers say

### Subintervals

[App page](https://appshunter.io/ios/app/subintervals/id6479748688)

Visualize your training data with detailed displays and interactive graphs. Customize your analysis and sync seamlessly with intervals.icu for up-to-the-minute insights into activities, events, and performance metrics.

**Highlights:** Detailed activity and event visualization, Interactive performance graphs, Seamless intervals.icu sync, Customizable data analysis, Actionable training insights

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $3.99 | one-time |
| Lunch | $11.99 | one-time |
| Big Thanks | $17.99 | one-time |
| Sponsor | $44.99 | one-time |


### Bike Fast Fit Pro

[App page](https://appshunter.io/ios/app/bike-fast-fit-pro/id6502648219)

This app provides professional bike fitting tools for cyclists and shops. It offers advanced features for precise fits, including rider and bike data management, automatic video capture, and AI-driven adjustment recommendations. Generate custom reports to showcase improvements and manage your business flow.

**Highlights:** Rider and bike data management, Automatic video capture, Markerless tracking analysis, AI-generated adjustment recommendations, Customizable PDF and video reports, Real-time analysis, iCloud synchronization

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $99.99 | per year |


## Frequently asked questions

### Is Subintervals free?

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

### Is Bike Fast Fit Pro free?

Bike Fast Fit Pro is free to download, with in-app purchases available.

### Which has better reviews, Subintervals or Bike Fast Fit Pro?

Subintervals and Bike Fast Fit Pro are both rated 5.0 out of 5 on the App Store, from 2 and 20 ratings respectively.

### Do Subintervals or Bike Fast Fit Pro have ads?

Neither Subintervals nor Bike Fast Fit Pro shows ads.

### Which is updated more often, Subintervals or Bike Fast Fit Pro?

Subintervals ships an update weekly, and Bike Fast Fit Pro every 10 days. Most recently, Subintervals was updated on November 4, 2026 and Bike Fast Fit Pro on November 4, 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.*