# FitmentStudio vs OnTrack

The clearest difference is in-app purchases: FitmentStudio at none against OnTrack's 2. OnTrack's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. OnTrack sells 2 in-app purchases, starting at $1.99 per month. FitmentStudio asks for nothing beyond the download.

FitmentStudio ships an update every 4 months, OnTrack every 2 weeks. The most recent releases landed on June 1, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | FitmentStudio | OnTrack |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 10 MB | 8 MB |
| Requires iOS | **16.0** | 17.2 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [Bartosz Wieloch](https://appshunter.io/developer/1644127426) | [OnTrack Apps Limited](https://appshunter.io/developer/1647551624) |

## What reviewers say

### FitmentStudio

[App page](https://appshunter.io/ios/app/fitmentstudio/id1667288116)

This app helps you find the perfect wheel size for your vehicle, including camber adjustments. Browse and upload community-shared fitment details with images, and discover automotive sponsors for your build.

**Highlights:** Fitment calculator with camber adjustment, Community-powered fitment gallery, Upload wheel and car specs, Discover automotive sponsors, View vehicle build images

**Features:** macOS Compatibility

**In-app purchases:** none


### OnTrack

[App page](https://appshunter.io/ios/app/ontrack-shift/id6478929008)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly - Best value | $19.99 | per year |


## Frequently asked questions

### Is FitmentStudio free?

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

### Is OnTrack free?

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

### Do FitmentStudio or OnTrack have ads?

FitmentStudio shows ads; OnTrack does not.

### Which is updated more often, FitmentStudio or OnTrack?

FitmentStudio ships an update every 4 months, and OnTrack every 2 weeks. Most recently, FitmentStudio was updated on June 1, 2026 and OnTrack on September 7, 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.*