# OnTrack vs Aim2Build

The clearest difference is in-app purchases: Aim2Build at none against OnTrack's 2. Aim2Build also leads on iOS requirement (15.1 vs 17.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OnTrack sells 2 in-app purchases, starting at $1.99 per month. Aim2Build asks for nothing beyond the download.

OnTrack ships an update every 2 weeks, Aim2Build every 3 weeks. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OnTrack | Aim2Build |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 8 MB | 34 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [OnTrack Apps Limited](https://appshunter.io/developer/1647551624) | [AIM2 LTD](https://appshunter.io/developer/1870903524) |

## What reviewers say

### 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 |


### Aim2Build

[App page](https://appshunter.io/ios/app/aim2build-brick-inventory/id6758105792)

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

**In-app purchases:** none


## Frequently asked questions

### Is OnTrack free?

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

### Is Aim2Build free?

Aim2Build is free to download, with no in-app purchases.

### Do OnTrack or Aim2Build have ads?

Neither OnTrack nor Aim2Build shows ads.

### Which is updated more often, OnTrack or Aim2Build?

OnTrack ships an update every 2 weeks, and Aim2Build every 3 weeks. Most recently, OnTrack was updated on September 7, 2026 and Aim2Build on September 10, 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.*