# TRAINER WATCH vs Race Trajectory

The clearest difference is in-app purchases: TRAINER WATCH at none against Race Trajectory's 1. TRAINER WATCH also leads on iOS requirement (14.2 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Race Trajectory sells 1 in-app purchase, starting at $1.99 per month. TRAINER WATCH asks for nothing beyond the download.

TRAINER WATCH ships an update every 2 weeks, Race Trajectory monthly. The most recent releases landed on September 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | TRAINER WATCH | Race Trajectory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 16 MB | 20 MB |
| Requires iOS | **14.2** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kohei Karita](https://appshunter.io/developer/1576492807) | [Tsuyoshi Matsuoka](https://appshunter.io/developer/1697141668) |

## What reviewers say

### TRAINER WATCH

[App page](https://appshunter.io/ios/app/trainer-watch/id1576980886)

**Features:** macOS Compatibility

**In-app purchases:** none


### Race Trajectory

[App page](https://appshunter.io/ios/app/race-trajectory/id6747305681)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is TRAINER WATCH free?

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

### Is Race Trajectory free?

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

### Do TRAINER WATCH or Race Trajectory have ads?

Both TRAINER WATCH and Race Trajectory show ads.

### Which is updated more often, TRAINER WATCH or Race Trajectory?

TRAINER WATCH ships an update every 2 weeks, and Race Trajectory monthly. Most recently, TRAINER WATCH was updated on September 29, 2026 and Race Trajectory on October 21, 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.*