# Trainer vs Project Function

The clearest difference is in-app purchases: Project Function at none against Trainer's 4. Trainer's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Trainer sells 3 in-app purchases, starting at $0.99 per month. Project Function asks for nothing beyond the download.

Trainer ships an update every 2 weeks, Project Function every 6 weeks. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Trainer | Project Function |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Size | 6 MB | 181 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [旭东 刘](https://appshunter.io/developer/1565635060) | [Project Function LLC](https://appshunter.io/developer/1790112444) |

## What reviewers say

### Trainer

[App page](https://appshunter.io/ios/app/trainer-better-step-by-step/id6443737872)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $1.99 | per year |
| Annual | $4.99 | per year |


### Project Function

[App page](https://appshunter.io/ios/app/project-function/id6740467390)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Trainer free?

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

### Is Project Function free?

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

### Do Trainer or Project Function have ads?

Neither Trainer nor Project Function shows ads.

### Which is updated more often, Trainer or Project Function?

Trainer ships an update every 2 weeks, and Project Function every 6 weeks. Most recently, Trainer was updated on October 2, 2026 and Project Function on October 9, 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.*