# Z2/4×4 Trainer vs Buddies

The clearest difference is in-app purchases: Buddies at none against Z2/4×4 Trainer's 1. Buddies also leads on update cadence (every 8 days vs every 3 weeks) and iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Z2/4×4 Trainer sells 1 one-off in-app purchase. Buddies asks for nothing beyond the download.

Z2/4×4 Trainer ships an update every 3 weeks, Buddies every 8 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Z2/4×4 Trainer | Buddies |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Size | 5 MB | 43 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chenfei Chu](https://appshunter.io/developer/6776864992) | [Soft Signals Lab](https://appshunter.io/developer/6817191071) |

## What reviewers say

### Z2/4×4 Trainer

[App page](https://appshunter.io/ios/app/z244-trainer/id6776864990)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Z2/4×4 Pro (Lifetime) | $14.99 | one-time |


### Buddies

[App page](https://appshunter.io/ios/app/buddies-daily-routine-tracker/id6817931833)

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

**In-app purchases:** none


## Frequently asked questions

### Is Z2/4×4 Trainer free?

Z2/4×4 Trainer is free to download, with in-app purchases available.

### Is Buddies free?

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

### Do Z2/4×4 Trainer or Buddies have ads?

Neither Z2/4×4 Trainer nor Buddies shows ads.

### Which is updated more often, Z2/4×4 Trainer or Buddies?

Z2/4×4 Trainer ships an update every 3 weeks, and Buddies every 8 days. Most recently, Z2/4×4 Trainer was updated on November 10, 2026 and Buddies on November 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.*