# zWatch vs Ironbook

The clearest difference is in-app purchases: zWatch at none against Ironbook's 10. zWatch also leads on iOS requirement (9.0 vs 17.0). Ironbook's advantage is update cadence (every 5 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Ironbook sells 10 in-app purchases, starting at $2.99 per month. zWatch asks for nothing beyond the download.

zWatch ships an update every 2 months, Ironbook every 5 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | zWatch | Ironbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/zwatch/id1509879901/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 113 MB | 3 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zadez Vietnam Company Limited](https://appshunter.io/developer/1259057705) | [Matthew Busel](https://appshunter.io/developer/6810582483) |

## What reviewers say

### zWatch

[App page](https://appshunter.io/ios/app/zwatch/id1509879901)

This app tracks your daily activity, sleep patterns, and exercise, providing insights to encourage a healthy lifestyle. It requires a ZADEZ Smart Watch to function and offers customization options for your device.

**Highlights:** Accurate motion recording, Detailed sleeping analysis, Exercise tracking, Set notifications, Customize watch faces, Alarm settings, Apple Health integration

**In-app purchases:** none


### Ironbook

[App page](https://appshunter.io/ios/app/ironbook-workout-log/id6814264434)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ironbook Plus Monthly | $2.99 | per month |
| Ironbook Plus Yearly | $14.99 | per year |
| PR Posters x3 | $0.99 | one-time |
| Cobalt Tape | $0.99 | one-time |
| Week Shield | $0.99 | one-time |
| Volt Tape | $0.99 | one-time |
| Rose Tape | $0.99 | one-time |
| Bone Tape | $0.99 | one-time |
| PR Fireworks | $0.99 | one-time |
| Shield Pack x3 | $1.99 | one-time |


## Frequently asked questions

### Is zWatch free?

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

### Is Ironbook free?

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

### Do zWatch or Ironbook have ads?

Neither zWatch nor Ironbook shows ads.

### Which is updated more often, zWatch or Ironbook?

zWatch ships an update every 2 months, and Ironbook every 5 days. Most recently, zWatch was updated on November 3, 2026 and Ironbook 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.*