# ZMAX vs Phone Diagnostics Expert

The clearest difference is in-app purchases: ZMAX at none against Phone Diagnostics Expert's 1. ZMAX also leads on iOS requirement (12.0 vs 15.0). Phone Diagnostics Expert's advantage is update cadence (every 2 weeks vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. Phone Diagnostics Expert sells 1 one-off in-app purchase. ZMAX asks for nothing beyond the download.

ZMAX ships an update every 12 months, Phone Diagnostics Expert every 2 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZMAX | Phone Diagnostics Expert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (17 ratings)](https://appshunter.io/ios/app/phone-diagnostics-expert/id6752949053/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 72 MB | 45 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [日聪 吴](https://appshunter.io/developer/1181237165) | [君 潘](https://appshunter.io/developer/647696765) |

## What reviewers say

### ZMAX

[App page](https://appshunter.io/ios/app/zmax/id6451305336)

**Features:** macOS Compatibility

**In-app purchases:** none


### Phone Diagnostics Expert

[App page](https://appshunter.io/ios/app/phone-diagnostics-expert/id6752949053)

This tool offers a comprehensive diagnostic for your device's hardware and functions. It provides both quick, automatic checks and detailed manual tests for individual components, generating complete reports for troubleshooting or verification.

**Highlights:** One-click automatic hardware detection, Manual verification of individual components, Generation of detailed test result reports, Tests for sensors, connectivity, and hardware, Camera, screen, and system function checks

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $0.99 | one-time |


## Frequently asked questions

### Is ZMAX free?

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

### Is Phone Diagnostics Expert free?

Phone Diagnostics Expert is free to download, with in-app purchases available.

### Do ZMAX or Phone Diagnostics Expert have ads?

Neither ZMAX nor Phone Diagnostics Expert shows ads.

### Which is updated more often, ZMAX or Phone Diagnostics Expert?

ZMAX ships an update every 12 months, and Phone Diagnostics Expert every 2 weeks. Most recently, ZMAX was updated on October 12, 2026 and Phone Diagnostics Expert on October 24, 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.*