# Meterbox Probes vs PMW Expo

The clearest difference is update cadence: PMW Expo at every 4 days against Meterbox Probes's every 3 months. Meterbox Probes's advantage is iOS requirement (15.6 vs 17.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Meterbox Probes ships an update every 3 months, PMW Expo every 4 days. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Meterbox Probes | PMW Expo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 5 MB | 146 MB |
| Requires iOS | **15.6** | 17.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Everbest Machinery Industry Co.,Ltd](https://appshunter.io/developer/564470332) | [UKi Media & Events](https://appshunter.io/developer/1222525440) |

## What reviewers say

### Meterbox Probes

[App page](https://appshunter.io/ios/app/meterbox-probes/id1319208214)

**Features:** macOS Compatibility

**In-app purchases:** none


### PMW Expo

[App page](https://appshunter.io/ios/app/pmw-expo/id6749367203)

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

**In-app purchases:** none


## Frequently asked questions

### Is Meterbox Probes free?

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

### Is PMW Expo free?

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

### Do Meterbox Probes or PMW Expo have ads?

Neither Meterbox Probes nor PMW Expo shows ads.

### Which is updated more often, Meterbox Probes or PMW Expo?

Meterbox Probes ships an update every 3 months, and PMW Expo every 4 days. Most recently, Meterbox Probes was updated on October 12, 2026 and PMW Expo on October 13, 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.*