# Battery Testing Master vs Moment Study by MetricWire

The clearest difference is in-app purchases: Moment Study by MetricWire at none against Battery Testing Master's 1. Moment Study by MetricWire also leads on ads (none vs shown). Battery Testing Master's advantage is update cadence (every 5 days vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Battery Testing Master sells 1 one-off in-app purchase. Moment Study by MetricWire asks for nothing beyond the download.

Battery Testing Master ships an update every 5 days, Moment Study by MetricWire every 3 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Battery Testing Master | Moment Study by MetricWire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (19 ratings)](https://appshunter.io/ios/app/battery-testing-master/id6502358441/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 205 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Ngoc Long](https://appshunter.io/developer/1652022123) | [MetricWire Inc.](https://appshunter.io/developer/815033540) |

## What reviewers say

### Battery Testing Master

[App page](https://appshunter.io/ios/app/battery-testing-master/id6502358441)

This application benchmarks the battery performance of mobile devices. It provides a comprehensive test for battery health, suitable for both new and used batteries on iOS devices.

**Highlights:** Battery benchmarking, Battery health testing, Mobile device optimization, iOS battery analysis

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### Moment Study by MetricWire

[App page](https://appshunter.io/ios/app/moment-study-by-metricwire/id6503917019)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Battery Testing Master free?

Battery Testing Master is free to download, with in-app purchases available.

### Is Moment Study by MetricWire free?

Moment Study by MetricWire is free to download, with no in-app purchases.

### Do Battery Testing Master or Moment Study by MetricWire have ads?

Battery Testing Master shows ads; Moment Study by MetricWire does not.

### Which is updated more often, Battery Testing Master or Moment Study by MetricWire?

Battery Testing Master ships an update every 5 days, and Moment Study by MetricWire every 3 months. Most recently, Battery Testing Master was updated on October 13, 2026 and Moment Study by MetricWire on October 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.*