# whBOOK vs EM3ev Battery Analyst

The clearest difference is iOS requirement: whBOOK at 15.0 against EM3ev Battery Analyst's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

whBOOK ships an update every 5 weeks, EM3ev Battery Analyst every 2 months. The most recent releases landed on October 17, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | whBOOK | EM3ev Battery Analyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/em3ev-battery-analyst/id6504488089/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 7 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [w+h GmbH](https://appshunter.io/developer/1142977449) | [Bjørn-Andreas Lamo](https://appshunter.io/developer/1752480933) |

## What reviewers say

### whBOOK

[App page](https://appshunter.io/ios/app/whbook/id1340317105)

**Features:** macOS Compatibility

**In-app purchases:** none


### EM3ev Battery Analyst

[App page](https://appshunter.io/ios/app/em3ev-battery-analyst/id6504488089)

Monitor your EM3ev battery's performance in real-time. View voltage, current, temperature, and individual cell voltages. Track power consumption over time and access detailed battery status information.

**Highlights:** Bluetooth connectivity, Real-time voltage and current readings, Individual cell voltage monitoring, Temperature monitoring, Power consumption tracking, Battery information and state display

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

**In-app purchases:** none


## Frequently asked questions

### Is whBOOK free?

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

### Is EM3ev Battery Analyst free?

EM3ev Battery Analyst is free to download, with no in-app purchases.

### Do whBOOK or EM3ev Battery Analyst have ads?

Neither whBOOK nor EM3ev Battery Analyst shows ads.

### Which is updated more often, whBOOK or EM3ev Battery Analyst?

whBOOK ships an update every 5 weeks, and EM3ev Battery Analyst every 2 months. Most recently, whBOOK was updated on October 17, 2026 and EM3ev Battery Analyst on October 20, 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.*