# Booker Tools vs Enertec E

The clearest difference is update cadence: Enertec E at every 10 days against Booker Tools's every 3 months. 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.

Booker Tools ships an update every 3 months, Enertec E every 10 days. The most recent releases landed on September 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Booker Tools | Enertec E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 46 MB | 125 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Booker Tools](https://appshunter.io/developer/1350827985) | [Enertec d.o.o](https://appshunter.io/developer/1549496691) |

## What reviewers say

### Booker Tools

[App page](https://appshunter.io/ios/app/booker-tools/id1350827986)

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

**In-app purchases:** none


### Enertec E

[App page](https://appshunter.io/ios/app/enertec-e-charge/id6739290071)

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

**In-app purchases:** none


## Frequently asked questions

### Is Booker Tools free?

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

### Is Enertec E free?

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

### Do Booker Tools or Enertec E have ads?

Neither Booker Tools nor Enertec E shows ads.

### Which is updated more often, Booker Tools or Enertec E?

Booker Tools ships an update every 3 months, and Enertec E every 10 days. Most recently, Booker Tools was updated on September 8, 2026 and Enertec E on September 30, 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.*