# ProEFI Logger vs Zerobooks

The clearest difference is price: ProEFI Logger at Free against Zerobooks's $19.99. Zerobooks's advantage is rating (3.2 vs 2.0) and review sentiment (25% vs 0%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ProEFI Logger is free to download; Zerobooks costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zerobooks holds the better App Store score, 3.2 against 2.0. That said, the two scores are not equally well evidenced: Zerobooks has 25 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of ProEFI Logger's written reviews are positive against 25% of Zerobooks's.

## The numbers

| Metric | ProEFI Logger | Zerobooks |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/proefi-logger/id1643540729/reviews) | **[3.2 (25 ratings)](https://appshunter.io/ios/app/zerobooks-pro/id6449901775/reviews)** |
| Number of ratings | 1 | **25** |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | **Free** | Paid |
| Size | 62 MB | 56 MB |
| Requires iOS | 12.2 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Teslogic, Inc.](https://appshunter.io/developer/1605403177) | [Rebecca Hustin](https://appshunter.io/developer/1644671209) |

## What reviewers say

### ProEFI Logger

[App page](https://appshunter.io/ios/app/proefi-logger/id1643540729)

This application serves as a CAN logger specifically designed for ProEFI ECUs. It allows users to record and analyze data from their ProEFI engine control units.

**Highlights:** CAN logging, ProEFI ECU compatibility, Data recording, Data analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Zerobooks

[App page](https://appshunter.io/ios/app/zerobooks-pro/id6449901775)

This app serves as a database for LN (Light Novel) entries. It allows users to access and manage information related to light novels.

**Highlights:** LN Database, Information Access, Entry Management, Light Novel Tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is ProEFI Logger free?

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

### Is Zerobooks free?

Zerobooks costs $19.99, with no in-app purchases.

### Which has better reviews, ProEFI Logger or Zerobooks?

Zerobooks is rated higher. ProEFI Logger averages 2.0 out of 5 from 1 ratings, while Zerobooks averages 3.2 from 25 ratings.

### Do ProEFI Logger or Zerobooks have ads?

Neither ProEFI Logger nor Zerobooks shows ads.

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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.*