# ZD 8.4 PRO vs Tracebook

ZD 8.4 PRO and Tracebook are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | ZD 8.4 PRO | Tracebook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 2 MB | 3 MB |
| Requires iOS | **15.5** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Maslim Djanuanto](https://appshunter.io/developer/1521794441) | [Marcus Painter](https://appshunter.io/developer/998530071) |

## What reviewers say

### ZD 8.4 PRO

[App page](https://appshunter.io/ios/app/zd-84-pro-dsd-mkii/id6472196748)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tracebook

[App page](https://appshunter.io/ios/app/tracebook-speaker-reference/id6474818065)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZD 8.4 PRO free?

ZD 8.4 PRO is free to download, with no in-app purchases.

### Is Tracebook free?

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

### Do ZD 8.4 PRO or Tracebook have ads?

Neither ZD 8.4 PRO nor Tracebook 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.*