# Theory 10 vs Root Dictionaries

The clearest difference is price: Theory 10 at Free against Root Dictionaries's $9.99. Root Dictionaries's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Theory 10 is free to download; Root Dictionaries costs $9.99 up front. Theory 10 sells 1 one-off in-app purchase. Root Dictionaries asks for nothing beyond the download.

## The numbers

| Metric | Theory 10 | Root Dictionaries |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.7 (39 ratings)](https://appshunter.io/ios/app/theory-10/id1020710773/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Monetization | Ad-supported | — |
| Size | 72 MB | 29 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Feldman](https://appshunter.io/developer/1020710772) | [Vladimir Musin](https://appshunter.io/developer/1526833378) |

## What reviewers say

### Theory 10

[App page](https://appshunter.io/ios/app/theory-10/id1020710773)

Prepare for your driving theory exam with comprehensive training exercises and access to the official question bank. Track your progress, review errors, and practice in simulated test formats. All features are available for free, even offline.

**Highlights:** Training exercises, Official question bank access, Progress tracking graph, Road sign categorization, Test simulations, Error correction mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Root Dictionaries

[App page](https://appshunter.io/ios/app/root-dictionaries/id6736877442)

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

**In-app purchases:** none


## Frequently asked questions

### Is Theory 10 free?

Theory 10 is free to download, with in-app purchases available.

### Is Root Dictionaries free?

Root Dictionaries costs $9.99, with no in-app purchases.

### Do Theory 10 or Root Dictionaries have ads?

Theory 10 shows ads; Root Dictionaries does not.

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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.*