# Elevator Repair Guide vs Mental Math

The clearest difference is in-app purchases: Mental Math at none against Elevator Repair Guide's 2. Mental Math also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Elevator Repair Guide sells 2 in-app purchases, starting at $5.99 per month. Mental Math asks for nothing beyond the download.

## The numbers

| Metric | Elevator Repair Guide | Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 8.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Daily | — |
| Monetization | Freemium | — |
| Size | 20 MB | 25 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dong Chul Kim](https://appshunter.io/developer/1555401209) | [Johannes Lauber](https://appshunter.io/developer/1483223615) |

## What reviewers say

### Elevator Repair Guide

[App page](https://appshunter.io/ios/app/elevator-repair-guide/id1555401207)

Access a comprehensive library of elevator repair information, including videos and error code lookups. This app helps streamline repair times with readily available resources. Some content requires a subscription for full access.

**Highlights:** Video tutorials, Error code search, Safety line search, Repair guide forum, Inspection videos

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access Package | $5.99 | per month |
| Monthly | $5.99 | per month |


### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-learn-math/id6809820085)

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

**In-app purchases:** none


## Frequently asked questions

### Is Elevator Repair Guide free?

Elevator Repair Guide is free to download, with in-app purchases available.

### Is Mental Math free?

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

### Do Elevator Repair Guide or Mental Math have ads?

Neither Elevator Repair Guide nor Mental Math 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.*