# AR Lopte vs Mental Chronometry

The clearest difference is price: AR Lopte at Free against Mental Chronometry's $0.99. AR Lopte also leads on update cadence (every 18 months vs every 42 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

AR Lopte is free to download; Mental Chronometry costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AR Lopte ships an update every 18 months, Mental Chronometry every 42 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | AR Lopte | Mental Chronometry |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 18 months** | Every 42 months |
| Size | 427 MB | 201 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nenad Milojkovic](https://appshunter.io/developer/662074693) | [Paul Cohen](https://appshunter.io/developer/908777603) |

## What reviewers say

### AR Lopte

[App page](https://appshunter.io/ios/app/ar-lopte/id1551557559)

**In-app purchases:** none


### Mental Chronometry

[App page](https://appshunter.io/ios/app/mental-chronometry/id1574095844)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AR Lopte free?

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

### Is Mental Chronometry free?

Mental Chronometry costs $0.99, with no in-app purchases.

### Do AR Lopte or Mental Chronometry have ads?

Neither AR Lopte nor Mental Chronometry shows ads.

### Which is updated more often, AR Lopte or Mental Chronometry?

AR Lopte ships an update every 18 months, and Mental Chronometry every 42 months. Most recently, AR Lopte was updated on November 7, 2026 and Mental Chronometry on November 7, 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.*