# Mental Arithmetic Professional vs The Mella App

The clearest difference is update cadence: The Mella App at every 3 months against Mental Arithmetic Professional's every 12 months. The Mella App also leads on iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mental Arithmetic Professional sells 1 one-off in-app purchase and The Mella App sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Mental Arithmetic Professional ships an update every 12 months, The Mella App every 3 months. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Mental Arithmetic Professional | The Mella App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/the-mella-app/id1485806730/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 12 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [The Mella LLC](https://appshunter.io/developer/1485806729) |

## What reviewers say

### Mental Arithmetic Professional

[App page](https://appshunter.io/ios/app/mental-arithmetic-professional/id1477369984)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Turn off advertising | $1.99 | one-time |


### The Mella App

[App page](https://appshunter.io/ios/app/the-mella-app/id1485806730)

This app allows estheticians and cosmetologists to remotely control their Mella devices. Manage multiple devices from your phone, set custom on/off schedules, or manually control them on the fly. Save time and ensure your equipment is ready for clients.

**Highlights:** Remote device control, Custom on/off scheduling, Connect up to 6 devices, Manual on/off toggle, Device naming, WiFi connectivity

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Connect to My Mella - 1 Month | $0.99 | per month |
| Connect to My Mella - 1 Year | $11.49 | per year |


## Frequently asked questions

### Is Mental Arithmetic Professional free?

Mental Arithmetic Professional is free to download, with in-app purchases available.

### Is The Mella App free?

The Mella App is free to download, with in-app purchases available.

### Do Mental Arithmetic Professional or The Mella App have ads?

Neither Mental Arithmetic Professional nor The Mella App shows ads.

### Which is updated more often, Mental Arithmetic Professional or The Mella App?

Mental Arithmetic Professional ships an update every 12 months, and The Mella App every 3 months. Most recently, Mental Arithmetic Professional was updated on October 25, 2026 and The Mella App on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*