# NONSTOP CARDS vs Rechenflow Mental Math

The clearest difference is update cadence: Rechenflow Mental Math at every 4 days against NONSTOP CARDS's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

NONSTOP CARDS ships an update every 3 months, Rechenflow Mental Math every 4 days. Both last shipped on October 6, 2026.

## The numbers

| Metric | NONSTOP CARDS | Rechenflow Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 89 MB | 63 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [WE ARE L&P UG (haftungsbeschränkt)](https://appshunter.io/developer/1820233860) | [Christian Hermann](https://appshunter.io/developer/1882361365) |

## What reviewers say

### NONSTOP CARDS

[App page](https://appshunter.io/ios/app/nonstop-cards/id6747201039)

This app-powered word game uses letter cards to challenge players to find words that fit given topics and start with specific letters. It offers multiple topic categories and game modes for engaging fun with friends and family.

**Highlights:** App-guided gameplay, Letter card challenges, Multiple topic categories, Two distinct game modes, Offline play after initial unlock, Regular content updates

**Features:** Vision Pro support

**In-app purchases:** none


### Rechenflow Mental Math

[App page](https://appshunter.io/ios/app/rechenflow-mental-math/id6776089329)

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

**In-app purchases:** none


## Frequently asked questions

### Is NONSTOP CARDS free?

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

### Is Rechenflow Mental Math free?

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

### Do NONSTOP CARDS or Rechenflow Mental Math have ads?

Neither NONSTOP CARDS nor Rechenflow Mental Math shows ads.

### Which is updated more often, NONSTOP CARDS or Rechenflow Mental Math?

NONSTOP CARDS ships an update every 3 months, and Rechenflow Mental Math every 4 days. Most recently, NONSTOP CARDS was updated on October 6, 2026 and Rechenflow Mental Math on October 6, 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.*