# Mental Math (Lite) vs Eureka! Kreuzworträtsel

The clearest difference is ads: Mental Math (Lite) at none against Eureka! Kreuzworträtsel's shown. Mental Math (Lite) also leads on ratings volume (52 vs 2). Eureka! Kreuzworträtsel's advantage is update cadence (every 2 months vs every 16 months) and review sentiment (100% vs 73%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Mental Math (Lite) sells 1 one-off in-app purchase and Eureka! Kreuzworträtsel sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Eureka! Kreuzworträtsel holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Mental Math (Lite) has 52 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of Mental Math (Lite)'s written reviews are positive against 100% of Eureka! Kreuzworträtsel's.

Mental Math (Lite) ships an update every 16 months, Eureka! Kreuzworträtsel every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Mental Math (Lite) | Eureka! Kreuzworträtsel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (52 ratings)](https://appshunter.io/ios/app/mental-math-lite/id758358888/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/eureka-kreuzwortratsel/id1469678562/reviews)** |
| Number of ratings | **52** | 2 |
| Positive reviews | 73.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 49 MB |
| Requires iOS | 10.3 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Trilliarden Entertainment GmbH](https://appshunter.io/developer/1121555076) | [Christopher Hahn](https://appshunter.io/developer/1469678561) |

## What reviewers say

### Mental Math (Lite)

[App page](https://appshunter.io/ios/app/mental-math-lite/id758358888)

Playfully improve your mental calculation skills with various exercises and image puzzles. Developed with mathematics teachers, this app offers multiple difficulty levels and categories to boost your brain power.

**Highlights:** Mental calculation exercises, Image puzzles for motivation, Basic Arithmetics, Division with Remainder, Percentage Calculation, Roman Numerals, Multiples and Divisors, 4 Difficulty Levels

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


### Eureka! Kreuzworträtsel

[App page](https://appshunter.io/ios/app/eureka-kreuzwortratsel/id1469678562)

This app generates endless crossword puzzles with over 10,000 questions. Customize puzzle size, difficulty, and categories to your liking. Features include helpful tools and the ability to share solved puzzles with friends.

**Highlights:** Automatic crossword generation, Over 10,000 questions, Customizable difficulty and categories, Helpful solving tools, Share solved puzzles

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zusatzpaket - Allgemein | $1.99 | one-time |
| Zusatzpaket - Allgemein 2 | $1.99 | one-time |
| Zusatzpaket - Englisch | $1.99 | one-time |
| Zusatzpaket - Film und TV | $1.99 | one-time |
| Zusatzpaket - Allgemein 3 | $1.99 | one-time |
| Zusatzpaket - Musikcharts DE | $1.99 | one-time |
| Zusatzpaket - Geografie DACH | $1.99 | one-time |
| Paketbundle | $5.99 | one-time |


## Frequently asked questions

### Is Mental Math (Lite) free?

Mental Math (Lite) is free to download, with in-app purchases available.

### Is Eureka! Kreuzworträtsel free?

Eureka! Kreuzworträtsel is free to download, with in-app purchases available.

### Which has better reviews, Mental Math (Lite) or Eureka! Kreuzworträtsel?

Eureka! Kreuzworträtsel is rated higher. Mental Math (Lite) averages 4.7 out of 5 from 52 ratings, while Eureka! Kreuzworträtsel averages 5.0 from 2 ratings.

### Do Mental Math (Lite) or Eureka! Kreuzworträtsel have ads?

Eureka! Kreuzworträtsel shows ads; Mental Math (Lite) does not.

### Which is updated more often, Mental Math (Lite) or Eureka! Kreuzworträtsel?

Mental Math (Lite) ships an update every 16 months, and Eureka! Kreuzworträtsel every 2 months. Most recently, Mental Math (Lite) was updated on November 6, 2026 and Eureka! Kreuzworträtsel on November 3, 2026.

---

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