Comparison

Mental Math (Lite) vs Eureka! Kreuzworträtsel

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Mental Math (Lite)

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
Read full description

The classic with over a million downloads! From the reviews: "Great little App" "Easy and efficient" "Wonderful and fun" Boost your gray matter now! Here's a quick check: What's 7 × (4 + 9)? Needed more than five seconds? This can be better! With Mental Math you can playfully improve your mental calculation skills through various exercises. Image puzzles are an incentive to carry on practicing. Mental Math has been developed in collaboration with mathematics teachers and is successfully put to used in many schools. Choose the exercises from many categories: - Basic Arithmetics - Division with Remainder - Percentage Calculation - Reading and Writing Roman Numerals - Common Multiples and Divisors Moreover, there are - 4 Difficulty Levels - an adjustable Time Limit - Exercises in order of operations and braces - Exercises to practice specific Multiplication Tables

About

Eureka! Kreuzworträtsel

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
Read full description

Eureka! Eureka erstellt aus einer Datenbank mit über 10.000 Fragen automatisch Kreuzworträtsel und bietet somit schier unendlichen Rätselspaß! Sie können die Größe des Kreuzworträtsels angeben und aus welchen Kategorien und Schwierigkeitsgraden es aufgebaut sein soll, um es an Ihre Vorlieben anzupassen. Features: - Erstellung von Kreuzworträtseln in wenigen Sekunden - über 10.000 Fragen - drei Schwierigkeitsgrade - 14 Kategorien (Allgemein, Literatur, Sport, Geschichte, Musik, Film und Fernsehen, Natur, Kunst, Sprichwörter, IT und Computer, Astronomie und Raumfahrt, Geographie, Mythologie, Wissenschaft) - alle Fragen kreuzen sich (d.h. jeder Buchstabe ist Bestandteil einer waagerechten und einer senkrechten Frage) - Hilfefunktionen: es können bisherige Eingaben überprüft, Buchstaben aufgedeckt und alternative Fragen angezeigt werden - Rätsel teilen: nachdem Sie ein Rätsel gelöst haben, können Sie es an Ihre Freunde verschicken Zusätzlich zu den vorhandenen Fragen können Fragenpakete erworben werden. Beim Kauf eines Pakets werden automatisch die Werbeeinblendungen abgeschaltet.

Screenshots

Mental Math (Lite)4 screens
Eureka! Kreuzworträtsel4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Mental Math (Lite) versus Eureka! Kreuzworträtsel: the parameters behind the verdict, then further details
ParameterMental Math (Lite)Eureka! Kreuzworträtsel
PriceFreeFree
Rating4.7 (52 ratings)5.0 (2 ratings) — better
Positive reviews73.1% of reviews100.0% of reviews — better
Number of ratings52 — better2
Update frequencyEvery 16 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.310.0 — better
Further details — not scored
Size22 MB49 MB
Age rating4+4+
DeveloperTrilliarden Entertainment GmbHChristopher Hahn

Customer experience

Mental Math (Lite)

All ratings52 ratings
Positive94.2%
Neutral5.8%
Negative0.0%
Written reviews26 reviews
Positive73.1%
Neutral15.4%
Negative11.5%

Eureka! Kreuzworträtsel

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Mental Math (Lite)

One-time1
  • Full Version$2.99
8 purchases

Eureka! Kreuzworträtsel

One-time8
  • Zusatzpaket - Allgemein$1.99
  • Zusatzpaket - Allgemein 2$1.99
  • Zusatzpaket - Englisch$1.99
Show 5 more
  • Zusatzpaket - Film und TV$1.99
  • Zusatzpaket - Allgemein 3$1.99
  • Zusatzpaket - Musikcharts DE$1.99
  • Zusatzpaket - Geografie DACH$1.99
  • Paketbundle$5.99

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.

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