Comparison

Mental Math vs RekenSter

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

Head to head
About

Mental Math

Enhance your arithmetic abilities with daily math challenges. This app offers over 30 difficulty levels, personalized exercises, and progress tracking to help users of all ages improve their calculation speed and accuracy.

Highlights
  • 30+ difficulty levels
  • Personalized exercises
  • Progress tracking
  • Quick sessions
  • User-friendly design
  • Engaging and interactive
Features
Read full description

Boost Your Mental Math Skills – Anytime, Anywhere! Sharpen your mental math skills or take on exciting number challenges with the ultimate math-practice companion! Challenge Your Brain: Explore 30+ difficulty levels, from basic addition and subtraction to multiplication tables and division. Perfect for kids, students, and math enthusiasts! Tailored Learning: Progress at your own pace with exercises matched to your skill level. Each level has its own icon to help you track achievements and keep improving. Track Your Progress: Review detailed summaries after each session to spot strengths and areas to improve. Restart levels anytime to aim for perfection! Fun for All Ages: Designed to be engaging, interactive, and rewarding for learners of all ages. Why Choose Us? • Clean, user-friendly design. • Quick sessions to fit any schedule. • Perfect for students, educators, and lifelong learners. Download now and start your journey to mental-math mastery! Practice smarter, calculate faster, and enjoy the challenge. Subscription Information: The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage your subscription or turn off auto-renew in your iTunes account settings. Any unused portion of a free trial period will be forfeited when you purchase a subscription. Support & Policies: • support@ulilab.com • https://ulilab.com • Privacy Policy: https://ulilab.com/privacy • Terms of Use: https://ulilab.com/terms

About

RekenSter

Features
Read full description

RekenSter helpt kinderen van de lagere school hun rekenen oefenen, in korte rondes van twaalf vragen. Je kiest eerst het leerjaar, daarna wat je wil oefenen. 1STE LEERJAAR - Splitsen tot 10 en tot 20 - Optellen en aftrekken tot 10 - Optellen en aftrekken tot 20, met en zonder brug over het tiental - Buurgetallen - Groter, kleiner of gelijk 2DE LEERJAAR - Optellen en aftrekken tot 100 - De maaltafels van 2, 3, 4, 5 en 10 - De bijbehorende deeltafels - Verdubbelen en halveren - Aanvullen tot het tiental en tot 100 3DE LEERJAAR - Alle maaltafels van 1 tot 10 - Deeltafels tot 10 - Delen tot 100 - Getallen tot 100: H, T en E, sprongen, getallenas en ordenen - Plus en min tot 100, zonder en met brug - Vraagstukken met plus en min Elk leerjaar heeft daarnaast een module waarin alle bewerkingen door elkaar komen. SLIM HERHALEN Wat je fout hebt, komt terug. RekenSter onthoudt per onderdeel welke oefeningen misgingen en biedt die automatisch opnieuw aan in de volgende ronde. Zo oefent je kind precies wat nog niet vlot gaat. GEMAAKT VOOR KINDEREN Grote cijfers, een eigen cijfertoetsenbord en meteen duidelijke feedback na elk antwoord. Geen tijdsdruk, geen verloren levens, geen straf voor een fout antwoord. WERKT OVERAL De volledige app zit op het toestel. Geen internet nodig, dus ook bruikbaar in de auto, op de trein of op vakantie. VEILIG Geen reclame. Geen in-app aankopen. Geen account. Geen enkele gegevensverzameling. Alle scores blijven op het toestel zelf staan. Geschikt voor iPhone en iPad.

Screenshots

Mental Math4 screens
RekenSter4 screens

Verdict

The call

The clearest difference is in-app purchases: RekenSter at none against Mental Math's 10. On price, update cadence, ads 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 sells 10 in-app purchases, starting at $4.99 per 7 days. RekenSter asks for nothing beyond the download.

UpkeepUpdate frequency

Mental Math ships an update every 3 weeks, RekenSter every 10 days. The most recent releases landed on September 22, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 8 level
Mental Math versus RekenSter: the parameters behind the verdict, then further details
ParameterMental MathRekenSter
PriceFreeFree
Rating5.0 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.117.0 — better
Further details — not scored
Size28 MB0 MB
Age rating4+4+
DeveloperAndrey LebedevInter Pipe Tool BV

In-app purchases

10 purchases

Mental Math

Subscriptions9
  • Premium Plus$4.997 Days
  • Premium Plus3 Days trial$4.997 Days
  • Premium Plus$5.991 Month
Show 6 more
  • Premium Plus$11.993 Months
  • Premium Plus$14.991 Year
  • Premium Plus$17.491 Year
  • Premium Plus$24.991 Year
  • Premium Plus7 Days trial$24.991 Year
  • Premium Plus7 Days trial$39.991 Year
One-time1
  • Premium Plus$39.99
None

RekenSter

No in-app purchases

Questions

Is Mental Math free?
Mental Math is free to download, with in-app purchases available.
Is RekenSter free?
RekenSter is free to download, with no in-app purchases.
Do Mental Math or RekenSter have ads?
Neither Mental Math nor RekenSter shows ads.
Which is updated more often, Mental Math or RekenSter?
Mental Math ships an update every 3 weeks, and RekenSter every 10 days. Most recently, Mental Math was updated on September 22, 2026 and RekenSter on October 29, 2026.

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