Comparison

Mental Math vs Subtraction for Kids

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

Head to head
About

Mental Math

This app transforms mental math practice into an engaging game. Solve calculations by writing answers directly on the screen, track progress with badges and records, and enjoy a child-friendly, ad-free experience with parental controls.

Highlights
  • Finger-based answer input
  • Timed calculation challenges
  • Multiple math operations
  • Progress tracking with badges
  • Parental controls and profiles
  • Ad-free and no data collection
Features
Read full description

Calmenta is a playful mental math app to learn and practice addition, subtraction, multiplication and division. Work on times tables up to 12, take on timed challenges and write your answers straight on the screen with your finger. Made for children who want to get better at math at their own pace, Calmenta offers mental math exercises from beginner to extreme, with or without a timer. LEARN AND PRACTICE MENTAL MATH • Addition, subtraction, multiplication, division, comparisons and powers. • Times tables up to 12, one table at a time or all together. • 4 difficulty levels to progress at your own pace. • An “All” mode to mix different types of calculation. • Build your own sets by choosing the operations, the level and the number of calculations. WRITE YOUR ANSWER WITH YOUR FINGER No keyboard needed: just write your answer anywhere on the screen. Calmenta recognizes the digits directly on the device, bringing back a natural way of doing math, close to pencil and paper. 20 CALCULATIONS AGAINST THE CLOCK Take on the challenge with sets of 20 mental math exercises and try to beat your best time. Would you rather practice quietly? Turn on Training mode to play without a timer and without time pressure. PROGRESS EVERY DAY • Beat your records and earn stars. • Collect badges as you progress. • Grow your streak of days played. • Track the operations and levels you have mastered. • Keep improving, one calculation at a time. FOR PARENTS • No ads. • No account required. • Progress data stays on the device. • A parents’ area lets you follow each child’s progress. • See results by operation, mastered levels and records. • Create several child profiles for the whole family. FREE AND PREMIUM Calmenta is free to use with 3 games a day and the first 2 levels. Calmenta Premium unlocks: • Unlimited games. • All 4 difficulty levels. • Several child profiles. • Detailed parental tracking. Mental math, times tables, challenges and progress: practice every day with Calmenta. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Subtraction for Kids

Features
Read full description

Free to try. One-time unlock — no subscriptions, no ads. Works offline. No data collected. Subtraction for Kids: Math helps children ages 6–8 learn to take away within 20 in a calm, playful way. Your child counts friendly objects, hops along a number line, solves number sentences and story problems, and traces the numbers 0–9 with the correct stroke order — all at their own pace, with gentle, encouraging feedback and never a timer or a score. What's inside: • Take Away — see subtraction come to life with objects you can tap • Count What's Left — pick-the-answer practice within 20 • Number Line Jumps — a clear, visual way to subtract • Number Sentences — build real math confidence • Missing Number — playful problem solving • Trace the Numbers — write 0–9 the right way • Story Problems — everyday subtraction to 20 Why parents love it: • No ads, no third-party tracking, no data collected — ever • Works completely offline • A parental gate protects every purchase and link • Kind by design: no timers, no scores, no pressure Free to download and try. A single one-time purchase — “Unlock Everything,” a lifetime unlock ($4.99) — opens all lessons and activities. This is a one-time purchase, not a subscription, and full access requires this in-app purchase. Privacy Policy: https://joykhansayan1.github.io/subtraction-for-kids-math/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://joykhansayan1.github.io/subtraction-for-kids-math/support.html Great for kindergarten and first grade math, homeschool, and Montessori-style practice.

Screenshots

Mental Math4 screens
Subtraction for Kids4 screens

Verdict

The call

Mental Math and Subtraction for Kids are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 3 in-app purchases, starting at $3.99 per month and Subtraction for Kids sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Mental Math versus Subtraction for Kids: the parameters behind the verdict, then further details
ParameterMental MathSubtraction for Kids
PriceFreeFree
Rating4.3 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size73 MB1 MB
Age rating4+4+
DeveloperHelloProgMD Shahariar Nazim Joy

In-app purchases

3 purchases

Mental Math

Subscriptions2
  • Premium Monthly$3.991 Month
  • Abonnement annuel7 Days trial$9.991 Year
One-time1
  • Premium à vie$22.99
1 purchases

Subtraction for Kids

One-time1
  • Unlock Everything$4.99

Questions

Is Mental Math free?
Mental Math is free to download, with in-app purchases available.
Is Subtraction for Kids free?
Subtraction for Kids is free to download, with in-app purchases available.
Do Mental Math or Subtraction for Kids have ads?
Neither Mental Math nor Subtraction for Kids shows ads.

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