Comparison

Subtraction Math Trainer vs Greatest Common Divisor PRO

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

Head to head
About

Subtraction Math Trainer

Features
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Subtraction Math Trainer is a math learning app designed to help you to practice subtraction. The built-in handwriting recognition allows you to draw answers directly on the screen. Comes with a number of simple mini-games to make learning more effective and less boring. You can practice the following math skills: Subtraction facts - numbers up to 10 Subtraction facts - numbers up to 18 Subtract a multiple of ten Relate addition and subtraction Subtraction facts - numbers up to 20 Subtract a one-digit number from a two-digit number Subtract two two-digit numbers Subtract multiples of 10 Subtract multiples of 100 Subtract multiples of 10 or 100 Balance subtraction equations Subtraction facts - numbers up to 100 Subtract two three-digit numbers Complete the subtraction sentence up to three digits Subtract numbers with four or five digits Balance subtraction equations up to three digits

About

Greatest Common Divisor PRO

Features
Read full description

Finish your homework instantly. Prepare for exams without stress. Complete step-by-step solutions. Enter your numbers and calculate the greatest common divisor (GCD). HOW IT WORKS Enter your numbers into the appropriate fields and get started. You'll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don't need it. Only anonymous data is collected, for example: - which features are used - how many solutions are generated This helps us improve the app. It is not possible to identify you from this data. EXTRAS - Prime factorization - Using divisors - Euclidean algorithm - Curated learning videos - Feedback for incorrect input - Manage your own solutions - App introduction CONTACT Questions and feedback are always welcome via Discord or directly in the app review.

Screenshots

Subtraction Math Trainer4 screens
Greatest Common Divisor PRO4 screens

Verdict

The call

The clearest difference is update cadence: Greatest Common Divisor PRO at every 5 weeks against Subtraction Math Trainer's every 34 months. Greatest Common Divisor PRO also leads on price ($1.99 vs $2.99). Subtraction Math Trainer's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases 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

Subtraction Math Trainer costs $2.99 and Greatest Common Divisor PRO $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Subtraction Math Trainer ships an update every 34 months, Greatest Common Divisor PRO every 5 weeks. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 3 level
Subtraction Math Trainer versus Greatest Common Divisor PRO: the parameters behind the verdict, then further details
ParameterSubtraction Math TrainerGreatest Common Divisor PRO
Price$2.99$1.99 — better
Update frequencyEvery 34 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size18 MB179 MB
Age rating4+4+
DeveloperSergey MaluginGlindemann, Sennoun, Langer GbR

In-app purchases

None

Subtraction Math Trainer

No in-app purchases

None

Greatest Common Divisor PRO

No in-app purchases

Questions

Is Subtraction Math Trainer free?
Subtraction Math Trainer costs $2.99, with no in-app purchases.
Is Greatest Common Divisor PRO free?
Greatest Common Divisor PRO costs $1.99, with no in-app purchases.
Do Subtraction Math Trainer or Greatest Common Divisor PRO have ads?
Neither Subtraction Math Trainer nor Greatest Common Divisor PRO shows ads.
Which is updated more often, Subtraction Math Trainer or Greatest Common Divisor PRO?
Subtraction Math Trainer ships an update every 34 months, and Greatest Common Divisor PRO every 5 weeks. Most recently, Subtraction Math Trainer was updated on October 5, 2026 and Greatest Common Divisor PRO on October 24, 2026.

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