Comparison

Mental Math Trainer vs Retainly

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

Head to head
About

Mental Math Trainer

Enhance your arithmetic abilities with this app. Practice addition, subtraction, multiplication, and division through engaging games and custom sessions. Track your progress and challenge friends to boost your mental math confidence and speed.

Highlights
  • Addition, subtraction, multiplication, division practice
  • Math Arcade mode with increasing difficulty
  • Customizable practice sessions
  • Memory training games (Find the Pairs)
  • Progress tracking
  • Game Center integration for challenges
Features
Read full description

Practice and improve your math skills with Mental Math Trainer Games - Pure Math. Play and practice just a few minutes a day and keep your mind sharp. Great brain training for you to increase your confidence and speed at mental math. No matter if it's addition, subtraction, multiplication or division, we guarantee you hours of practice with Mental Math Trainer Games - Pure Math. And every time you play it's a different experience. Questions are always random. Great way to train and learn math. With its increasing difficulty, Mental Math Addition Games - Pure Math is suitable for all ages - kids, students, adults. Pure practice and learning. We store your progress, so you can continue where you left. The faster you answer the questions, the more points you get. In Math Arcade mode you get to complete math levels with increasing difficulty starting from the most basic tasks. The levels are divided into 5 main categories - Addition, Subtraction, Multiplication, Division, and Mixed Mode. Math Practice mode in Mental Math Addition Games - Pure Math allows you to create custom practice sessions depending on the operations you wish to train. You can also select custom practice duration, difficulty level, and custom numbers. Math games where you solve math problems and a great way to give your brain a workout and improve your cognitive function. Learning math tables has never been easier. Play Math Tables, repeat a few times a day, and train your memory. Multiplication tables, times tables, brain games, addition games, and more. Find the Pairs (Math Cards) is a math game where you match math cards by number or color until you find all pairs and clear the board. Cool math game to train your memory. Mental Math Addition Games - Pure Math supports Game Center, so you can compare your score to your friends' and even challenge them to see who's doing better in Math. Some levels in the app are free to play and you can unlock all features and levels (1200+) by upgrading to PRO. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Retainly

Features
Read full description

Retainly turns learning into a rewarding journey. Discover fascinating facts across dozens of topics - from Ancient Civilizations to Ocean Life, World Wars to Lost Cities - and actually remember what you learn. HOW IT WORKS - Read interesting, bite-sized statements on topics you love - Answer thoughtful questions that make you think - Earn points as you build your knowledge - Return periodically to reinforce what you've learned - Watch your retention improve with spaced repetition DIVERSE TOPICS Explore captivating content across: - History & Ancient Civilisations - Science & Nature - Wars & Military History - Geography & Lost Cities - Pop Culture & Entertainment - Technology & Innovation - Literature & Arts - And many more! WHY RETAINLY? - Science-backed spaced repetition system - Engaging, non-obvious questions that challenge your thinking - Curated fascinating facts that are actually interesting - Gamified learning with rewards and progress tracking - Perfect for curious minds who love learning - No overwhelming textbooks - just bite-sized knowledge Whether you're a history buff, science enthusiast, or lifelong learner, Retainly makes knowledge retention effortless and enjoyable. Stop forgetting what you read. Start retaining what matters. Terms of Usage: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mental Math Trainer4 screens
Retainly4 screens

Verdict

The call

Mental Math Trainer and Retainly 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 Trainer sells 7 in-app purchases, starting at $2.99 per month and Retainly sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Mental Math Trainer versus Retainly: the parameters behind the verdict, then further details
ParameterMental Math TrainerRetainly
PriceFreeFree
Rating4.5 (228 ratings) — better—
Positive reviews57.8% of reviews—
Number of ratings228 — better—
Update frequencyFortnightly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size50 MB45 MB
Age rating4+12+
DeveloperStoyan HristovTOBES LTD

Bugs and requests

Mental Math Trainer

Reported bugs

8 issues
  • App crashes or doesn't open
  • Purchases not unlocking features
  • In-app purchase issues
  • Timer continues when paused
  • Drag response not registering input
Show 3 more
  • Division section glitches
  • App stops working after updates
  • Purchased content locked again

Requested features

10 requests
  • Option to choose keypad style
  • More difficult levels
  • Infinite or custom exercise mode
  • Dark mode support
  • Landscape mode support
Show 5 more
  • Add 6-digit numbers
  • Streak feature (like Duolingo)
  • Option to choose difficulty level
  • Add more levels
  • Sandbox mode for custom questions

Retainly

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Mental Math Trainer

Subscriptions6
  • Unlimited Access$2.991 Month
  • Unlimited Access3 Days trial$2.997 Days
  • Unlimited Access7 Days trial2 variants$3.991 Month
Show 3 more
  • Unlimited Access$9.991 Year
  • Unlimited Access7 Days trial$12.991 Year
  • Unlimited Access2 variants$14.991 Year
One-time1
  • Unlock Everything$17.99
1 purchases

Retainly

Subscriptions1
  • Premium Access$4.991 Month

Questions

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

Other comparisons