Comparison

Big Math Flash Cards vs xRapidMind

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

Head to head
About

Big Math Flash Cards

This app provides a digital flash card experience for practicing basic arithmetic operations. Users can flip cards, select answers, and track their progress with score percentages and elapsed time. Additional features for reviewing mistakes, custom sets, and different input modes are available through in-app purchases.

Highlights
  • Addition, Subtraction, Multiplication, Division
  • Configurable number of questions and answers
  • Score percentage and elapsed time tracking
  • Selectable color themes and sound options
  • Review incorrect answers (in-app purchase)
  • Custom card sets (in-app purchase)
Features
Read full description

Highly rated by teachers, parents and kids of all ages! Flip the card just like a real flash card! Simple, clean and easy to use interface. The front side of the card shows the question and the back side of the card shows the possible answers. Just tap to flip the card. Once you answer the question correctly, flick the card off the screen by swiping up. Features * Addition, Subtraction, Multiplication, Division * Score percentage and elapsed time displayed * Configurable number of questions * Configurable number of answers for multiple choice * Supports landscape or portrait card display modes * Selectable flash card color themes * Turn all sounds on or off Other great features available via "In App Purchase" * Review Incorrect - review the questions that were answered incorrectly * Score Cards - view and review past scores and questions * Specific Numbers - customize the first and second number ranges * Mixed Operations - ability to have cards with mixed operators * Flash Card Mode - displays the answer instead of multiple choice (swipe up to mark the card correct, swipe down to mark the card incorrect) * Manual Entry Mode - type your answer instead of selecting from a choice of possible answers * Custom Cards - make your own custom card set questions * Time Per Card - allows you to set a time limit for each card

About

xRapidMind

Engage in quick, game-like challenges to improve mental math, logic, and problem-solving skills. Learn fundamental coding concepts through interactive puzzles, adapting to your skill level from beginner to advanced.

Highlights
  • Mental math and logic puzzles
  • Coding concept challenges
  • Adaptive difficulty levels
  • Daily streaks and challenges
  • Progress tracking
  • Solo and competitive play
Features
Read full description

xRapidMind turns math and coding into a game you actually want to play. Jump into quick, bite-sized brain challenges that sharpen your mental math, logic, and problem-solving skills in just a few minutes a day — no textbooks, no lectures, just fast rounds that make learning stick. Whether you're 8 or 80, xRapidMind meets you where you are. Start with rapid-fire arithmetic and pattern puzzles, then work your way up to real coding concepts like loops, variables, and logic — taught through playful challenges instead of dry tutorials. Features: Quick Play brain games: mental math, number patterns, and logic puzzles Coding challenges that teach real programming concepts step by step Difficulty that adapts to you, from beginner to advanced Daily streaks and challenges to keep your brain sharp Progress tracking so you can see how fast — and smart — you're getting Fun for solo play or friendly competition with family and friends No two sessions feel the same. Whether you have 60 seconds or 10 minutes, xRapidMind gives your brain a workout and teaches you something real every time you play. Train your brain. Learn to code. Master math — one quick round at a time. Privacy Policy: https://amun-studios.com/xrapidmind-privacy-policy Terms of Service: https://amun-studios.com/xrapidmind-terms-of-service

Screenshots

Big Math Flash Cards4 screens
xRapidMind4 screens

Verdict

The call

The clearest difference is rating: xRapidMind at 5.0 against Big Math Flash Cards's 4.2. xRapidMind also leads on in-app purchases (none vs 7) and review sentiment (100% vs 77%). Big Math Flash Cards's advantage is ratings volume (41K vs 1). On price, ads, device support and iOS requirement 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. Big Math Flash Cards sells 7 one-off in-app purchases. xRapidMind asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

xRapidMind holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Big Math Flash Cards has 41K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 77% of Big Math Flash Cards's written reviews are positive against 100% of xRapidMind's.

Scorecard5 real differences · 5 level
Big Math Flash Cards versus xRapidMind: the parameters behind the verdict, then further details
ParameterBig Math Flash CardsxRapidMind
PriceFreeFree
Rating4.2 (41K ratings)5.0 (1 ratings) — better
Positive reviews77.0% of reviews100.0% of reviews — better
Number of ratings41K — better1
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size3 MB27 MB
Age rating4+4+
DeveloperMasato TakagiAmun Studios LLC

Customer experience

Big Math Flash Cards

All ratings40,682 ratings
Positive79.7%
Neutral5.5%
Negative14.8%
Written reviews1,048 reviews
Positive77.0%
Neutral6.7%
Negative16.3%

xRapidMind

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Big Math Flash Cards

Reported bugs

2 issues
  • Incorrect answers marked as wrong
  • Glitches when swiping answers

Requested features

5 requests
  • More difficulty levels
  • Ability to choose specific math operations
  • Addition of word problems
  • Inclusion of fractions and exponents
  • Gamification and rewards system

xRapidMind

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Big Math Flash Cards

One-time7
  • Review Incorrect$0.99
  • Score Cards$0.99
  • Specific Numbers$0.99
Show 4 more
  • Mixed Operations$0.99
  • Levels 4,5,6$0.99
  • Flash Card Mode$0.99
  • All Bundle$4.99
None

xRapidMind

No in-app purchases

Questions

Is Big Math Flash Cards free?
Big Math Flash Cards is free to download, with in-app purchases available.
Is xRapidMind free?
xRapidMind is free to download, with no in-app purchases.
Which has better reviews, Big Math Flash Cards or xRapidMind?
xRapidMind is rated higher. Big Math Flash Cards averages 4.2 out of 5 from 41K ratings, while xRapidMind averages 5.0 from 1 ratings.
Do Big Math Flash Cards or xRapidMind have ads?
Neither Big Math Flash Cards nor xRapidMind shows ads.

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