Comparison

Slapstack Math vs Blind Mahjong

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

Head to head
About

Slapstack Math

This game turns math flashcards into a fast-paced action and memory challenge. Players slap the table or perform other actions based on math problems and their answers, with customizable rules and difficulty.

Highlights
  • Math flashcard gameplay
  • Customizable action rules
  • Addition, subtraction, multiplication, division modes
  • Self-voicing and VoiceOver compatible
  • High-contrast colors and large print
  • Adjustable game speed
Read full description

Slapstack Math™ is an action and memory game that uses math flash cards instead of playing cards. Slapstack Math is fully accessible for all users. The goal is to collect the most points by pulling in the most cards. Two to eight players can play on the iPad®, or two to four players on the iPhone® or iPod® Touch. When the game starts, cards with single numbers are dealt and announced. At first, the only rule is to slap the table when an 11 comes up on the screen. The first player to slap the table gets to claim all the cards that have been dealt up to that time. After a while, you may want to add more rules – for example, players have to raise their arms and yell “Whee!” when an 8 comes up, and clap their hands when a 3 appears (and still slap the table on 11’s). You may add as many new rules as you want, making the game a little crazier each time. The real challenge with Slapstack Math comes when you change the single number cards to math flash cards. You may choose one of the following game variations: Addition – displays addition problems with sums from 2-12. Subtraction – subtraction problems with differences from 1-11. Multiplication – multiplication problems with products from 1-12. Division – division problems, using numbers up to 24, with quotients from 1-12. Addition and Subtraction – a mixture of problems from these two operations. Multiplication and Division – a mixture of problems from these two operations. All Four Operations – a mixture of problems from all of the operations. When playing the games using math operations, players have to calculate the answer to the problem before doing any required action. For example, if the problem is 7 + 4, players must come up with the answer, 11, and then slap the table (which is the required action for 11’s). If several numbers have actions assigned to them, players will have to do a lot of calculation, mental association, and even physical movement to play the game! Features: * Supports math learning objectives. * All game features are fully self-voicing. * Fully compatible with VoiceOver. * High-contrast colors and large print numbers. * Change the speed of play for different situations. Slapstack Math provides an enjoyable and motivating practice tool for basic math operations, a recreational app for fun, or a reward after classwork. Recommended ages: 7 and up.

About

Blind Mahjong

Experience traditional Chinese Mahjong with full accessibility for blind and visually impaired players. Enjoy offline single-player or online multiplayer modes, enhancing memory, concentration, and strategic thinking. This game offers a clean interface with high contrast and large print for all ages.

Highlights
  • VoiceOver screen reader support
  • Offline single-player mode
  • Online multiplayer for up to four players
  • High color contrast and large print
  • Adjustable computer player skill levels
  • Detailed how-to-play instructions
Features
Read full description

Traditional Chinese Mahjong was made accessible to everybody, including those who are blind or visually impaired. One player can play the game offline. Up to four players can play online. It is for all ages, allowing kids and adults to bond through playing together. Enjoy all the improved memorization, concentration, strategic thinking skills, and social skills that this relaxing game can bring you! For a demo video, visit https://youtu.be/FT-H5rczRnQ. Shorter videos can also be found at https://www.youtube.com/channel/UCgnb1_7vgSQbHGR0__wUw4A. Features: • Use of 136 tiles and most widely accepted Chinese Mahjong rules • Full support to iOS's screen reader VoiceOver • Clean and easy-to-use interface • High color contrast and large print for players with low vision • Detailed how-to-play instructions • Ability to play against computer players with basic, proficient, or advanced skills • Ability to play and chat with friends online (perfect for a group up to four) • One month free trial before a subscription is required For terms of use, visit https://forms.office.com/r/4veateTw8H

Screenshots

Slapstack Math3 screens
Blind Mahjong3 screens

Verdict

The call

The clearest difference is in-app purchases: Slapstack Math at none against Blind Mahjong's 2. Slapstack Math also leads on review sentiment (100% vs 67%) and rating (5.0 vs 4.6). Blind Mahjong's advantage is update cadence (fortnightly vs every 19 months) and ratings volume (8 vs 2). On price, 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. Blind Mahjong sells 2 in-app purchases, starting at $0.99 per month. Slapstack Math asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Slapstack Math holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 100% of Slapstack Math's written reviews are positive against 67% of Blind Mahjong's.

UpkeepUpdate frequency

Slapstack Math ships an update every 19 months, Blind Mahjong fortnightly. The most recent releases landed on June 1, 2026 and September 14, 2026 respectively.

Scorecard7 real differences · 3 level
Slapstack Math versus Blind Mahjong: the parameters behind the verdict, then further details
ParameterSlapstack MathBlind Mahjong
PriceFreeFree
Rating5.0 (2 ratings) — better4.6 (8 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings28 — better
Update frequencyEvery 19 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size5 MB7 MB
Age rating4+4+
DeveloperAmerican Printing House for the Blind (APH)Li Zhou

Customer experience

Slapstack Math

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Blind Mahjong

All ratings8 ratings
Positive87.5%
Neutral12.5%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Slapstack Math

No in-app purchases

2 purchases

Blind Mahjong

Subscriptions2
  • Monthly Subscription1 Month trial$0.991 Month
  • Yearly Subscription1 Month trial$9.991 Year

Questions

Is Slapstack Math free?
Slapstack Math is free to download, with no in-app purchases.
Is Blind Mahjong free?
Blind Mahjong is free to download, with in-app purchases available.
Which has better reviews, Slapstack Math or Blind Mahjong?
Slapstack Math is rated higher. Slapstack Math averages 5.0 out of 5 from 2 ratings, while Blind Mahjong averages 4.6 from 8 ratings.
Do Slapstack Math or Blind Mahjong have ads?
Neither Slapstack Math nor Blind Mahjong shows ads.
Which is updated more often, Slapstack Math or Blind Mahjong?
Slapstack Math ships an update every 19 months, and Blind Mahjong fortnightly. Most recently, Slapstack Math was updated on June 1, 2026 and Blind Mahjong on September 14, 2026.

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