Comparison

Flash Mental Math vs Indigo Math Abacus for kids

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

Head to head
About

Flash Mental Math

Practice mental arithmetic with various difficulty levels and custom modes. This app serves as a brain training tool to enhance calculation skills.

Highlights
  • Mental arithmetic practice
  • Easy, normal, and difficult modes
  • Customizable modes
  • Brain training
  • Calculation skill improvement
Features
Read full description

Flash mental arithmetic practice app In addition to the easy, normal, and difficult modes, there are also custom modes. It can also be a brain training to improve mental arithmetic

About

Indigo Math Abacus for kids

This app offers interactive mental math and brain training for children. It uses gamified tasks and an abacus visualization to improve calculation speed, focus, and logical thinking. Designed to enhance mathematical intuition and academic performance.

Highlights
  • Mental calculations practice
  • Abacus (Soroban) visualization
  • Gamified learning tasks
  • Adjustable complexity levels
  • User-friendly interface
  • Improves focus and concentration
Features
Read full description

Indigo Math Abacus for kids Mental math and brain training in an interactive format for children on App Store Indigo Math Abacus for kids is an engaging intellectual trainer, specifically designed to simultaneously develop both hemispheres of the brain, enhance focus, concentration, logical and creative thinking in children. Through an interactive learning approach, children will eagerly engage in brain gymnastics, improving their thinking speed and calculating faster than a calculator. Key Features: Mental Calculations: The app offers a wide range of tasks that require quick computational skills and precision in responses. Regular practice will enhance a child's mathematical intuition and ability to perform swift mental calculations. Abacus (Soroban) Usage: The app enables children to visualize mathematical operations using the traditional Japanese abacus, fostering a better understanding of numerical concepts. Gamified Tasks: Beyond enhancing mathematical prowess, the app provides enjoyable tasks presented in the form of exciting games, stimulating and maintaining interest in learning. Gradual Complexity Levels: Users can adjust the difficulty levels of tasks according to their proficiency and capabilities. Starting with simple exercises, users progressively advance to more challenging ones, promoting continuous growth and improvement. User-Friendly Interface: The app boasts an intuitive and friendly interface, making learning and brain training a convenient experience. Users can access the app anytime and anywhere, seamlessly integrating learning into their daily routines. Regular use of the app aids in elevating oral calculation skills, impacting performance in academic subjects and increasing knowledge retention. Indigo Math Abacus for kids is not merely a toy but a potent tool for children's development and cognitive enhancement. It will serve as a reliable aid in improving thinking, memory, and mathematical abilities, empowering your child to become more intelligent, astute, and successful in their academic journey. Embrace the opportunity to download the app from App Store now and empower your child to become a true genius! Terms of Service: https://indigomental.com/terms Privacy Policy: https://indigomental.com/privacy

Screenshots

Flash Mental Math3 screens
Indigo Math Abacus for kids4 screens

Verdict

The call

The clearest difference is rating: Flash Mental Math at 4.6 against Indigo Math Abacus for kids's 2.0. Flash Mental Math also leads on review sentiment (100% vs 63%) and in-app purchases (none vs 3). Indigo Math Abacus for kids's advantage is update cadence (every 3 weeks vs every 3 months). 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. Indigo Math Abacus for kids sells 3 in-app purchases, starting at $5.99 per month. Flash Mental Math asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flash Mental Math holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: Flash Mental Math has 20 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Flash Mental Math's written reviews are positive against 63% of Indigo Math Abacus for kids's.

UpkeepUpdate frequency

Flash Mental Math ships an update every 3 months, Indigo Math Abacus for kids every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Flash Mental Math versus Indigo Math Abacus for kids: the parameters behind the verdict, then further details
ParameterFlash Mental MathIndigo Math Abacus for kids
PriceFreeFree
Rating4.6 (20 ratings) — better2.0 (1 ratings)
Positive reviews100.0% of reviews — better62.5% of reviews
Number of ratings20 — better1
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.6 — better16.0
Further details — not scored
Size14 MB75 MB
Age rating4+4+
DeveloperRyouhei AzumaINDYGO MENTAL, TOV

Customer experience

Flash Mental Math

All ratings19 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Indigo Math Abacus for kids

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews8 reviews
Positive62.5%
Neutral0.0%
Negative37.5%

In-app purchases

None

Flash Mental Math

No in-app purchases

3 purchases

Indigo Math Abacus for kids

Subscriptions3
  • 1 month7 Days trial$5.991 Month
  • 3 months$80.993 Months
  • year$304.991 Year

Questions

Is Flash Mental Math free?
Flash Mental Math is free to download, with no in-app purchases.
Is Indigo Math Abacus for kids free?
Indigo Math Abacus for kids is free to download, with in-app purchases available.
Which has better reviews, Flash Mental Math or Indigo Math Abacus for kids?
Flash Mental Math is rated higher. Flash Mental Math averages 4.6 out of 5 from 20 ratings, while Indigo Math Abacus for kids averages 2.0 from 1 ratings.
Do Flash Mental Math or Indigo Math Abacus for kids have ads?
Both Flash Mental Math and Indigo Math Abacus for kids show ads.
Which is updated more often, Flash Mental Math or Indigo Math Abacus for kids?
Flash Mental Math ships an update every 3 months, and Indigo Math Abacus for kids every 3 weeks. Most recently, Flash Mental Math was updated on November 7, 2026 and Indigo Math Abacus for kids on November 3, 2026.

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