Abacus vs Flash Mental Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Abacus
This app provides a digital soroban abacus for learning and practicing calculations. It visually displays the numerical value of each column as beads are moved, aiding in mental math development. Designed for beginners, it offers a simple interface to explore the ancient calculating tool.
- Digital soroban abacus simulation
- Visual representation of column values
- Supports mental math practice
- Simple swipe and shake controls
- Beginner-friendly interface
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A simple soroban abacus that also shows the number representing the value of each column. An abacus is a tool that has been used since ancient times to calculate. Calculations with numbers in the millions have been performed using the abacus, showing that it is a powerful tool. Mental math can be performed incredibly accurately by those who have mastered the abacus. And after witnessing some incredible mental math skills by a person who has used an abacus during his early years as a salesman, I decided to create a "beginner's abacus" based on the soroban abacus, which is a Japanese variant of the abacus. I hope this app will be of use to many people who are starting some interest in the abacus. [ Usage ] : = swipe up/down on the beads to make them move. = Shake the device to reset the beads. = Numbers on the top show the "actual" numbers of each column
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.
- Mental arithmetic practice
- Easy, normal, and difficult modes
- Customizable modes
- Brain training
- Calculation skill improvement
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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
Screenshots
Verdict
The clearest difference is rating: Flash Mental Math at 4.7 against Abacus's 2.6. Flash Mental Math also leads on review sentiment (100% vs 67%) and update cadence (every 3 months vs every 44 months). Abacus's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Flash Mental Math holds the better App Store score, 4.7 against 2.6. Both are backed by a comparable volume of ratings — 10 and 19 respectively. Written reviews point the same way: 67% of Abacus's written reviews are positive against 100% of Flash Mental Math's.
Abacus ships an update every 44 months, Flash Mental Math every 3 months. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.
| Parameter | Abacus | Flash Mental Math |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (10 ratings) | 4.7 (19 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 10 | 19 — better |
| Update frequency | Every 44 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 5 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Switt Kongdachalert | Ryouhei Azuma |
Customer experience
Abacus
Flash Mental Math
In-app purchases
Abacus
No in-app purchases
Flash Mental Math
No in-app purchases
Questions
Is Abacus free?
Is Flash Mental Math free?
Which has better reviews, Abacus or Flash Mental Math?
Do Abacus or Flash Mental Math have ads?
Which is updated more often, Abacus or Flash Mental Math?
Other comparisons
