Flash Mental Math vs Abacus Lesson
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Abacus Lesson
Learn multiplication using a virtual abacus. This app teaches a simple and fast method for calculating multiplication, emphasizing the mental calculation benefits of the abacus over digital calculators.
- Virtual abacus for multiplication
- Simple and fast calculation methods
- Focus on mental calculation skills
- Step-by-step multiplication lessons
- Suitable for beginners
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An abacus is named "Soroban" in Japan. Do you know what an abacus is? The abacus is very simple calculator used in China, Japan, Korea and so on. Some people may say "Isn't it an unnecessary tool if you have a calculator such as a smartphone?". Answer would be "No". The biggest difference between electric calculators and the abacus is whether you need to hold it in your hand when calculating. Because of its simplicity, you will be able to easily use the abacus in your mind. In the app, we will explain simple and fast method of the multiplication using the abacus. To learn multiplication, it is essential to be able to add with an abacus. If you are new to addition and subtraction, we recommend that You first learn with the following app. https://apps.apple.com/us/app/abacus-lesson-add-sub/id1526785916 This app will give you the skill of calculation of multiplication.
Screenshots
Verdict
The clearest difference is in-app purchases: Flash Mental Math at none against Abacus Lesson's 3. Abacus Lesson's advantage is update cadence (every 2 weeks vs every 3 months) and rating (5.0 vs 4.7). On price, ratings volume, 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
Both are free to download. Abacus Lesson sells 3 one-off in-app purchases. Flash Mental Math asks for nothing beyond the download.
Abacus Lesson holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 18 and 14 respectively.
Flash Mental Math ships an update every 3 months, Abacus Lesson every 2 weeks. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.
| Parameter | Flash Mental Math | Abacus Lesson |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (18 ratings) | 5.0 (14 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 18 — better | 14 |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 138 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryouhei Azuma | Hirokazu Komatsu |
Customer experience
Flash Mental Math
Abacus Lesson
In-app purchases
Flash Mental Math
No in-app purchases
Abacus Lesson
- Donation Lv1 for hiding Ad$1.99
- Donation Lv2 for hiding Ad$3.99
- Donation Lv3 for hiding Ad$8.99
Questions
Is Flash Mental Math free?
Is Abacus Lesson free?
Which has better reviews, Flash Mental Math or Abacus Lesson?
Do Flash Mental Math or Abacus Lesson have ads?
Which is updated more often, Flash Mental Math or Abacus Lesson?
Other comparisons
