Abacus Lesson vs Abacus Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Abacus Lesson
Learn addition and subtraction using a virtual abacus, also known as a Soroban. This app helps you develop mental calculation skills, enabling you to perform calculations without physical tools.
- Learn addition
- Learn subtraction
- Virtual abacus (Soroban)
- Develop mental calculation skills
- Perform calculations without physical tools
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This is an app that you can learn addition and subtraction using an abacus. 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. Imagine that you can use calculations of about 3 digits in your life without physical tools. This app will give you the skill of calculation.
Abacus Simulator
Enhance your mental math abilities with interactive abacus exercises. This app offers guided lessons and daily drills to improve calculation speed, focus, and accuracy. Customize your abacus for a fun and engaging learning experience.
- Interactive abacus exercises
- Guided step-by-step lessons
- Daily skill-sharpening exercises
- Focus, speed, and accuracy improvement
- Customizable abacus
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Count faster with Abacus! Build your mental math skills with our interactive exercises. From basic to advanced calculations, we got you covered! It is easy, fun, and free! Why Abacus? Guided lessons - step-by-step tutorials on every level. Sharpen skills - improve focus, speed, and accuracy through our daily exercises. Fun - customize your abacus and have fun with it!
Screenshots
Verdict
The clearest difference is ads: Abacus Simulator at none against Abacus Lesson's shown. Abacus Lesson's advantage is review sentiment (93% vs 72%) and rating (4.9 vs 4.6). On price, update cadence, in-app purchases and monetization model 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 and Abacus Simulator sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Abacus Lesson holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Abacus Lesson has 813 ratings behind it against 31, so its average is the more settled of the two. Written reviews point the same way: 93% of Abacus Lesson's written reviews are positive against 72% of Abacus Simulator's.
Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on September 21, 2026.
| Parameter | Abacus Lesson | Abacus Simulator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (813 ratings) — better | 4.6 (31 ratings) |
| Positive reviews | 93.1% of reviews — better | 72.4% of reviews |
| Number of ratings | 813 — better | 31 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 138 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Hirokazu Komatsu | Nicholas Ang |
Customer experience
Abacus Lesson
Abacus Simulator
Bugs and requests
Abacus Lesson
Reported bugs
4 issues- Accidental app closure on iPhone during bead swiping
- Error in lesson 3 addition summary
- Sloppy English translation causing confusion
- Lessons difficult to read visually
Requested features
6 requests- Add Chinese Abacus (Suanpan) option
- Landscape view support
- Level skip functionality
- Better English translation/editing
- Clearer problem presentation with equation format
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- Improved lesson readability
Abacus Simulator
Not enough reviews yet to summarise bugs or requests.
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
Abacus Simulator
- Cloud Beads$1.99
- Coconut Beads$1.99
- Lemon Beads$1.99
Show 7 moreShow fewer
- Mushroom Beads$1.99
- Penguin Beads$1.99
- Flower Beads$1.99
- Orange Beads$1.99
- Snail Beads$1.99
- Snowman Beads$1.99
- Watermelon Beads$1.99
Questions
Is Abacus Lesson free?
Is Abacus Simulator free?
Which has better reviews, Abacus Lesson or Abacus Simulator?
Do Abacus Lesson or Abacus Simulator have ads?
Which is updated more often, Abacus Lesson or Abacus Simulator?
Other comparisons
