Abacus Lesson vs Abaculator
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.
Abaculator
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Abaculator can be used as a calculator or an abacus. You can do addition, subtraction, multiplication and division with abaculator. Simple tutorials are available for you to learn abacus. And you can switch between 3 languages. The bead movement speed can also be adjusted.
Screenshots
Verdict
The clearest difference is in-app purchases: Abaculator at none against Abacus Lesson's 3. Abaculator also leads on ads (none vs shown). Abacus Lesson's advantage is update cadence (every 3 weeks vs every 35 months) and iOS requirement (11.0 vs 15.6). On price 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. Abaculator asks for nothing beyond the download.
Abacus Lesson ships an update every 3 weeks, Abaculator every 35 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | Abacus Lesson | Abaculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (839 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 839 — better | — |
| Update frequency | Every 3 weeks — better | Every 35 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 138 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Hirokazu Komatsu | Chi-Cheng Liao |
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
Abaculator
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
Abaculator
No in-app purchases
