SoroTouch Mental Calculation vs 九九 掛け算の達人 !
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SoroTouch Mental Calculation
This app teaches abacus method mental calculation using patented imaging technology. Designed for children aged 5-8, it offers games and rankings to enhance math skills through daily practice. It requires membership registration via a web portal.
- Abacus method mental calculation
- Imaging skills training
- Daily missions and games
- Progress tracking and rankings
- Visible and Invisible modes
- Audio and rhythm-based learning
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【What is SoroTouch?】 Equip your child with mental calculation abilities that last a lifetime. Become a math pro with our world-standard ”two-handed system"! SoroTouch is an EdTech app designed to help children master abacus-style mental calculation by visualizing numbers as "bead images" through patented technology. We especially recommend it for children aged 5 to 8, a period of high brain plasticity. With just 30 minutes of daily practice, children aim to become mental calculation masters (handling problems like 2digits 8numbers addition and subtraction) within two years. *This app is exclusively for SoroTouch members. *A User ID and password are required for access. 【Features】 ・Just 30 Minutes a Day!: Consistent daily practice builds lifelong calculation skills. ・Fun, Game-like Learning!: Featuring over 20 types of games to support learning. Children learn fast and accurate touching while having fun. ・Patented Mental Calculation Board: Using our patented board based on abacus principles, children can start mental calculation training from day one. This is a new learning method to efficiently master "image-based mental calculation.” ・Global & Online: Compete and learn with children worldwide through "Rankings" and "SoroFes." By experiencing diversity, children learn to respect one another. ・Continuous Updates via Data Analysis: We analyze daily learning data to constantly improve and update the app. 【FAQ】 Q: Can I use the app immediately after installation? A: This app is for SoroTouch members only. Please note that prior membership registration and a valid User ID/password are required. Q: Why is my answer marked "incorrect" even if the number is right? A: SoroTouch focuses not only on the "answer" but also on "correct finger movements." Mastering the right touch ensures "authentic mental calculation abilities" that work even as numbers and digits increase. Please check the instructional videos for the "correct finger movements" first. Q: What should I do if the beads don't respond well to touch? A: You can adjust the bead size from Settings>Board to match your child's hand size. Also, the secret is to touch firmly with the pads of the fingers rather than using fingernails.
九九 掛け算の達人 !
This educational game helps children master multiplication tables. It offers a fun way to practice essential math skills for second graders.
- Multiplication study
- Math game
- Suitable for second graders
- Practice 99 multiplication tables
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This application is a math game. You can study multiplication.
Screenshots
Verdict
The clearest difference is rating: 九九 掛け算の達人 ! at 4.9 against SoroTouch Mental Calculation's 2.3. 九九 掛け算の達人 ! also leads on monetization model (ad-supported vs subscription) and device support (3 vs 1). SoroTouch Mental Calculation's advantage is ads (none vs shown) and ratings volume (39 vs 7). On price, update cadence and in-app purchases 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.
九九 掛け算の達人 ! holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: SoroTouch Mental Calculation has 39 ratings behind it against 7, so its average is the more settled of the two.
SoroTouch Mental Calculation ships an update every 2 months, 九九 掛け算の達人 ! monthly. The most recent releases landed on September 24, 2026 and September 6, 2026 respectively.
| Parameter | SoroTouch Mental Calculation | 九九 掛け算の達人 ! |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (39 ratings) | 4.9 (7 ratings) — better |
| Positive reviews | 32.1% of reviews | — |
| Number of ratings | 39 — better | 7 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Subscription | Ad-supported — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 460 MB | 155 MB |
| Age rating | 4+ | 4+ |
| Developer | SoroTouch Co., Ltd. | Ohmori Takeru |
Customer experience
SoroTouch Mental Calculation
九九 掛け算の達人 !
In-app purchases
SoroTouch Mental Calculation
No in-app purchases
九九 掛け算の達人 !
No in-app purchases
Questions
Is SoroTouch Mental Calculation free?
Is 九九 掛け算の達人 ! free?
Which has better reviews, SoroTouch Mental Calculation or 九九 掛け算の達人 !?
Do SoroTouch Mental Calculation or 九九 掛け算の達人 ! have ads?
Which is updated more often, SoroTouch Mental Calculation or 九九 掛け算の達人 !?
Other comparisons
