Goocus vs 百Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Goocus
This mobile learning application is designed for smartphones, offering a user-friendly interface to make acquiring new knowledge enjoyable. It visualizes user achievements with graphs, aiming to reintroduce the fun of learning for individuals and organizations.
- Smartphone-optimized design
- Achievement visualization graphs
- User-friendly interface
- Focus on making learning fun
- Adopted by businesses and institutions
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Note: You will need to create a Goocus account before using this app. Overview: Goocus is Japan’s one-and-only learning app “specialized on Smartphones,” which has been adopted by a number of business enterprises and educational institutions. Features: A design that pursues user-friendliness on smartphones Graphs visualizing the achievements In nature, gaining a new knowledge is a fun thing to do. With Goocus, bring back the fun of “learning” that you have left behind somewhere.
百Math
This app helps users improve their mental arithmetic skills through a 100-problem calculation trainer. It offers various modes, progress tracking, and a global leaderboard to encourage practice and competition. A clean design and home screen widget provide convenient access.
- 100-problem calculation trainer
- Addition, Subtraction, Multiplication, Division modes
- Progress tracking (streak, average time, charts)
- Global ranking system
- Distraction-free design
- Home screen widget
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When did you last do mental math without reaching for your phone? 百Math was built by an engineer who realized he'd become too dependent on calculators and AI to do even simple arithmetic. This app is his answer — and maybe yours too. Trusted by users for 5 years, 百Math is a no-frills 100-problem calculation trainer. Solve all 100 as fast as you can, track your progress, and compete on the global leaderboard. 【Key Features】 ・4 Modes: Addition, Subtraction, Multiplication, and Division ・Schulte Table — a visual search game that sharpens your peripheral vision and focus ・Flash Calculation — a new mode that trains your instant recall ・Ghost Race — compete against your personal best ・Heatmap to spot your weak spots ・Clean, distraction-free design ・Global ranking system ・Streak counter, average time, and time chart to track improvement ・Home screen widget for quick access
Screenshots
Verdict
The clearest difference is ads: Goocus at none against 百Math's shown. Goocus also leads on monetization model (free vs ad-supported) and iOS requirement (13.0 vs 18.0). 百Math's advantage is update cadence (weekly vs every 6 weeks) and review sentiment (50% vs 31%). On price, 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.
Goocus ships an update every 6 weeks, 百Math weekly. The most recent releases landed on July 4, 2026 and August 11, 2026 respectively.
| Parameter | Goocus | 百Math |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 30.8% of reviews | 50.0% of reviews — better |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 18 MB |
| Age rating | 17+ | 4+ |
| Developer | Castalia Co. Limited. | naoya saito |
Customer experience
Goocus
百Math
In-app purchases
Goocus
No in-app purchases
百Math
No in-app purchases
