Comparison

ClearMath vs 9

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ClearMath

This app helps you deeply understand mathematical concepts by visualizing their relationships and connections. It offers guided learning paths, detailed explanations, and practical examples to build lasting knowledge beyond just getting answers.

Highlights
  • Concept Relationship Maps
  • Hierarchical Tree Structure
  • Comprehensive Concept Explanations
  • Guided Learning Paths
  • Progress Tracking
  • Mathematician Profiles
  • AI Explanations
Features
Read full description

Explore mathematics in a new light with ClearMath – an innovative app designed to enhance your understanding of mathematical concepts. In the Age of AI, learning is different. Getting an answer is easier than ever, but acquiring knowledge is not the same as truly mastering it. While AI can give you a fact, ClearMath helps you build the mental framework to understand its place in the big picture. We help you connect the dots, turning scattered information into deep, lasting wisdom. Key Features: • Concept Relationship Maps: Visualize the connections between mathematical ideas. • Hierarchical tree structure for concept application, clearly depicting inter-concept relationships. • Comprehensive Concept Explanations: Gain a clearer understanding of each concept, beyond formulas. • Guided Learning Paths: Follow structured routes that build your knowledge systematically. • Progress Tracking: Mark concepts as learned and monitor your advancement. • Favorites System: Create a personal collection of key concepts for efficient review. • Practical Questions & Examples: Engage with problems that reinforce conceptual understanding. • Mathematician Profiles: Learn about the thinkers behind mathematical developments, understanding the context of discoveries. • AI explanations: Powered by Gemini, GROK. ClearMath aims to support mathematical learning by focusing on conceptual understanding, an approach emphasized in modern educational research. Our app helps you view mathematics as an interconnected network of ideas rather than isolated techniques. Whether you're a student seeking deeper insight, an educator looking for teaching aids, or a curious learner interested in mathematical foundations, ClearMath offers a visual approach to exploring mathematical concepts. Enhance your mathematical journey from computation to comprehension. Download CleanMath today and discover a new way to approach mathematical concepts! https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://clearmath.upmemo.com/privacy-policy.html

About

9

Features
Read full description

Math boring? Give this five minutes. 9-Box trains times tables from 1 to 9. Kids get it immediately. Adults discover they're rustier than they thought. The grid has 9 blocks, 9 squares each, 81 problems total. Each block has a big background number. Each square has its own number. Multiply them, type the answer. Simple to understand, embarrassing to mess up under pressure. Five modes Plus+ shows you which square to solve next, a nudge for beginners. Pro removes all help: just you and 81 problems. Speed Run ends the moment you make one mistake. Your best time and your best attempt are saved separately, which creates a different kind of pressure than a simple high score. Table Select lets you pick one table or a few, useful when you know exactly where you're losing time. Mixed Sprint is 30 random problems from all tables. Done in a few minutes. Progress Each mode saves your best time, your previous time, and total games played.

Screenshots

ClearMath4 screens
94 screens

Verdict

The call

The clearest difference is ads: ClearMath at none against 9's shown. ClearMath also leads on update cadence (every 5 days vs every 5 weeks). 9's advantage is iOS requirement (14.0 vs 17). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ClearMath sells 2 in-app purchases, starting at $12.99 per month and 9 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ClearMath ships an update every 5 days, 9 every 5 weeks. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 6 level
ClearMath versus 9: the parameters behind the verdict, then further details
ParameterClearMath9
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterEvery 5 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS1714.0 — better
Further details — not scored
Size15 MB26 MB
Age rating4+4+
DeveloperKunshan Lefan Software Technology Co.,Ltd.Okko Meijer

In-app purchases

2 purchases

ClearMath

Subscriptions2
  • Monthly$12.991 Month
  • Annual$99.991 Year
1 purchases

9

One-time1
  • Verwijder advertenties$2.99

Questions

Is ClearMath free?
ClearMath is free to download, with in-app purchases available.
Is 9 free?
9 is free to download, with in-app purchases available.
Do ClearMath or 9 have ads?
9 shows ads; ClearMath does not.
Which is updated more often, ClearMath or 9?
ClearMath ships an update every 5 days, and 9 every 5 weeks. Most recently, ClearMath was updated on October 2, 2026 and 9 on October 5, 2026.

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