Comparison

Mathmaji vs Japi

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

Head to head
About

Mathmaji

This app offers a K-5 math curriculum using the Japanese method of structured problem-solving. It features over 500 exercises designed to build confidence, comprehension, and mental calculation skills. Track progress with a comprehensive learning management system.

Highlights
  • K-5 numerical math curriculum
  • 500+ engaging exercises
  • Japanese instruction techniques
  • Tailored lessons and games
  • Comprehensive Learning Management System
  • Boosts confidence and comprehension
Features
Read full description

Mathmaji is an award-winning educational experience that puts the proven Japanese method of structured problem solving at your child's fingertips. Mathmaji is the only math app with a complete K-5 numerical math curriculum to teach new concepts, and our 500+ engaging exercises are specially designed to hone problem-solving skills. Mathmaji’s innovative combination Japanese instruction techniques and tailored lessons, games, and practice exercises earned it the Asian EdTech Summit Global Award Gold Prize and the Global EdTech Startup Award. ·    Build a strong foundation in essential math skills, boosting confidence and comprehension. ·    Master new concepts and apply them to real-world problems, develop a strong number sense, and learn methods for quick mental calculation. ·    Find out how the Japanese approach to math ed takes the mystery out of multiplication, division, and other concepts that may have your student stumped. ·    Track your student’s progress with Mathmaji’s comprehensive Learning Management System. Get two weeks full access for FREE. Say goodbye to math anxiety! With Mathmaji, a few minutes a day is all it takes to make math your child’s favorite subject!

About

Japi

Features
Read full description

Japi is your best AI tutor, designed to make learning English fun, efficient, and personalized. Whether you're a beginner or an advanced learner, Japi’s advanced AI technology adapts to your unique learning style and pace, offering tailored lessons that help you reach your language goals faster. Key Features: Personalized Learning: Japi customizes lessons based on your proficiency level and progress, ensuring an optimized learning path just for you. Engaging AI Conversations: Practice real-life conversations with Japi, improving your listening, speaking, and grammar skills interactively. 24/7 Availability: Learn anytime, anywhere with round-the-clock access to lessons, exercises, and language tips. Track Your Progress: Monitor your achievements and get insights on areas to improve, helping you stay motivated. Comprehensive Lessons: Covering all aspects of language learning, from vocabulary and grammar to pronunciation and fluency. Why Choose Japi? Japi leverages cutting-edge AI technology to redefine English learning. Designed for modern learners, Japi adapts to your schedule and learning needs, offering a unique and interactive approach to mastering English. Whether for personal growth, work, or travel, Japi makes English learning accessible, flexible, and enjoyable for everyone. Innovating Education: In today’s fast-evolving educational landscape, Japi offers a transformative solution by providing scalable, efficient, and impactful learning experiences. Embrace the future of education with Japi as your AI tutor and unlock your full potential in English. Download Japi today and start your personalized learning journey! Terms of Use: https://japi.ai/terms_of_use/

Screenshots

Mathmaji4 screens
Japi4 screens

Verdict

The call

The clearest difference is update cadence: Mathmaji at weekly against Japi's every 3 weeks. On price, ads, 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. Mathmaji sells 2 in-app purchases, starting at $15.00 per month and Japi sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Mathmaji ships an update weekly, Japi every 3 weeks. The most recent releases landed on September 26, 2026 and September 23, 2026 respectively.

Scorecard1 real difference · 9 level
Mathmaji versus Japi: the parameters behind the verdict, then further details
ParameterMathmajiJapi
PriceFreeFree
Rating4.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size82 MB101 MB
Age rating4+4+
DeveloperMathmaji Co., Ltd.Japi Edu Tech

In-app purchases

2 purchases

Mathmaji

Subscriptions2
  • Plus Monthly(1 Month)14 Days trial$15.001 Month
  • Plus Annual (1 Year)14 Days trial$124.991 Year
4 purchases

Japi

Subscriptions4
  • Japi Pro - Monthly (Disc. 75%)$1.991 Month
  • Japi Pro - Monthly (Disc. 50%)1 Month trial$8.991 Month
  • Japi Pro - Monthly$8.991 Month
Show 1 more
  • Japi Pro - Yearly$39.991 Year

Questions

Is Mathmaji free?
Mathmaji is free to download, with in-app purchases available.
Is Japi free?
Japi is free to download, with in-app purchases available.
Do Mathmaji or Japi have ads?
Neither Mathmaji nor Japi shows ads.
Which is updated more often, Mathmaji or Japi?
Mathmaji ships an update weekly, and Japi every 3 weeks. Most recently, Mathmaji was updated on September 26, 2026 and Japi on September 23, 2026.

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