Kraepelin Test: Brain Math: iPhone vs Android
Kraepelin Test: Brain Math by Gunawan Santoso is on both the App Store and Google Play. Here are both versions together: downloads, users, revenue, ratings and chart positions, store by store with totals.
Rating
4.6 ★
18 ratings, both stores
Measured
Best rank now
#146
Android · 
Education Free
Education FreeMeasured
App Store
App details
App ID
6756816118
Publisher
Gunawan Santoso
Minimum OS
iOS 15.0+
iPhone 6s and later
Content rating
4+
Languages
1
EN
Size
48 MB
Google Play
App details
App ID
com.microappdev.tes_kraepelin
Publisher
Micro App Digital
Content rating
Everyone
Kraepelin Test: Brain Math downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| iPhone | – | 1k+ |
| Google Play | – | 10k+ Measured |
| Total | – | 10k+ Confidence |
How this is calculated
iPhone: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Kraepelin Test: Brain Math makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 2 ad networks
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks now
Both stores, across every country we track.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.6 ★ | 18 |
| Google Play | – | – |
| Both stores | 4.6 ★ weighted by ratings | 18 |
About Kraepelin Test: Brain Math
Kraepelin Test is a brain training app that helps you practice number addition exercises inspired by the classic Kraepelin method. Sharpen your mental arithmetic, build concentration, and track your progress over time.
Whether you want to train your focus, practice mental math, or simply challenge yourself with a fun cognitive exercise, this app gives you unlimited practice with real-time scoring and detailed performance insights.
HOW IT WORKS
The app presents columns of single-digit numbers. Your task is to add each pair of adjacent numbers and enter only the last digit of the sum. Try to work as fast and accurately as possible before the timer moves to the next column.
FEATURES
- Classic Kraepelin-style number addition exercise
- Adjustable session duration and difficulty
- Configurable column timing for flexible practice
- Practice mode for relaxed training without time pressure
- Detailed results with accuracy, speed, and consistency metrics
RESULTS & PERFORMANCE TRACKING
- Accuracy percentage for each column
- Speed score (calculations completed per minute)
- Consistency graph showing your focus stability
- Historical performance tracking with progress charts
- Compare your scores across multiple sessions
GREAT FOR
- Students looking to improve concentration and mental math
- Brain training enthusiasts who enjoy cognitive challenges
- People who want to build better focus habits
- Anyone curious about the Kraepelin method of cognitive training
MORE FEATURES
- Clean, distraction-free interface designed for focus
- Dark mode for comfortable use day and night
- No account or sign-up required
- Works 100% offline
- Lightweight and fast
Download now and start building better concentration and mental speed.
Whether you want to train your focus, practice mental math, or simply challenge yourself with a fun cognitive exercise, this app gives you unlimited practice with real-time scoring and detailed performance insights.
HOW IT WORKS
The app presents columns of single-digit numbers. Your task is to add each pair of adjacent numbers and enter only the last digit of the sum. Try to work as fast and accurately as possible before the timer moves to the next column.
FEATURES
- Classic Kraepelin-style number addition exercise
- Adjustable session duration and difficulty
- Configurable column timing for flexible practice
- Practice mode for relaxed training without time pressure
- Detailed results with accuracy, speed, and consistency metrics
RESULTS & PERFORMANCE TRACKING
- Accuracy percentage for each column
- Speed score (calculations completed per minute)
- Consistency graph showing your focus stability
- Historical performance tracking with progress charts
- Compare your scores across multiple sessions
GREAT FOR
- Students looking to improve concentration and mental math
- Brain training enthusiasts who enjoy cognitive challenges
- People who want to build better focus habits
- Anyone curious about the Kraepelin method of cognitive training
MORE FEATURES
- Clean, distraction-free interface designed for focus
- Dark mode for comfortable use day and night
- No account or sign-up required
- Works 100% offline
- Lightweight and fast
Download now and start building better concentration and mental speed.
Kraepelin Test: Brain Math iPhone
Not in any tracked top chart right now.
Updated 28 Sep 2026 · rankings refresh through the day
DeveloperGunawan Santoso
CategoryEducation
PriceFree
Released
Rating★ 4.6 (18)
Version1.6.2
Age rating4+
First seen by us 24 Sep 2026
24 Sep 2026Installs (est.)1k+ worldwide
Rating
4.6 ★
18 ratings
Measured
Kraepelin Test: Brain Math on the App Store
App details
App ID
6756816118
Publisher
Gunawan Santoso
Minimum OS
iOS 15.0+
iPhone 6s and later
Content rating
4+
Languages
1
EN
Size
48 MB
Kraepelin Test: Brain Math downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Kraepelin Test: Brain Math makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 2 ad networks
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.6 ★
18 ratings
Measured
Ratings
18
Measured
About Kraepelin Test: Brain Math
Kraepelin Test is a brain training app that helps you practice number addition exercises inspired by the classic Kraepelin method. Sharpen your mental arithmetic, build concentration, and track your progress over time.
Whether you want to train your focus, practice mental math, or simply challenge yourself with a fun cognitive exercise, this app gives you unlimited practice with real-time scoring and detailed performance insights.
HOW IT WORKS
The app presents columns of single-digit numbers. Your task is to add each pair of adjacent numbers and enter only the last digit of the sum. Try to work as fast and accurately as possible before the timer moves to the next column.
FEATURES
- Classic Kraepelin-style number addition exercise
- Adjustable session duration and difficulty
- Configurable column timing for flexible practice
- Practice mode for relaxed training without time pressure
- Detailed results with accuracy, speed, and consistency metrics
RESULTS & PERFORMANCE TRACKING
- Accuracy percentage for each column
- Speed score (calculations completed per minute)
- Consistency graph showing your focus stability
- Historical performance tracking with progress charts
- Compare your scores across multiple sessions
GREAT FOR
- Students looking to improve concentration and mental math
- Brain training enthusiasts who enjoy cognitive challenges
- People who want to build better focus habits
- Anyone curious about the Kraepelin method of cognitive training
MORE FEATURES
- Clean, distraction-free interface designed for focus
- Dark mode for comfortable use day and night
- No account or sign-up required
- Works 100% offline
- Lightweight and fast
Download now and start building better concentration and mental speed.
Whether you want to train your focus, practice mental math, or simply challenge yourself with a fun cognitive exercise, this app gives you unlimited practice with real-time scoring and detailed performance insights.
HOW IT WORKS
The app presents columns of single-digit numbers. Your task is to add each pair of adjacent numbers and enter only the last digit of the sum. Try to work as fast and accurately as possible before the timer moves to the next column.
FEATURES
- Classic Kraepelin-style number addition exercise
- Adjustable session duration and difficulty
- Configurable column timing for flexible practice
- Practice mode for relaxed training without time pressure
- Detailed results with accuracy, speed, and consistency metrics
RESULTS & PERFORMANCE TRACKING
- Accuracy percentage for each column
- Speed score (calculations completed per minute)
- Consistency graph showing your focus stability
- Historical performance tracking with progress charts
- Compare your scores across multiple sessions
GREAT FOR
- Students looking to improve concentration and mental math
- Brain training enthusiasts who enjoy cognitive challenges
- People who want to build better focus habits
- Anyone curious about the Kraepelin method of cognitive training
MORE FEATURES
- Clean, distraction-free interface designed for focus
- Dark mode for comfortable use day and night
- No account or sign-up required
- Works 100% offline
- Lightweight and fast
Download now and start building better concentration and mental speed.
Latest updates
1.6.2
What's new in 1.6.2:
- Minor improvements and bug fixes
More from Gunawan Santoso
Kraepelin Test: Pauli & Focus Android
Kraepelin Test: Pauli & Focus is #146 in Education Free on Google Play in Indonesia and charting in 1 of 15 countries we track.
Updated 28 Sep 2026 · rankings refresh through the day
DeveloperMicro App Digital
CategoryEducation
PriceFree
Released
Installs10k+
Rating–
Updated–
Content ratingEveryone
Best rank now
#146
Education FreeMeasured
Kraepelin Test: Pauli & Focus on Google Play
App details
App ID
com.microappdev.tes_kraepelin
Publisher
Micro App Digital
Content rating
Everyone
Kraepelin Test: Pauli & Focus downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Kraepelin Test: Pauli & Focus makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds · 2 ad networks
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| Indonesia | EducationFree | #146 |
Apps near Kraepelin Test: Pauli & Focus on the chart
Education Free, around #146.
About Kraepelin Test: Pauli & Focus
Kraepelin Test is the complete Pauli & aptitude test trainer: practice mental math, focus and concentration to get ready for psychometric, job and recruitment assessments. Build the speed, accuracy and endurance that hiring tests measure — a little every day.
The Kraepelin Test (also known as the Pauli test or "Koran" test) is a classic speed-arithmetic drill used worldwide in psychological and employment assessments. This app turns that drill into a daily habit, with real-time scoring and clear performance insights.
📋 HOW IT WORKS
You see columns of single-digit numbers. Add each pair of adjacent digits and tap only the LAST digit of the sum — as fast and accurately as you can before time runs out. Simple to learn, genuinely challenging to master.
🎯 WHAT IT TRAINS
• Speed — mental arithmetic under time pressure
• Accuracy — precision on long, repetitive calculations
• Consistency — steady focus from start to finish
• Endurance — concentration stamina over long drills
🔥 BUILD A DAILY HABIT
• Streaks that reward you for practicing every day
• Daily goal ring — set 3, 5 or 10 minutes and watch it fill
• Daily Challenge — beat your best score to earn a bonus
• Achievements to unlock as you improve
• History & Trends — track speed, accuracy, consistency and endurance over time
📊 DETAILED RESULTS
• Overall score with a Very Bad → Very Good rating
• Correct, wrong, accuracy % and speed for every session
• Segment-by-segment performance charts
• Deeper Insights: your strongest area, the area to improve, and per-metric rings
• Export any result to PDF and share it
⏱️ REAL EXAM PRACTICE
• Official 11.5-minute and 22.5-minute drills
• Quick 1, 2, 5 and 30-minute sessions, or a custom length
• Horizontal or vertical question layout
• Phone (123) or calculator (789) keypad
✨ MORE
• Works 100% offline — practice anywhere, no internet needed
• Dark mode and accent colors
• Sound & vibration feedback
• English & Indonesian
• No sign-up required — start instantly
👥 PERFECT FOR
• Job seekers preparing for psychometric and aptitude tests
• Students getting ready for company or civil-service entrance exams
• Anyone training focus, concentration and mental math
• Brain-training fans who love a daily cognitive challenge
Remove ads anytime with a one-time Premium upgrade.
Download Kraepelin Test and start building sharper focus, faster mental math and stronger concentration today.
The Kraepelin Test (also known as the Pauli test or "Koran" test) is a classic speed-arithmetic drill used worldwide in psychological and employment assessments. This app turns that drill into a daily habit, with real-time scoring and clear performance insights.
📋 HOW IT WORKS
You see columns of single-digit numbers. Add each pair of adjacent digits and tap only the LAST digit of the sum — as fast and accurately as you can before time runs out. Simple to learn, genuinely challenging to master.
🎯 WHAT IT TRAINS
• Speed — mental arithmetic under time pressure
• Accuracy — precision on long, repetitive calculations
• Consistency — steady focus from start to finish
• Endurance — concentration stamina over long drills
🔥 BUILD A DAILY HABIT
• Streaks that reward you for practicing every day
• Daily goal ring — set 3, 5 or 10 minutes and watch it fill
• Daily Challenge — beat your best score to earn a bonus
• Achievements to unlock as you improve
• History & Trends — track speed, accuracy, consistency and endurance over time
📊 DETAILED RESULTS
• Overall score with a Very Bad → Very Good rating
• Correct, wrong, accuracy % and speed for every session
• Segment-by-segment performance charts
• Deeper Insights: your strongest area, the area to improve, and per-metric rings
• Export any result to PDF and share it
⏱️ REAL EXAM PRACTICE
• Official 11.5-minute and 22.5-minute drills
• Quick 1, 2, 5 and 30-minute sessions, or a custom length
• Horizontal or vertical question layout
• Phone (123) or calculator (789) keypad
✨ MORE
• Works 100% offline — practice anywhere, no internet needed
• Dark mode and accent colors
• Sound & vibration feedback
• English & Indonesian
• No sign-up required — start instantly
👥 PERFECT FOR
• Job seekers preparing for psychometric and aptitude tests
• Students getting ready for company or civil-service entrance exams
• Anyone training focus, concentration and mental math
• Brain-training fans who love a daily cognitive challenge
Remove ads anytime with a one-time Premium upgrade.
Download Kraepelin Test and start building sharper focus, faster mental math and stronger concentration today.