Comparison

Math Kobold vs Fair Marks

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

Head to head
About

Math Kobold

Practice mental arithmetic with a fun, step-by-step game. Solve math problems to progress through levels, defeat opponents, and earn rewards. Supports addition, subtraction, multiplication, and division with adjustable difficulty.

Highlights
  • Step-by-step mental arithmetic training
  • Addition, subtraction, multiplication, division practice
  • Adjustable number ranges and difficulty levels
  • Reward system with stars and gold chests
  • Adaptive problem generator
  • Engaging gameplay with opponents and music
Features
Read full description

Learn quick mental arithmetic step by step with Math Kobold. Fun levels, good music and various rewards create a positive atmosphere for practice and motivate to play again. Join Math Kobold on his journey through the woods and hills and hold off nasty opponents by quickly solving math problems. Before you take off, you choose which kind of problems you want to solve: addition, subtraction, multiplication or division. Then select the number range (up to 10, 20, 50, 100 or 1000) and the Kobold is ready to go. On his journey the Math Kobold meets many creatures that all have one thing in common: He can only pass if he solves the math problem they present. You choose between two possible results by tapping the side of the screen where the correct result appears. And if you ever got one wrong: The Kobold is a tough guy and has more than one life! And at the end of each level a chest of gold is waiting for you and you can advance to the next level or choose a higher speed. So do you think you can make it to the last level with lightning speed? This app has the following motivating features for children in primary school age and beyond: - Supports all basic calculations including multiplication tables - Multiple unlockable difficulty levels provide challenges for all ages and skill levels - The adaptive math problem generator will select easier calculations if you cannot solve some in a row - Random and constant repetition of tasks improves mental arithmetics and times tables skills - The Math Kobold rewards fast selection of results with his legendary 'Yeah'-Move - The more 'Yeah!' moves, the more stars you get for that level - Different gameplay settings and cool music keeps everyone coming back even in times when math is not on top of your list What was important for us when developing the Math Kobold app? 1. Training mental arithmetics and basic math skill should be fun! 2. Create a game that kids would love to play, with math problem solving as the key element to progress in the game. 3. Incorporate the feedback from children (including our own) and parents! 4. Make it challenging enough so that kids really want to work on their math skills. We are happy about any feedback and ideas that you have. Get in touch! Have fun with the Math Kobold on your way to become the fastest mental arithmetics champ on earth (or at least in your neighborhood)!

About

Fair Marks

Streamline your grading process with this intuitive app. Easily manage tests, define flexible grading scales, and track student performance. Keep your data private and save valuable time.

Highlights
  • Manage tests and exams
  • Flexible grade definition
  • Organize students and courses
  • Add remarks quickly
  • Performance overview
  • Offline data storage
  • Optional iCloud sync
Features
Read full description

The easy way to fair grading With Fair Marks, assigning fair grades has never been easier – clear, intuitive, and flexible. Manage tests and exams Always keep track of upcoming and completed exams. For each test, you can define an individual grading system and adjust the evaluation to your needs. Flexible grade definition Sometimes student results don’t match expectations. With Fair Marks, you can easily set thresholds for passing or achieving the top grade, and adapt the grading scale to actual performance levels. Stay fair Adjusting the minimum score required to pass automatically affects all students. This ensures that your grading remains transparent, fair, and consistent – for you and your class. Organize students and courses Manage all students across your courses and get a quick overview of their performance. New tests are automatically assigned to the correct courses. You can archive former students while keeping their performance records available. Add remarks quickly With just a few clicks, add comments on participation – easily during or after class. Changes are possible on the same day, after which your data is locked for protection and consistency. Performance overview at a glance All tests, interim grades, and progress are stored chronologically for each student, giving you a clear basis for final evaluations. Your data belongs to you Student data is sensitive. That’s why you decide whether to use Fair Marks completely offline on your device – with no internet connection required. For secure synchronization across devices, you can optionally use your personal iCloud. We have no access to any of the data you upload there. Save time, grade fairly Since all grading-relevant information is collected in one place, you save valuable time – and can focus on what truly matters. Do you have questions, feedback, or ideas for improvement? We look forward hearing from you at support@fairmarks-app.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Math Kobold4 screens
Fair Marks4 screens

Verdict

The call

The clearest difference is price: Fair Marks at Free against Math Kobold's $3.99. Math Kobold's advantage is in-app purchases (none vs 2) and review sentiment (83% vs 50%). On ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Fair Marks is free to download; Math Kobold costs $3.99 up front. Fair Marks sells 2 in-app purchases, starting at $6.99 per 6 months. Math Kobold asks for nothing beyond the download.

UpkeepUpdate frequency

Math Kobold ships an update monthly, Fair Marks every 10 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

Scorecard5 real differences Β· 3 level
Math Kobold versus Fair Marks: the parameters behind the verdict, then further details
ParameterMath KoboldFair Marks
Price$3.99Free β€” better
Positive reviews83.3% of reviews β€” better50.0% of reviews
Update frequencyMonthly β€” betterEvery 10 months
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationPaidFree with in-app purchases β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS16 β€” better17.0
Further details β€” not scored
Size141 MB9 MB
Age rating4+4+
DeveloperKlebert EngineeringFelix Kampmann

Customer experience

Math Kobold

Written reviews6 reviews
Positive83.3%
Neutral16.7%
Negative0.0%

Fair Marks

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Math Kobold

No in-app purchases

2 purchases

Fair Marks

Subscriptions2
  • Full version (6 months)$6.996 Months
  • Full version (1 year)1 Month trial$12.991 Year

Questions

Is Math Kobold free?
Math Kobold costs $3.99, with no in-app purchases.
Is Fair Marks free?
Fair Marks is free to download, with in-app purchases available.
Do Math Kobold or Fair Marks have ads?
Neither Math Kobold nor Fair Marks shows ads.
Which is updated more often, Math Kobold or Fair Marks?
Math Kobold ships an update monthly, and Fair Marks every 10 months. Most recently, Math Kobold was updated on October 7, 2026 and Fair Marks on October 15, 2026.

Other comparisons