Comparison

FlashMath (math flash cards) vs Grammar Challenge

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

Head to head
About

FlashMath (math flash cards)

This app offers a fun and configurable way to practice math skills. It covers basic arithmetic to multiplication and division, with adjustable difficulty and time limits. Ideal for all ages seeking to improve their math fluency or get a quick mental workout.

Highlights
  • Addition and subtraction practice
  • Multiplication and division practice
  • Configurable number ranges
  • Adjustable number of questions
  • Optional time limits per question
  • Suitable for all ages
Features
Read full description

FlashMath is a fun math learning tool for your iPhone. FlashMath is appropriate for all ages from kindergarten (with simple addition and subtraction problems) to elementary school where learning multiplication and division can be a challenge. FlashMath is also great for a quick little brain exercise. FlashMath is configurable from simple addition and subtraction to more complicated multiplication and division. You can control the range of numbers you want to work with, the number of questions you want to answer and even assign a time limit per question.

About

Grammar Challenge

This educational game makes practicing English grammar and spelling enjoyable. It offers various game modes to reinforce understanding of parts of speech, tenses, and sentence structures through matching exercises. Designed for learners of all levels, it boosts concentration and provides a fun way to prepare for lessons.

Highlights
  • Grammar and spelling practice
  • Matching game modes
  • Adjustable difficulty
  • Selectable grammar areas
  • Reward system
  • Concentration boosting
Features
Read full description

This entertaining and educational matching game app helps you practice your English grammar and spelling in a fun way. Whether you need to brush up on parts of speech, conjugation or declination, tenses and types of sentences - no matter what you need, the various grammatical areas can be combined with each other and practiced. With one click, the appropriate themes are chosen, easy as pie, and you can start right away. Matching pairs must be found, either by purely assigning terms to the proper categories (funny = Adjectives | I would like to play = Futur 1) or as a concentration-enhancing matching game. THE GRAMMAR CHALLENGE HELPS YOU PRACTICE YOUR KNOWLEDGE IN A FUN WAY Both the number of card pairs and the number of players are, of course, variable. Depending on your wishes, the cards can be read aloud, and the length of time in which the cards are revealed is adjustable. The difficulty level of the app increases with the number of card pairs and the chosen area of grammar. It is aimed at all students who are not yet entirely comfortable in their use of grammatical terms or who want to practice for their next grammar lesson in a fun way. You can also work on improving your spelling. STRONG MOTIVATION TO LEARN GRAMMAR On your own in a race against time or against a challenging opponent - who will use the fewest number of moves to find the matching pairs? Who will collect the most stars and end up the winner in this grammatical duel? The beautiful visual presentation of the playing cards, the acoustic sounds of success, the pleasing voice that reads aloud, the game variations, the pedagogically sophisticated content and the strict limitations of only relevant content make this app a truly worthwhile learning aid. The Grammar Challenge makes learning grammar fun! PEDAGOGICAL BENEFITS OF THE APP: • Self-explanatory • Concentrates on the content without distractions • Motivates with a reward system • Practice mode • Boosts concentration skills • Selectable levels of difficulty • Selectable number of card pairs • Selectable read-aloud function • Selectable areas of grammar • “Assignable” game variations • Beautiful, relevant graphics • No in-app purchases • No online connection necessary • Learning psychology tested and approved TECHNICAL AND PEDAGOGICAL KNOW-HOW COME TOGETHER IN THE GRAMMAR CHALLENGE The idea for this app with regard to its content was created by licensed pedagogue Uta Reimann-Höhn (www.lernfoerderung.de), who has published numerous books as an expert on education and upbringing, and who has been the editor-in-chief of “Lernen und fördern mit Spaß!” (“Learn and Grow with Fun!”) since 2006. The idea was implemented by Jan Essig (www.janessig.com), a designer who has made a name for himself with his high-quality educational apps “Adventure Playground” and “Preschoolers ABC Playground” and has won numerous awards. The English voice recordings and translation were provided by Tom Harris (www.mrtomharris.com). The English grammar was advised on by Roger Griffin and Kate Griffin (www.kategriffin.info), who is a freelance copy writer and editor.

Screenshots

FlashMath (math flash cards)4 screens
Grammar Challenge4 screens

Verdict

The call

The clearest difference is review sentiment: FlashMath (math flash cards) at 70% against Grammar Challenge's 0%. FlashMath (math flash cards) also leads on monetization model (free vs paid) and update cadence (every 6 months vs every 15 months). 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

FlashMath (math flash cards) costs $0.99 and Grammar Challenge $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

FlashMath (math flash cards) ships an update every 6 months, Grammar Challenge every 15 months. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
FlashMath (math flash cards) versus Grammar Challenge: the parameters behind the verdict, then further details
ParameterFlashMath (math flash cards)Grammar Challenge
Price$0.99$0.99
Rating4.4 (48 ratings) — better—
Positive reviews69.7% of reviews — better0.0% of reviews
Number of ratings48 — better—
Update frequencyEvery 6 months — betterEvery 15 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.012.0
Further details — not scored
Size3 MB15 MB
Age rating4+4+
DeveloperPalaSoftware Inc.Jan Essig

Customer experience

FlashMath (math flash cards)

All ratings48 ratings
Positive85.4%
Neutral4.2%
Negative10.4%
Written reviews33 reviews
Positive69.7%
Neutral12.1%
Negative18.2%

Grammar Challenge

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

FlashMath (math flash cards)

No in-app purchases

None

Grammar Challenge

No in-app purchases

Questions

Is FlashMath (math flash cards) free?
FlashMath (math flash cards) costs $0.99, with no in-app purchases.
Is Grammar Challenge free?
Grammar Challenge costs $0.99, with no in-app purchases.
Do FlashMath (math flash cards) or Grammar Challenge have ads?
Neither FlashMath (math flash cards) nor Grammar Challenge shows ads.
Which is updated more often, FlashMath (math flash cards) or Grammar Challenge?
FlashMath (math flash cards) ships an update every 6 months, and Grammar Challenge every 15 months. Most recently, FlashMath (math flash cards) was updated on September 19, 2026 and Grammar Challenge on September 21, 2026.

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