3er
Three cards, one rule: compare color, shape, number and fill. Find matching triples with no timer or lost points, with hints and two game modes. Free for iPhone and iPad or right in your browser, in English or German.
APPSTHRUM
Math games, pulse measurement, word games and more — for iPhone, Mac, Apple TV, Windows and Android. No subscriptions, no ads, no tracking, mostly no account.
14apps on the App Store
3on Google Play
23playable in the browser
12in the works
100%no subscriptions, no ads
App of the Day
A different app from our collection every day.
AFS5.com
Ten math games in one app: addition, subtraction, multiplication, division, fractions, counting money and telling time. In ten languages, no account needed.
In the stores · 14
Built to be used.
ABCTHRUM
Solve riddles and arrange letters into hidden nouns: 404 German words from the Sichtwort app’s German Basic 1000 and 138 English words from Dolch/Fry lists. Four difficulty settings, saved preferences, portrait and landscape. Free on the App Store for iPhone and iPad.
AFS5.com
Ten math games in one app: addition, subtraction, multiplication, division, fractions, counting money and telling time. In ten languages, no account needed.
Brickthrum
A free brick breaker for a quick game: 50 levels, endless mode and power-ups. Play in your browser, on iPhone or on Apple TV, with no ads and no account.
Fallthrum
Playfully through the four German cases: 686 nouns from worterarbeitung.com with read-aloud example sentences, five levels from case detective to case master, mistakes as learning steps. German only.
Heartthrum
Measure your pulse right on your phone. Private, no ads, no cloud, with history and guided breathing exercises.
Hivethrum
A honeycomb word game: seven letters, one mandatory center letter, a new puzzle every day. German and English.
Linkthrum
Free line puzzle: connect matching colored dots and fill every cell. 100 levels, including 50 cube puzzles. Play in your browser with no ads or account.
Spoon Hero
What do I cook that's healthy for my child? 48 family recipes with photos, leftover kitchen, week plan and shopping list, on iPhone and in your browser.
Migo der Pirat
The ABC Island: 8 German alphabet learning games plus a treasure-chest knowledge map, fully voiced — from the German spelling program “Migo, der Pirat” (in German).
Slidethrum
Sliding puzzle game with 26 puzzles from schiebepuzzle.com: classic and gold numbers, letters, animals and Easter. Four sizes from 4 × 4 to 5 × 7, three levels, preview, moves and time, in German and English. Runs as a web app in any browser, offline too. Free on the App Store for iPhone and iPad; the Apple TV app is in testing.
Tangramthrum
Tangram puzzles in three modes: classic with rotating and flipping, the tangram alphabet, or relaxed placing without rotation. 272 figures, every one printable. Free with no ads, playable directly in your browser.
Wordthrum
A word game with a letter wheel and a crossword grid: spin words instead of typing them.
On the web · 10
Right in the browser.
Herr Ober!
A Viennese waiters' textbook of 1899 to read and hear: blackletter or modern script, read-aloud with word highlighting, a word lens with explanations, 53 plates, 14 menus and a chapter on why a dyslexia association made this book. Runs as a web app in any browser – no installation, no account. Book text in German; the iPhone app is on its way.
Der Die Das Thrum
Der, die or das? Look up, practice and understand German articles — with colored syllables and picture anchors. No time pressure, no ads. The iPhone app is in review at Apple.
Arrowthrum
Arrow puzzle with one rule: tap the arrows with a clear path until the board is empty. Endless guaranteed-solvable boards in three difficulties, a daily challenge, paper and neon looks, best times and stats. Runs as a web app in any browser – no install, no account. The iPhone app is coming.
Firethrum
A fireplace for switching off: just watch, just listen, follow your thoughts. Nine scenes as seamless loops – four fireplaces and five Christmas themes – the crackling of the wood and, if you like, quiet music – fullscreen, no goal, no points. Runs as a web app in any browser, offline if you wish. The Apple TV app is in testing.
Grundrechnungsarten
Practice the four basic operations: 36 separate exercises by number range (up to 10, 20, 100, 1000) and times table, ten tasks per round, no time pressure. Made for primary school and for children with dyscalculia; published by the Austrian Dyslexia Association (EÖDL), with a guide and FAQ. Runs as a web app in any browser, can be added to the home screen and works offline. German only.
Mahjongthrum
Mahjong solitaire with the EÖDL tiles: they were developed by the Austrian Dyslexia Association (EÖDL) and show a number and its quantity on one tile. Plus wooden letters and flowers, four layouts with their own portrait and landscape versions, and every game can be solved. Runs as a web app in any browser, offline too. The iPhone, iPad and Apple TV apps are in testing.
Pairthrum
Memory game with 22 card sets from gedaechtnisspiel.com: animals, dinosaurs, space, letters, numbers and quantities, seasons and Christmas. Six to 32 cards, a preview phase, moves and time, in German and English. Runs as a web app in any browser, offline too. The iPhone, iPad and Apple TV apps are in testing.
CALCTHRUM
Five number fields, one final puzzle: find the sum or product in each field. Your five answers form the puzzle in the centre. Choose Plus, Times or Mixed and press Start. The web app is ready to play; the iPhone and iPad app is in testing.
TONETHRUM
Discover low and high tones and turn your own answers into a sound tower. Best with headphones; compare sessions, everything stays on your device. Runs as a web app in any browser, offline if you wish. The iPhone and iPad app is in testing.
EPA608TRAINING
Practice for the EPA Section 608 certification for air-conditioning and refrigeration technicians: 100 questions with explanations for Core and Types I, II and III, 100 flashcards and a study guide. English, Spanish and Ukrainian, offline after the first load; Android APK included.
In the works · 12
On the table.
MazeThrum
coming soon
51 European countries drawn as ribbon mazes: trace the one white strand with a finger or an Apple Pencil until you reach the star on the capital. Every maze can be printed, too. For iPad.
Nailthrum
in testing
Nail art inspiration: 166 nail designs by month, season, holiday and theme, a technique guide with brush know-how, favourites and collections. Fully offline. In the browser ↗
Lexi ABC
in testing
Letter tracing for children aged 2 to 6, with the correct stroke order.
Suchthrum
in testing
Spot the difference: two pictures stacked on top of each other, find the 10 differences — 250 illustrated pairs. For iPad.
Volty Battery
in testing
Battery status at a glance, as an app and as a widget.
Schreibthrum
in testing
Learning to write on the iPad: look at a word, listen to it and trace it with Apple Pencil or a finger – first with stroke-direction arrows and a dotted template, then step by step without. No account, no internet. For iPad.
Recipethrum
in testing
Recipes that are easier to read: import from Safari, text or a photo, cook one step at a time and have it read aloud with word highlighting. Plus a pantry check and shopping list. Everything stays on your device.
Mein Lesebuch
in testing
The 20 stories of the EÖDL reader as an app: picture story, audio version, text in book type and ten questions with answers each, plus a reading window. Free, no ads, offline. In German.
Dyslexia – Questions?
in testing
34 chapters in six topics about dyslexia, five questions with explanations per chapter and a read-aloud function that highlights each spoken word. No ads, no data collection, offline.
Media Didactics – Questions?
in testing
20 chapters from the EÖDL distance course in media didactics, five questions each and read-aloud. For iPhone and iPad, offline, free and ad-free.
1x1-Meister
planned
Practice the times tables, one row at a time.
My Philosophy
Easy to use, fun to use.
For almost 30 years I've worked with people who learn differently. Every app I build starts with one question:
“Can someone with dyslexia use this with ease and enjoy it?”
Mario EngelFounder of EÖDL, DVLD & American Dyslexia Association · Certified dyslexia trainer
What I Focus On
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Accessible by Design
Clear layouts, readable fonts and calm colors, built for people with dyslexia from the very first screen.
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Learning Through Play
Games like Wordthrum and Hivethrum train reading and spelling without feeling like homework.
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Privacy First
No tracking and no ads in children's apps. Your data stays yours.
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One App, One Purpose
Small, fast and focused. Each app does one thing and does it well.