# Card2Memory > Leitner system flashcard app for text, audio, image, and PDF learning. (iPhone/iPad app by Karl-Heinz Loch.) - Source: https://appshunter.io/ios/app/card2memory/id1003066716 (this page in markdown: same URL + `.md`) - Developer: [Karl-Heinz Loch](https://appshunter.io/developer/909594001) - Category: Education, Productivity - Price: Free with in-app purchases - Rating: 1.00/5 from 3 App Store ratings · 7 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 137 MB - Languages: American English, German (Germany) - Released: 2016-01-16 - Data updated: 2026-06-30 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/card2memory/id1003066716/reviews.md ## What is Card2Memory? Card2Memory is a flashcard tool that follows the Leitner system with 5 boxes and optimizes your learning process. On the front and back of a card, you can enter a question and answer in the form of plain text, audio files, or pictures. In addition, you can insert (cropped) PDF files via iCloud as formatted text. This way, you can also use text that has been generated with a formula editor. With a high-contrast black and white photo of a two-columned vocabulary list, the corresponding flashcards can be produced automatically via text recognition. You can import CSV files (with , or ; as a separator) saved in iCloud Drive or C2M files that you received as e-mail attachments. New cards will always be put into box 1. While learning, the cards can be flipped with a simple tap or a swipe left/right gesture. Swipe the cards that you answer right upwards into the next higher box. If the answer is wrong, swipe the card down, back into the first box When a card holds up to the check in the fifth box, it is removed from the system. For reverse learning (especially when learning vocabulary) you can flip the whole stack of cards over. You can save the actual state of a flashcard and later retrieve it again. The flashcards you created can be sent to other users via e-mail (see above). Icons from https://icons8.com ## Key features - Leitner system with 5 boxes - Text, audio, image, and PDF card content - Automatic card creation from vocabulary lists - CSV and C2M file import - Reverse learning option - Save and retrieve flashcard states ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 10 additional flashcards | $0.99 | one-time | | any number of flashcards | $2.99 | one-time | | any numer of flashcards from 11 | $1.99 | one-time | ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/card2memory/id1003066716/reviews.md ### 5/5 — Tolle App, sehr guter Support ! *2024-06-17, version 5.1* Die App tut genau was sie soll. Entwickler reagiert schnell und konstruktiv auf Fragen ! ### 1/5 — Keyboard mode is useless *2020-12-11, version 3.0* The color of fonts is white and the background is white too so it's useless ### 3/5 — Sehr gute Ansätze, aber... *2020-11-12, version 3.0* Sehr gute Grundidee, was die generelle Darstellung der einzelnen Karten betrifft und ebenso die Integration der Methode der 5 Boxen. Leider sind die Karten nur für kurze Begriffe, wie Vokabeln oder Kurze Formeln geeignet. Je länger die einzutragenden Texte (z.B. Definitionen mit mehreren Aspekten) desto unkomfortabler ist die Darstellung aber auch die Eintragung selbst (Tastatur verdeckt Text, etc.). Die Freihandnutzung funktioniert leider ebenso nur bei kurzen Texten, da mit jeder Stiftberührung (-> quasi jeder Buchstabe bei Druckschrift) die vorherigen Eintragungen unschärfer werden. Die App ist demnach noch ausbaufähig und währe dann auch für meine Zwecke (Studium) geeignet. ### 4/5 — Sehr gut *2020-09-17, version 3.0* Super zum Lernen. Seit kurzem jedoch lässt sich beim Fach 1 nicht lernen. Wenn ich auf lernen drücke stürzt die App ab. Wäre super wenn das behoben wird. ### 1/5 — Crashes *2020-08-24, version 2.2* This app has a really great design and features but it crashes so much and after each crash I loss my notes ### 4/5 — Lernkarteikarten selbst schreiben *2019-08-22, version 1.3.1* Wie ich mir das vorgestellt habe. Es dient einfach zum Lernen, man kann sehr einfach die Karteikarten selber beschriften. Einziger Nachteil: ich bin noch nicht daraufgegossen, wie ich eine bereits erstellte Karte ergänzen/bearbeiten kann. ### 4/5 — Good app *2016-03-04, version 1.1.1* It's a good app , but "import from csv" always has error "incorrect format " ## Frequently asked questions about Card2Memory ### How does Card2Memory use the Leitner system? Card2Memory employs a 5-box Leitner system. New cards start in box 1. Correctly answered cards move to higher boxes, while incorrect answers return to box 1. Cards reaching the fifth box are removed from the system. ### What types of content can I add to Card2Memory flashcards? You can add plain text, audio files, pictures, and even formatted text from PDF files (including those generated with formula editors) to your flashcards. ### Can I import existing study materials into Card2Memory? Yes, you can import CSV files (using ',' or ';' as separators) saved in iCloud Drive. You can also import C2M files received via email attachments. ### Does Card2Memory support learning vocabulary in reverse? Yes, Card2Memory offers a reverse learning option, which is particularly useful for vocabulary study. This allows you to flip the entire stack of cards for a different learning perspective. ### How can I share my flashcards with others using Card2Memory? You can send the flashcards you create to other users via email. This feature allows for easy collaboration and sharing of study materials. ### What devices is Card2Memory compatible with? Card2Memory is available on Mac, iPhone, iPad, and iPod. This broad compatibility ensures you can study across multiple Apple devices. ### How often is Card2Memory updated? The app was last updated on February 5, 2026, indicating recent development activity. The latest version is 6.2. ### What is the user sentiment for Card2Memory based on ratings? Card2Memory has a rating of 1.0 stars from 3 ratings. This suggests a very low user satisfaction based on the available feedback. ## Version history (last 5 releases) ### 6.2 — 2026-02-05 This update fixes a bug in setting the test days and prevents the program crash when learning and correctly answering a card from box 5. ### 6.1 — 2026-01-26 This update fixes the error caused by not taking into account a special feature of iOS26. ### 6.0 — 2026-01-21 With this update, the app can be tested for 7 days without any restrictions. After the trial period expires, the following restrictions apply: No further files or cards can be created, no data can be imported from CSV files
 and the learning mode cannot be activated. Any in-app purchases already made can of course be restored. ### 5.1 — 2024-06-08 This update • fixes an error in the price information for the purchase options. • extends the editing options of the index cards by adding a CSV file as an attachment when sending a card file by e-mail. ### 5.0 — 2024-01-28 Previously, only CSV files with the usual line break with CR (carriage return) for macOS up to version 9 could be used for data import. In this version, CSV files can now also be used in which line breaks with CR+LF (Carriage Return + Line Feed, as they occur during CSV export from Excel) or pure LF, which is common under Unix/Linux and newer macOS versions. ## Apps similar to Card2Memory | App | Rating | Price | Category | | --- | --- | --- | --- | | [Flashcards Deluxe Lite](https://appshunter.io/ios/app/flashcards-deluxe-lite/id307842418) | 4.8 (5) | Free | Education | | [Flashcards Made Simple](https://appshunter.io/ios/app/flashcards-made-simple/id1496147001) | 1.0 (2) | Free | Education | | [Hear2Rise](https://appshunter.io/ios/app/hear2rise/id1162237802) | 4.0 (3) | Free | Education | | [iStackz](https://appshunter.io/ios/app/istackz/id918620482) | — | Free | Education | | [FlashCardGenAI](https://appshunter.io/ios/app/flashcardgenai/id6749487282) | — | Free | Education | | [RememberMe by Flashcards](https://appshunter.io/ios/app/rememberme-by-flashcards/id1615879618) | — | Free | Education | ## More apps by Karl-Heinz Loch - [LoCAD](https://appshunter.io/ios/app/locad/id909593998) - [LoCAD Lite](https://appshunter.io/ios/app/locad-lite/id912211392) - [Twist.It](https://appshunter.io/ios/app/twistit/id951343823) - [EqualizeMusic](https://appshunter.io/ios/app/equalizemusic/id6503642121) All apps by Karl-Heinz Loch: https://appshunter.io/developer/909594001 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-30.*