Comparison

Card2Memory vs Study Penguin

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

Head to head
About

Card2Memory

This flashcard tool utilizes the Leitner system to optimize learning. Create cards with text, audio, images, or even PDF content. It supports automatic card creation from vocabulary lists and import options for CSV and C2M files.

Highlights
  • 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
Features
Read full description

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. Data from CSV files (with ; or , as a separator) can be imported into the current flashcard. A flashcard can be saved and loaded as a file with the suffix c2m. When editing flashcards, you can create backup copies to save your work in progress quickly. Because new cards will always be put into box 1, they can only be created if box 1 is selected. 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 share the flashcards you have created with other users by email or via saved c2m files. Corrections or changes to existing cards can be made after tapping the corresponding card in the table view.

About

Study Penguin

Read full description

Study Penguin — Your All-in-One Study Companion Everything you need to study smarter, all in one app. Study Penguin combines time tracking, task management, spaced repetition flashcards, Pomodoro timer, and daily to-do lists into a single, beautifully designed experience. Whether you're preparing for exams, learning a new skill, or building daily study habits, Study Penguin keeps you focused, organized, and motivated. KEY FEATURES — Study Timer & Pomodoro — Track every minute of your study sessions with precision. Choose between a flexible stopwatch, countdown timer, or structured Pomodoro technique with customizable focus and break intervals. Ambient background sounds — rain, classroom, brown noise, pencil writing, simmering pot, and underwater — help you stay in the zone. — Smart To-Do Lists — Plan your day with purpose. Set up to 3 daily tasks, 2 challenge goals that push your limits, and 2 "Not To-Do" items to eliminate distractions. Your morning flow guides you through goal-setting each day, keeping your intentions clear and actionable. — Flashcards with Spaced Repetition — Create rich flashcards with text, images, and audio. Our spaced repetition algorithm schedules reviews at optimal intervals so you remember more with less effort. Track mastery levels and watch your knowledge grow over time. — Subject & Task Management — Organize your studies by subject and track time spent on each. Review history shows exactly when and how long you studied, making it easy to identify gaps and balance your workload. — Daily News & Motivation — Start each day with a personalized study newspaper featuring your progress, achievements, and an editorial space for reflection. Look back on past editions to see how far you've come. — Detailed Records & Analytics — Visualize your study patterns with daily, weekly, and monthly breakdowns. See your streaks, total hours, and subject distribution at a glance. Data-driven insights help you optimize your routine. — iCloud Sync — Seamlessly sync all your data across devices. Switch between iPhone and iPad without losing a single flashcard, study session, or achievement. — Calming Design — A clean, distraction-free interface with light and dark modes. Study Penguin is designed to feel like a trusted companion — always there when you need it, never in the way. Study Penguin is built for every learner: students preparing for university entrance exams, professionals studying for certifications, language learners building vocabulary, and anyone who believes in the power of consistent daily effort. Download Study Penguin today and transform the way you study.

Screenshots

Card2Memory4 screens
Study Penguin4 screens

Verdict

The call

The clearest difference is in-app purchases: Study Penguin at none against Card2Memory's 3. Study Penguin also leads on update cadence (daily vs fortnightly). On price, ads, device support and iOS requirement 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

Both are free to download. Card2Memory sells 3 one-off in-app purchases. Study Penguin asks for nothing beyond the download.

UpkeepUpdate frequency

Card2Memory ships an update fortnightly, Study Penguin daily. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 8 level
Card2Memory versus Study Penguin: the parameters behind the verdict, then further details
ParameterCard2MemoryStudy Penguin
PriceFreeFree
Rating1.0 (3 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings3 — better—
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size1 MB38 MB
Age rating4+4+
DeveloperKarl-Heinz LochRei Minamida

In-app purchases

3 purchases

Card2Memory

One-time3
  • 10 additional flashcards$0.99
  • any numer of flashcards from 11$1.99
  • any number of flashcards$2.99
None

Study Penguin

No in-app purchases

Questions

Is Card2Memory free?
Card2Memory is free to download, with in-app purchases available.
Is Study Penguin free?
Study Penguin is free to download, with no in-app purchases.
Do Card2Memory or Study Penguin have ads?
Neither Card2Memory nor Study Penguin shows ads.
Which is updated more often, Card2Memory or Study Penguin?
Card2Memory ships an update fortnightly, and Study Penguin daily. Most recently, Card2Memory was updated on November 1, 2026 and Study Penguin on November 10, 2026.

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