Comparison

Feyn vs OCTO Flashcards

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

Head to head
About

Feyn

Create and review flashcards by drawing with your Apple Pencil or typing. Utilize spaced repetition for effective memorization on your iPhone or iPad. Share decks with friends and sync across devices via iCloud.

Highlights
  • Handwritten flashcard creation with Apple Pencil
  • Spaced repetition learning system
  • Cross-device synchronization via iCloud
  • Flashcard sharing with friends
  • Image and text input options
  • iOS Quick Note and Handoff support
Read full description

Use flashcards, spaced-repetition, and your Apple Pencil to study with Feyn! Taking your own notes by hand and spaced-repetition are the best way to learn new concepts, and with Feyn you can do just that. Open up a book on your iPad and comfortably draw your flashcards right there using your Apple Pencil in Feyn. The flashcards are phone-sized so that you can then take them on the go and comfortably review them on your iPhone! Their vertical shape also makes them easy to write while multi-tasking on your iPad, and perfect for learning languages written top to bottom like Japanese. If you don't feel like drawing, just type some text using your keyboard or drop images into your flashcards. In this way, you *learn* on your iPad as you think of how to you summarize new concepts into flashcards, and *memorize* on your iPhone while you review them on the go! Feyn is fully featured, you can share flashcard to study with your friends. Your flashcards will automatically synchronize between your devices using your iCloud drive. Feyn also supports iOS' Quick Note, Handoff, and keyboard input: type away on your iPad or on our macOS app! Feyn uses spaced repetition to aid in learning. It will ask you to review flashcards depending on how well you recall them, flashcards you miss will be asked more often, and flashcards you get right less often. This way you minimize the total time you spend studying and maximize retention! Feyn Pro ads some nice to have extra features like study charts, to see how well you're learning, and flashcard importing. All other features are free and unrestricted. We guarantee that you will always be able to have a complete study experience for free. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OCTO Flashcards

This app offers a digital solution for studying with flashcards, allowing users to write and draw using an Apple Pencil. It provides organizational tools like folders and color-coding, along with study features to track mastered cards and facilitate quick review sessions. Go paperless and create unlimited study materials without cost.

Highlights
  • Apple Pencil support for writing and drawing
  • Cloud-backed database for card storage
  • Folder organization and color-coding
  • Mastered card tracking
  • Quick study sessions with swipe/tap gestures
  • Unlimited card creation
Read full description

Let OCTO solve the tradeoff between modern technology and traditional flashcard studying! Utilize your Apple Pencil to write or draw anything you need to memorize- no more constraints from text-only flashcards. STAY ORGANIZED * OCTO's cloud-backed database ensures you never lose your flashcards * Keep all your study materials in one place * Group together flashcard sets into folders * Color code your flashcard sets and folders STUDY EFFECTIVELY * Memorize as you create your flashcards by writing out your material * Keep track of cards you have mastered * Choose to study only mastered cards for a challenge or all flashcards for a refresh * Have quick study sessions with our simple swipe or tap gestures GO PAPERLESS * Create unlimited cards without worrying about the costs * Reduce paper waste and your carbon footprint

Screenshots

Feyn4 screens

Verdict

The call

The clearest difference is rating: Feyn at 4.3 against OCTO Flashcards's 2.6. Feyn also leads on ads (none vs shown) and review sentiment (80% vs 54%). OCTO Flashcards's advantage is in-app purchases (none vs 3). On price, update cadence 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. Feyn sells 3 in-app purchases, starting at $5.99 per month. OCTO Flashcards asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Feyn holds the better App Store score, 4.3 against 2.6. That said, the two scores are not equally well evidenced: Feyn has 91 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 80% of Feyn's written reviews are positive against 54% of OCTO Flashcards's.

UpkeepUpdate frequency

Feyn ships an update every 9 days, OCTO Flashcards every 11 days. The most recent releases landed on September 22, 2026 and August 20, 2026 respectively.

Scorecard7 real differences · 3 level
Feyn versus OCTO Flashcards: the parameters behind the verdict, then further details
ParameterFeynOCTO Flashcards
PriceFreeFree
Rating4.3 (91 ratings) — better2.6 (16 ratings)
Positive reviews79.9% of reviews — better53.8% of reviews
Number of ratings91 — better16
Update frequencyEvery 9 days — betterEvery 11 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Mac — betteriPad
Requires iOS16.115.4 — better
Further details — not scored
Size14 MB20 MB
Age rating4+4+
DeveloperJoaquin AloriElaine Kodama

Customer experience

Feyn

All ratings91 ratings
Positive83.5%
Neutral5.5%
Negative11.0%
Written reviews214 reviews
Positive79.9%
Neutral7.9%
Negative12.1%

OCTO Flashcards

All ratings16 ratings
Positive37.5%
Neutral0.0%
Negative62.5%
Written reviews13 reviews
Positive53.8%
Neutral0.0%
Negative46.2%

Bugs and requests

Feyn

Reported bugs

3 issues
  • Cards sometimes disappear after updates
  • App crashes on iOS 16 devices
  • Palm rejection issues when writing

Requested features

6 requests
  • Add option to import/export flashcards
  • Implement more review modes (e.g., front-to-back, back-to-front)
  • Introduce a zoom function for better writing experience
  • Add support for adding images/diagrams to cards
  • Implement nested folder structure for better organization
Show 1 more
  • Provide more customization options for cards (colors, layouts, etc.)

OCTO Flashcards

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Feyn

Subscriptions3
  • Feyn Pro (1 Month)7 Days trial$5.991 Month
  • Feyn Pro (6 Months)7 Days trial$19.996 Months
  • Feyn Pro (1 Year)7 Days trial$29.991 Year
None

OCTO Flashcards

No in-app purchases

Questions

Is Feyn free?
Feyn is free to download, with in-app purchases available.
Is OCTO Flashcards free?
OCTO Flashcards is free to download, with no in-app purchases.
Which has better reviews, Feyn or OCTO Flashcards?
Feyn is rated higher. Feyn averages 4.3 out of 5 from 91 ratings, while OCTO Flashcards averages 2.6 from 16 ratings.
Do Feyn or OCTO Flashcards have ads?
OCTO Flashcards shows ads; Feyn does not.
Which is updated more often, Feyn or OCTO Flashcards?
Feyn ships an update every 9 days, and OCTO Flashcards every 11 days. Most recently, Feyn was updated on September 22, 2026 and OCTO Flashcards on August 20, 2026.

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