Comparison

Knowia vs CardFlip

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

Head to head
About

Knowia

Read full description

Knowia is a modern learning app designed to help you retain information long-term using flashcards and spaced repetition (SRS). Discover ready-made study decks or create your own custom cards. With our intuitive swipe-based system, your learning process becomes fast, simple, and highly effective. What Can You Do? • Engage in active learning with flashcards • Build long-term memory via spaced repetition (SRS) • Create and customize your own study decks • Organize your decks by category • Keep your cards private or share them with the community • Discover and study decks created by other users • Bulk import cards quickly using CSV • Break down massive decks into manageable chapters • Enjoy a fast, swipe-based learning experience Who Is It For? • Language learners • Students preparing for exams • Anyone wanting to explore and learn new topics • People looking to review and memorize information regularly Start learning smarter and more efficiently with Knowia. Support: https://www.knowia.online Privacy Policy: https://www.knowia.online/policy Terms of Use: https://www.knowia.online/terms

About

CardFlip

Create custom flashcards with spaced repetition to optimize your study schedule. Supports multiple study modes, including quizzes and typing answers, with options for adding images and audio. Study offline and track your progress with daily streaks and achievements.

Highlights
  • Custom flashcard creation
  • Spaced repetition study planning
  • Multiple study modes (flip, quiz, match, type)
  • Add images and audio to cards
  • Offline study functionality
  • Progress tracking and achievements
  • Import/export flashcard decks
Features
Read full description

Make your own flashcards and let spaced repetition plan what to review each day. CardFlip keeps everything on your phone: there is no account to make, and studying works offline. FOUR WAYS TO STUDY • Flip Cards: the card turns over; rate it from Again to Easy and see when it comes back • Quiz: multiple choice, built from your own cards • Match Game: pair each front with its back, against the clock • Type Answer: write the answer from memory; accents and capitals don't count against you SPACED REPETITION PLANS YOUR DAY • Each card comes back when it is time to review it, not before • A few minutes a day instead of a night of cramming • Every deck shows how many cards are due today PICTURES ON CARDS • Add a picture to either side, from the camera or your photo library • A map, a diagram, a face to put a name to: the picture shows in Flip Cards, Quiz and Type Answer LISTEN • Hear a side read aloud in the deck's language, with your phone's own voices • Have each card read aloud as you study, at the speed you like STUDY BOTH WAYS • Ask the front first, the back first, or both ways, deck by deck • Type Answer then has you write the front as well IMPORT YOUR CARDS • Paste a list exported from another flashcard app, or open a plain-text or CSV file • Check the preview, swap front and back if you need to, and choose the deck STARTER DECKS • Six ready-made decks to start right away: Spanish basics, German basics, Hiragana, English irregular verbs, world capitals and the first 20 elements • The answers come in your app's language WATCH YOUR PROGRESS • A daily streak, and your best one • XP for every card you study • Achievements as your decks grow • A weekly chart of the minutes you put in • A progress ring on every deck YOUR DECKS STAY YOURS • No account to make: your decks stay on your phone • Studying works offline, on a plane or on the subway • Export a deck as JSON or CSV, or back up all your decks in one file CARDFLIP PRO • One payment, yours for good • Stats: the next 30 days of reviews, how well each deck sticks, and your hardest cards • Linen, Chalk and Night card styles • Match Game and Type Answer right away • Pictures, Listen, both-ways study, import and the starter decks stay free for everyone Learning a language, preparing for an exam or memorizing terms for class? Make the cards, and CardFlip plans the review.

Screenshots

Knowia4 screens
CardFlip4 screens

Verdict

The call

The clearest difference is in-app purchases: Knowia at none against CardFlip's 1. CardFlip's advantage is update cadence (every 3 weeks vs every 2 months). 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. CardFlip sells 1 one-off in-app purchase. Knowia asks for nothing beyond the download.

UpkeepUpdate frequency

Knowia ships an update every 2 months, CardFlip every 3 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Knowia versus CardFlip: the parameters behind the verdict, then further details
ParameterKnowiaCardFlip
PriceFreeFree
Rating—3.5 (4 ratings) — better
Positive reviews—75.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size49 MB70 MB
Age rating4+4+
DeveloperArda Berkay BAGIMGunawan Santoso

In-app purchases

None

Knowia

No in-app purchases

1 purchases

CardFlip

One-time1
  • CardFlip Pro$6.99

Questions

Is Knowia free?
Knowia is free to download, with no in-app purchases.
Is CardFlip free?
CardFlip is free to download, with in-app purchases available.
Do Knowia or CardFlip have ads?
Neither Knowia nor CardFlip shows ads.
Which is updated more often, Knowia or CardFlip?
Knowia ships an update every 2 months, and CardFlip every 3 weeks. Most recently, Knowia was updated on October 31, 2026 and CardFlip on November 5, 2026.

Other comparisons