Comparison

FlipShadow vs WordDeck

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

Head to head
About

FlipShadow

Features
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Learn Languages Through Sentence Memorization Memorizing words alone won't help you speak. Studying grammar doesn't guarantee fluency in real conversations. Why? Because you haven't trained your brain to "retrieve" sentences. This app combines flashcard retrieval training with a scientific spaced repetition algorithm to make memorized sentences come out naturally in conversation. β–  Key Features β–Έ Flashcard Retrieval Training Practice retrieving sentences from your brain. Memorized sentences will automatically come out in real conversations. β–Έ Scientific Spaced Repetition Algorithm (Anki-style) Automatically calculates your optimal study schedule for efficient memorization. Review at the perfect timing based on the forgetting curve. β–Έ Choose Your Own Sentences Memorize only the sentences you'll actually use. Build personalized learning decks for your specific needs. β–Έ Learning Statistics & Progress Tracking Monitor your learning status with detailed statistics. See at a glance how much you've memorized and retained. β–Έ iCloud Sync Study seamlessly across iPhone, iPad, and Mac. Your learning progress syncs automatically across all devices. β–Έ CSV File Import Easily import your own learning materials via CSV files. Materials created in Excel or Google Sheets work instantly. β–  Perfect For - Those who know words but can't speak - Those who studied grammar but struggle in real conversations - Anyone who wants to memorize efficiently - Anki users who found it too complex - Learners who want to choose only useful sentences β–  Why Memorize Sentences? Word memorization: "apple" = apple β†’ "I ate an apple" doesn't come out automatically in conversation Sentence memorization: "I ate an apple yesterday" β†’ The entire sentence comes out naturally when the situation arises When you memorize sentences, grammar, word order, and expressions stick together as chunks. This is real speaking ability. β–  What is Spaced Repetition? A method of reviewing at optimal intervals based on the human forgetting curve. - After 1 day β†’ 3 days β†’ 7 days β†’ 14 days... Repeating with increasing intervals converts information into long-term memory. The app automatically calculates "today's review cards," so you just need to open the app and study every day. β–  Start Now Experience memorized sentences coming out naturally. Enjoy the pleasure of efficient memorization through scientific methods. Start now. - Terms of use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

WordDeck

Features
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You learned that word yesterday. Today? Blank. WordDeck is a flashcard app that makes things stick β€” designed for adults with no time to waste. No ads. No clutter. Just focus. β€’ Smart scheduling Cards show up right when you're about to forget. Less cramming, more retaining. β€’ Quick & flexible Tap through cards at your own pace. Works both ways β€” front-to-back or back-to-front. β€’ Made for grown-ups A calm, clean interface. No streaks to protect, no coins to collect. β€’ Widget review Study right from your home screen without opening the app. β€’ 5 minutes a day Short sessions that actually add up over time. Who it's for: β€’ Picking up a new language β€’ Prepping for an exam β€’ Tried flashcard apps before and quit β€’ Want results, not rewards Five minutes. Every day. That's it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

FlipShadow4 screens
WordDeck4 screens

Verdict

The call

The clearest difference is device support: FlipShadow at 3 against WordDeck's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. FlipShadow sells 1 one-off in-app purchase and WordDeck sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FlipShadow ships an update every 6 days, WordDeck every 2 weeks. Both last shipped on October 28, 2026.

Scorecard1 real difference Β· 5 level
FlipShadow versus WordDeck: the parameters behind the verdict, then further details
ParameterFlipShadowWordDeck
PriceFreeFree
Update frequencyEvery 6 days β€” betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac β€” betteriPhone
Requires iOS17.616.0 β€” better
Further details β€” not scored
Size4 MB7 MB
Age rating4+4+
DeveloperJong Seon Leeζ ͺ式会瀾γ‚ͺポチγƒ₯ニティ

In-app purchases

1 purchases

FlipShadow

One-time1
  • Lifetime Subsription$9.99
2 purchases

WordDeck

Subscriptions2
  • γƒ—γƒ¬γƒŸγ‚’γƒ γƒ—γƒ©γƒ³οΌˆζœˆι‘οΌ‰$4.991 Month
  • γƒ—γƒ¬γƒŸγ‚’γƒ γƒ—γƒ©γƒ³οΌˆεΉ΄ι‘οΌ‰$29.991 Year

Questions

Is FlipShadow free?
FlipShadow is free to download, with in-app purchases available.
Is WordDeck free?
WordDeck is free to download, with in-app purchases available.
Do FlipShadow or WordDeck have ads?
Neither FlipShadow nor WordDeck shows ads.
Which is updated more often, FlipShadow or WordDeck?
FlipShadow ships an update every 6 days, and WordDeck every 2 weeks. Most recently, FlipShadow was updated on October 28, 2026 and WordDeck on October 28, 2026.

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