Comparison

FlashStacks vs FlipWordy

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

Head to head
About

FlashStacks

Transform study materials into interactive Home Screen widgets. AI generates flashcards from PDFs, and spaced repetition optimizes learning. Visualize concepts with image occlusion and track progress with detailed stats.

Highlights
  • Home and Lock Screen widgets
  • AI-powered PDF to flashcard generation
  • Spaced repetition learning
  • Image occlusion cards
  • Progress tracking and stats
  • Customizable widget themes
Features
Read full description

Your flashcards, on your Home Screen. FlashStacks turns your study cards into Home Screen, Lock Screen and StandBy widgets. Glance at a question between classes. Tap to reveal the answer. Tap again for the next card — all without opening the app. Learning fits into the moments already filling your day. ALWAYS VISIBLE, ALWAYS READY Widgets come in every size and rotate through your stacks automatically, so every time you pick up your phone there's something new to learn. Start a study session and your card follows you to the Lock Screen and Dynamic Island as a Live Activity. AI DECKS FROM YOUR NOTES Upload any PDF — lecture slides, textbook chapters, study guides — and AI builds a complete deck in seconds. Choose High-Yield for exam prep or Comprehensive for full coverage. FlashStacks even finds the diagrams in your PDF so you can turn them into image occlusion cards. LEARN A LANGUAGE FlashStacks Learn gives you ready-made packs in French, Spanish, Japanese, Korean and Mandarin — greetings, numbers, food, travel and more. Add a pack and pick up new words from your Lock Screen all day. SPACED REPETITION THAT WORKS FlashStacks uses the same proven science behind Anki. Cards you struggle with come back sooner. Cards you've mastered fade into the background. Study smarter, not longer. IMAGE OCCLUSION CARDS Add any image — diagrams, anatomy, maps — and draw boxes over the parts to hide. Tap to reveal what's underneath. Perfect for visual subjects. BRING YOUR CARDS WITH YOU Import from Anki, CSV, TSV or JSON. Search every card across all your stacks and keep them organised with tags. BEAUTIFUL BY DESIGN Every stack gets its own colour palette — soft pastels or bold modern tones — and your widgets match. Dark mode uses pure OLED black. TRACK YOUR PROGRESS See mastery, difficulty breakdown and 14-day activity for every stack, plus a study calendar across everything you've learned. Build a streak. Hit your daily goal. FLASHSTACKS PREMIUM Unlock unlimited stacks, AI deck generation from PDF, image occlusion cards and every FlashStacks Learn pack. Free accounts include up to 2 stacks. Monthly and annual plans available. Annual plans include a discounted first month. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FlipWordy

Features
Read full description

Learn a new word every day — the simple, satisfying way. FlipWordy turns building your vocabulary into a daily habit you'll actually keep. Flip a card, hear it spoken, swipe to save what you love, and watch your streak grow. WHY FLIPWORDY • 7,800+ hand-picked words, from everyday A1 to advanced C2 • 4 languages: English, Turkish, German, French — with full translations and example sentences • Audio pronunciation for every word and example • Works offline — your words live on your device LEARN ANYWHERE • Home Screen & Lock Screen widgets — a fresh word at a glance, no need to open the app • Apple Watch app — flip through your deck, hear words, and track your goal right from your wrist • Daily notification brings you a brand-new word at the time you choose STAY MOTIVATED • Set a daily goal that fits your rhythm — casual, focused, or intense • Keep your streak alive and celebrate every milestone • Save favorites to a personal library and review anytime • Export your saved words as a shareable file MADE FOR YOU • Pick your level: beginner, intermediate, or mixed • Light & dark themes • Smart reminders you fully control Start with a few minutes a day. Come back tomorrow. That's how a bigger vocabulary is built — one word at a time. FlipWordy Premium unlocks advanced C1–C2 words and removes all ads. Subscriptions are billed monthly or yearly through your Apple ID. Terms: https://merveylcu.github.io/flipwordy/terms Privacy: https://merveylcu.github.io/flipwordy/privacy

Screenshots

FlashStacks4 screens
FlipWordy4 screens

Verdict

The call

The clearest difference is ads: FlashStacks at none against FlipWordy's shown. FlipWordy's advantage is device support (3 vs 1). On price, update cadence, in-app purchases 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. FlashStacks sells 3 in-app purchases, starting at $4.99 per month and FlipWordy sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FlashStacks ships an update every 8 days, FlipWordy every 5 days. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
FlashStacks versus FlipWordy: the parameters behind the verdict, then further details
ParameterFlashStacksFlipWordy
PriceFreeFree
Rating4.6 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 8 daysEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.617.0 — better
Further details — not scored
Size11 MB32 MB
Age rating4+4+
DeveloperBailey SkewesMERVE PEKYUREK

In-app purchases

3 purchases

FlashStacks

Subscriptions3
  • FlashStacks Premium — Monthly$4.991 Month
  • Premium Special Offer$24.991 Year
  • FlashStacks Premium — Annual1 Month trial$39.991 Year
2 purchases

FlipWordy

Subscriptions2
  • Premium Monthly7 Days trial$2.991 Month
  • Premium Annual7 Days trial$29.991 Year

Questions

Is FlashStacks free?
FlashStacks is free to download, with in-app purchases available.
Is FlipWordy free?
FlipWordy is free to download, with in-app purchases available.
Do FlashStacks or FlipWordy have ads?
FlipWordy shows ads; FlashStacks does not.
Which is updated more often, FlashStacks or FlipWordy?
FlashStacks ships an update every 8 days, and FlipWordy every 5 days. Most recently, FlashStacks was updated on October 31, 2026 and FlipWordy on October 31, 2026.

Other comparisons