Comparison

Stacks vs Cortx

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

Head to head
About

Stacks

Create flashcards from your own experiences and conversations. This app uses spaced repetition to help you remember vocabulary longer with less study. It supports over 100 languages and offers offline study capabilities.

Highlights
  • Create cards from stories and conversations
  • Spaced repetition system (FSRS)
  • Offline study mode
  • Automatic translations
  • Supports over 100 languages
  • Romanization for select scripts
  • Clean, minimal interface
Features
Read full description

Your stories are better. Life's too short to cram from borrowed lists. Stacks turns trips and conversations into cards, then spaced-repetition (FSRS) handles the science. Episodic memory meets spaced repetition. Dream team. Benefits: β€’ Keep momentum anywhere – Study offline on flights, trains, or dead zones. β€’ Stay in sync across devices – Your progress follows you automatically. β€’ Focus without distractions – No ads, just learning. β€’ Create cards in seconds – Automatic translations speed up card creation. β€’ Learn with clearer meanings – Premium DeepL translations offer high accuracy and context. β€’ Remember longer with less study – FSRS schedules reviews at the right time. β€’ Learn the language you care about – Supports over 100 languages. β€’ Crack non-Latin scripts faster – Romanization for select languages like Japanese, Arabic, Russian, and Hindi. β€’ Feel calm while you study – A clean, minimal interface that gets out of the way. Free and Plus Create up to 40 cards for free. Upgrade to Stacks Plus for unlimited cards, DeepL translations, spaced repetition customisation, and more. Perfect for language learners, students, and polyglots who want to study offline, master vocabulary, and remember more with flashcards. Privacy Policy: https://www.thestacksapp.com/privacy Terms of Service: https://www.thestacksapp.com/terms-of-service EUSA: https://www.apple.com/legal/internet-services/itunes/dev/minterms/

About

Cortx

Features
Read full description

Create flashcards, review them at the right time, and build long-term retention without wasting hours rereading your notes. Whether you're studying vocabulary, preparing for an exam, or organizing your learning routine, Cortx keeps your study sessions simple, focused, and effective. LEARN SMARTER, NOT HARDER - Create unlimited flashcards in seconds - AI-powered suggestions to complete your collections faster - Study vocabulary, concepts, formulas or facts - Perfect for school, exams, languages, or self-learning - Stay consistent with a clear daily study flow TAKE A PHOTO OF A TEXT AND GENERATE QUESTIONS INSTANTLY Take a photo of any text β€” notes, books, or documents Let AI automatically generate relevant questions from it Turn real-world content into ready-to-use flashcards in seconds Save time and focus on understanding instead of manual creation BUILT FOR REAL MEMORY RETENTION - Smart review timing based on spaced repetition - Leitner-style learning system - Track your progress and memory strength - Focus on what you actually need to review PLAN AND TRACK YOUR LEARNING - Turn your cards into a simple study planner - Review sessions adapted to your schedule - See what’s due today and keep momentum ADD AN IPHONE WIDGET - Add a widget to your home screen - A random card appears every minute β€” learn passively throughout your day - Turn idle moments into micro study sessions Cortx is designed for students, language learners, and anyone who wants to remember more with less effort. Start building your memory today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Stacks4 screens
Cortx4 screens

Verdict

The call

The clearest difference is update cadence: Cortx at every 9 days against Stacks's every 3 months. On price, ads, in-app purchases and device support 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. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months and Cortx sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Stacks ships an update every 3 months, Cortx every 9 days. The most recent releases landed on October 16, 2026 and October 20, 2026 respectively.

Scorecard1 real difference Β· 7 level
Stacks versus Cortx: the parameters behind the verdict, then further details
ParameterStacksCortx
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 3 monthsEvery 9 days β€” better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumβ€”
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS16.415.6 β€” better
Further details β€” not scored
Size77 MB29 MB
Age rating4+4+
DeveloperLewis HoyHenri Delozanne

In-app purchases

2 purchases

Stacks

Subscriptions2
  • Stacks+ Quarterly$9.993 Months
  • Stacks+ Yearly$27.991 Year
3 purchases

Cortx

Subscriptions2
  • Pro Monthly$2.991 Month
  • Pro Monthly (Free Trial)7 Days trial$2.991 Month
One-time1
  • Memo Pro Lifetime$69.99

Questions

Is Stacks free?
Stacks is free to download, with in-app purchases available.
Is Cortx free?
Cortx is free to download, with in-app purchases available.
Do Stacks or Cortx have ads?
Neither Stacks nor Cortx shows ads.
Which is updated more often, Stacks or Cortx?
Stacks ships an update every 3 months, and Cortx every 9 days. Most recently, Stacks was updated on October 16, 2026 and Cortx on October 20, 2026.

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