Comparison

Stacks vs Pass

Price, ratings, monetisation and update history for both apps, side by side โ€” 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: โ€ข Keep momentum anywhere โ€“ Study offline on flights, trains, or dead zones. โ€ข Stay in sync across devices โ€“ Your progress follows you automatically. โ€ข Focus without distractions โ€“ No ads, just learning. โ€ข Create cards in seconds โ€“ Automatic translations speed up card creation. โ€ข Learn with clearer meanings โ€“ Premium DeepL translations offer high accuracy and context. โ€ข Remember longer with less study โ€“ FSRS schedules reviews at the right time. โ€ข Learn the language you care about โ€“ Supports over 100 languages. โ€ข Crack non-Latin scripts faster โ€“ Romanization for select languages like Japanese, Arabic, Russian, and Hindi. โ€ข Feel calm while you study โ€“ 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

Pass

Features
Read full description

Pass helps you go from raw study material to exam-ready revision in minutes. Create faster Generate flashcards with AI from notes, images, PDFs, DOCX, and text files Or create cards manually for full control Organize sets with folders and merge tools Study smarter Flashcards mode for quick active recall AI Match and AI Test modes for focused practice AI Quiz Me mode for guided, one-question-at-a-time revision AI Buddy mode for explanations and concept clarification Track progress See mastery, weak cards, due cards, and accuracy Revisit difficult cards and improve over time Pass is designed for students who want fast setup, structured revision, and better retention.

Screenshots

Stacks4 screens
Pass4 screens

Verdict

The call

The clearest difference is in-app purchases: Pass at none against Stacks's 2. On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months. Pass asks for nothing beyond the download.

Scorecard1 real difference ยท 7 level
Stacks versus Pass: the parameters behind the verdict, then further details
ParameterStacksPass
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 3 monthsโ€”
AdsNoNo
In-app purchasesYesNo โ€” better
MonetizationFreemiumโ€”
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.415.1 โ€” better
Further details โ€” not scored
Size77 MB31 MB
Age rating4+4+
DeveloperLewis HoyDevesh Kanal

In-app purchases

2 purchases

Stacks

Subscriptions2
  • Stacks+ Quarterly$9.993 Months
  • Stacks+ Yearly$27.991 Year
None

Pass

No in-app purchases

Questions

Is Stacks free?
Stacks is free to download, with in-app purchases available.
Is Pass free?
Pass is free to download, with no in-app purchases.
Do Stacks or Pass have ads?
Neither Stacks nor Pass shows ads.

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