Comparison

Stacked vs MemStacks

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

Head to head
About

Stacked

Transform notes, photos, and PDFs into AI-powered flashcards instantly. This app uses spaced repetition to optimize your study sessions, helping you retain information more effectively for exams and skill mastery.

Highlights
  • AI flashcard generation from text, photos, and PDFs
  • Spaced repetition for optimized review
  • Organize decks by subject or topic
  • Easy renaming and deletion of cards
  • Clean and simple user interface
Features
Read full description

Turn your notes, photos, and PDFs into flashcards in seconds — Stacked uses AI to build your deck instantly, so you spend more time learning and less time making cards. Whether you're cramming for an exam, learning a new language, or mastering a new skill, Stacked does the heavy lifting. Paste your notes, snap a photo of your textbook, or upload a PDF and watch your flashcard deck appear in seconds. Then let spaced repetition take over — Stacked surfaces the cards you need to review most, so what you study actually sticks. Features: AI flashcard generation from text, photos, and PDFs Spaced repetition built in — study smarter, not longer Organize your decks by subject, topic, or exam Rename and delete stacks and individual cards with ease Clean, simple design that gets out of your way Stacked is free to download. Unlock unlimited AI generation with Stacked Pro — $2.99/month or $19.99/year. Rated 5 stars — "aced every test this quarter just because of this app." Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

MemStacks

Features
Read full description

MemStacks is a powerful yet easy-to-use flashcard app designed to help you learn anything efficiently. Create custom stacks filled with different types of cards: • AI Cards — generate complete cards using Apple Intelligence from your own prompts • Text Cards — enter your own terms and definitions • Photo Cards — pair images for visual learning • Translate Cards — type a word and get instant translations For an even faster start, create an AI Stack and let Apple Intelligence build a complete learning set around your chosen topic. Once your stack is ready, practice using smart exercise modes with random order, learning algorithms. With widgets, notifications, and a clean, focused design, MemStacks keeps you motivated to learn a little every day. Learn smarter. Remember longer. Build knowledge your way.

Screenshots

Stacked4 screens
MemStacks4 screens

Verdict

The call

Stacked and MemStacks are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Stacked sells 2 in-app purchases, starting at $2.99 per month and MemStacks sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Stacked ships an update every 3 days, MemStacks every 2 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

ScorecardNo meaningful differences
Stacked versus MemStacks: the parameters behind the verdict, then further details
ParameterStackedMemStacks
PriceFreeFree
Rating5.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 3 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS18.018.0
Further details — not scored
Size11 MB19 MB
Age rating4+4+
DeveloperStephanie DugasDenızcan OZPINAR

In-app purchases

2 purchases

Stacked

Subscriptions2
  • Stacked Pro Monthly7 Days trial$2.991 Month
  • Stacked Pro Yearly7 Days trial$19.991 Year
1 purchases

MemStacks

One-time1
  • Support the Developer$0.99

Questions

Is Stacked free?
Stacked is free to download, with in-app purchases available.
Is MemStacks free?
MemStacks is free to download, with in-app purchases available.
Do Stacked or MemStacks have ads?
Neither Stacked nor MemStacks shows ads.
Which is updated more often, Stacked or MemStacks?
Stacked ships an update every 3 days, and MemStacks every 2 days. Most recently, Stacked was updated on October 30, 2026 and MemStacks on October 28, 2026.

Other comparisons