Comparison

StackCards vs ScanLingo

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

Head to head
About

StackCards

Features
Read full description

StackCards is a beautiful, focused flashcards app for studying anything languages, math, science, code, history, or any subject you want to master. Create a card, add the answer, and review it until it sticks. No clutter, no accounts, no subscriptions. MADE FOR ANY SUBJECT • Basic cards - a question or term and its answer • Vocabulary cards - a word or phrase and its translation • Formula cards - a name and its formula, with a math symbols keyboard • Code cards - concepts with syntax-highlighted snippets in 17+ languages SMART STUDY • A smart review mode that brings back the cards you miss and haven't seen in a while • Study modes: smart mix, hardest first, least reviewed, and shuffle • Beat-the-clock timed mode • Swipe to rate, tap to reveal, flip for examples and notes STAY ORGANIZED • Group cards into collections and subfolders • Color tags and instant search • Drag & drop to move and reorder • Export and import collections to share or back them up BUILD A HABIT • A daily streak that keeps you coming back • Optional evening reminder if you haven't studied • Unlock an exclusive theme and card style at a 100-day streak MAKE IT YOURS • Light, dark, and system appearance • Accent colors, animated backgrounds, and animated card styles • Track your progress with mastered / learning / new stats PRIVATE BY DESIGN Everything stays on your device. StackCards doesn't track you and doesn't collect your data. STACKCARDS PREMIUM Unlock everything with a single payment - yours forever, no subscription: • Unlimited collections and nested folders • Every theme, accent color, and card style • Add images to your cards • Unlimited imports of any size The free plan includes up to 3 collections, unlimited cards, and one level of subfolders - plenty to get started.

About

ScanLingo

Read full description

ScanLingo turns the words you meet while reading into cards you can revisit right where they came from. Start from a page you're reading or an object in front of you — and build your vocabulary a little at a time. Snap and Learn Take a photo or pick an image, and ScanLingo recognizes the object right on your device, showing up to 3 candidate words ranked by confidence. Pick the one you want, check or edit the translation and definition, then save it to your vocabulary cards. Learn From the Book Scan a page with on-device OCR, confirm the text, then get the translation and read-aloud and save the sentences you care about. Add title, author, cover, page and notes — every card stays linked to its book and page, so review takes you straight back to the original line. Pronunciation and Follow-Reading Words, phrases and sentences keep their original text, translation, pronunciation hints and source context. Read along, hold to follow-read, and see how you did — steadily moving between what you've mastered and what's due. Key Features • On-device object recognition, up to 3 candidates per image • On-device OCR for printed text • Editable translations and definitions • Pronunciation, read-aloud and follow-reading feedback • Word, phrase and sentence cards • Shelf, page numbers, notes and book binding • Context review built around your original book • No account needed; learning content stays on your device by default ScanLingo supports learning Chinese (Simplified and Traditional), English, Japanese, Korean, French and Portuguese. Actual translation, read-aloud and recognition may vary by device, iOS version and language. Advanced features are unlocked with a one-time purchase — no subscription, no auto-renewal. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

StackCards4 screens
ScanLingo4 screens

Verdict

The call

The clearest difference is update cadence: ScanLingo at every 11 days against StackCards's monthly. On price, ads, in-app purchases and device support there is nothing between them.

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

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

Both are free to download. StackCards sells 1 one-off in-app purchase and ScanLingo sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

StackCards ships an update monthly, ScanLingo every 11 days. Both last shipped on October 25, 2026.

Scorecard1 real difference Ā· 5 level
StackCards versus ScanLingo: the parameters behind the verdict, then further details
ParameterStackCardsScanLingo
PriceFreeFree
Update frequencyMonthlyEvery 11 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS18.018.0
Further details — not scored
Size5 MB72 MB
Age rating4+4+
DeveloperLuis Leonardo Salas Delgadilloč•“ę° 戚

In-app purchases

1 purchases

StackCards

One-time1
  • StackCards Premium$4.99
2 purchases

ScanLingo

Subscriptions1
  • ScanLingo1 Month trial$0.991 Month
One-time1
  • Plus Lifetime Access$9.99

Questions

Is StackCards free?
StackCards is free to download, with in-app purchases available.
Is ScanLingo free?
ScanLingo is free to download, with in-app purchases available.
Do StackCards or ScanLingo have ads?
Neither StackCards nor ScanLingo shows ads.
Which is updated more often, StackCards or ScanLingo?
StackCards ships an update monthly, and ScanLingo every 11 days. Most recently, StackCards was updated on October 25, 2026 and ScanLingo on October 25, 2026.

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