Comparison

AlgoApp vs Deck

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

Head to head
About

AlgoApp

This app helps you learn languages or study for tests using advanced flashcards. It offers automatic translation, text-to-speech, AI-powered PDF conversion, and offline access. Sync your progress across devices and organize your study materials with folders.

Highlights
  • Automatic translation for 120 languages
  • Text-to-speech for 39 languages
  • AI PDF to flashcard conversion
  • Offline study mode
  • Cross-device sync
  • FSRS spaced repetition algorithm
  • Anki deck import
Features
Read full description

Learn languages, or study for school and tests, with the most powerful and user-friendly flashcard app. Millions of language-learners and students have studied over 2 billion flashcards with AlgoApp. Ranked #1 Education app in multiple countries world-wide. Featured in the New York Times. Designed by learning experts, including a published neuroscientist. Whether you're learning a language to live somewhere new or just for fun, need to get through med school, or just want to crush your tests, AlgoApp has already done it for over 5 million people. Why AlgoApp? FOR LANGUAGE LEARNERS • Automatic translation. Make vocab flashcards faster by typing words in the language you know, then AlgoApp translates to the language you're learning (or vice versa). Supports 120 languages including Japanese, Chinese, Korean, English, German, French, and more... • Speaks flashcards to you, in dozens of languages (automatic text-to-speech). Supports 39 languages including Japanese, Chinese, Korean, English, German, French, and more... • Automatically generates furigana annotations for kanji, or pinyin annotations for hanzi. FOR STUDENTS • Converts PDFs directly into flashcards using AI. Upload lecture slides and have a full deck of flashcards ready in seconds. • Prompt AI to make flashcards for you based on text and pictures. Turns handwritten notes and diagrams into flash cards for you. • Format your cards with colored text, bulleted lists, underlines, and more (no CSS needed). • Works offline, so you can study and make cards even when you don't have signal. • Syncs automatically with desktop, web app, and your other phones and tablets. So you can make cards on a computer with a full keyboard, then study on your phone. • Natively supports FSRS, the most-advanced spaced repetition algorithm. • Imports Anki decks (.apkg), AlgoApp (.xml) files, or spreadsheets (.csv). • Supports folders and subfolders, to keep your classes organized. • Notifications tell you when it's time to study (opt-in). • Share decks and study with your friends using Study Groups. • No ads. For the most-dedicated students, try AlgoApp Unlimited free for 7 days. Study as much as you want on all your devices. If you want to upgrade to AlgoApp Unlimited, you can either purchase "Unlimited: 1-Year" which is a 1-year auto-renewing subscription, or "Unlimited: Lifetime" which is a one-time purchase. • Unlimited grants you access to unlimited cross-platform multi-device sync, and more.. • If you choose "Unlimited: 1-Year", the subscription will automatically renew, unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your Apple Account within 24-hours before the end of the current period (renewal or trial period). • You can manage your subscription and disable auto-renewal by going to your Account Settings after purchase. Terms of Service: https://www.algoapp.ai/terms.html Privacy Policy: https://www.algoapp.ai/privacy.html

About

Deck

Learn intuitively with a flashcard app that rebuilds remembering habits using a smart algorithm. Add text, equations, photos, GIFs, or sketches to cards and manage them with tags and reminders. Track progress and utilize practice or test modes.

Highlights
  • Add text, equations, photos, GIFs, sketches
  • Create and manage decks with tags
  • Intuitive suggestion-based learning
  • Progress tracking and test modes
  • Import decks from cloud services
  • iCloud sync across Apple devices
  • Dark mode and adjustable text size
Features
Read full description

"There's is always one more thing to learn why not start from a Deck" Deck is Flashcard based app which help you to learn in more intuitive way. It help to rebuild your remembering habits with its state of the art algorithm which carefully monitors your learning and provide situation based suggestion all these smart thing work inside the device, so you don't have to care for your privacy protection. KEY FEATURES : • Add Text, Mathematical Equation, Photos, GIFs, Sketch in a Flashcard. • Easy to create and manage Decks of Flashcard. • Create different color of cards. • Intuitive suggestion based learning. • Tags made easier to manage your Decks in more organized way. • Reminder never let you forget any deck. • Whole UI element support Dark more so your content appears better at night as well. • Modern UI with support for latest iOS and macOS devices. Native support for all Apple Devices. • Import Decks or Cards from Web, Google Drive, Dropbox Evernote, Box and more in CSV format. • Multi-window lets you open multiple Decks at once . • iCloud Sync makes using Deck across Mac and iOS devices seamless and easy. • Discover this section to know your progress at each and every step this includes progress of adding card, test scores, forget rate and test appeared. It also includes each and every details of the test. • Discover two new test mode include the Practice mode and Test mode. • Widgets support for iOS, iPadOS and macOS. • Increase the size of text when inside learning mode. You may purchase an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription • 3 month ($1.99), 1 year ($6.49) for Family and One time buy option ($24.99). • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase • Privacy policy and terms of use: https://haarisiqubal.github.io/app/privacy • Terms of use : https://haarisiqubal.github.io/app/terms

Screenshots

AlgoApp4 screens
Deck4 screens

Verdict

The call

The clearest difference is review sentiment: Deck at 100% against AlgoApp's 50%. AlgoApp's advantage is rating (4.7 vs 4.0) and update cadence (every 4 days vs every 3 months). On price, ads, in-app purchases and monetization model 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. AlgoApp sells 4 in-app purchases, starting at $9.99 per month and Deck sells 3 in-app purchases, starting at $1.99 per 3 months. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

AlgoApp holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: AlgoApp has 20K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 50% of AlgoApp's written reviews are positive against 100% of Deck's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

AlgoApp ships an update every 4 days, Deck every 3 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
AlgoApp versus Deck: the parameters behind the verdict, then further details
ParameterAlgoAppDeck
PriceFreeFree
Rating4.7 (20K ratings) — better4.0 (4 ratings)
Positive reviews49.7% of reviews100.0% of reviews — better
Number of ratings20K — better4
Update frequencyEvery 4 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, Mac
Requires iOS15.0 — better16.0
Further details — not scored
Size51 MB28 MB
Age rating12+4+
DeveloperAlgoApp IncHaaris Iqubal

Customer experience

AlgoApp

All ratings20,051 ratings
Positive93.2%
Neutral2.3%
Negative4.5%
Written reviews939 reviews
Positive49.7%
Neutral10.9%
Negative39.4%

Deck

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews11 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

AlgoApp

Reported bugs

5 issues
  • Cards disappearing from decks
  • Inability to log in or sync across devices
  • Formatting issues when copying/pasting text
  • Inconsistent behavior when editing cards
  • Frequent app crashes and freezes

Requested features

6 requests
  • Ability to edit/customize downloaded decks
  • Option to review cards in creation order
  • Customizable daily study limits
  • Global search across all decks
  • Markdown support and rich text formatting
Show 1 more
  • Improved folder/deck organization tools

Deck

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

AlgoApp

Subscriptions3
  • Unlimited: 1-Month$9.991 Month
  • AnkiApp Unlimited$24.991 Year
  • Unlimited: 1-Year$29.991 Year
One-time1
  • Unlimited: Lifetime$149.99
3 purchases

Deck

Subscriptions2
  • Subscribe - 3 Month Family7 Days trial$1.993 Months
  • Subscribe - Yearly Family$6.491 Year
One-time1
  • Buy - Lifetime$24.99

Questions

Is AlgoApp free?
AlgoApp is free to download, with in-app purchases available.
Is Deck free?
Deck is free to download, with in-app purchases available.
Which has better reviews, AlgoApp or Deck?
AlgoApp is rated higher. AlgoApp averages 4.7 out of 5 from 20K ratings, while Deck averages 4.0 from 4 ratings.
Do AlgoApp or Deck have ads?
Neither AlgoApp nor Deck shows ads.
Which is updated more often, AlgoApp or Deck?
AlgoApp ships an update every 4 days, and Deck every 3 months. Most recently, AlgoApp was updated on October 24, 2026 and Deck on October 9, 2026.

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