Comparison

BrainDeck vs Flexi

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

Head to head
About

BrainDeck

This AI-powered flashcard app helps students study smarter and remember longer. Create custom flashcards with AI tools, schedule study sessions, and track your progress. Personalize your decks with custom covers to make learning more enjoyable and effective.

Highlights
  • AI-powered flashcard creation
  • Customizable flashcard decks
  • Smart study session scheduling
  • Progress tracking and insights
  • Personalized deck covers
  • Study reminders
Features
Read full description

Master Your Studies with BrainDeck Embark on your learning journey with BrainDeck—your intelligent study partner powered by AI. Whether you're a high school student, a university scholar, or a lifelong learner, our app is designed to help you study smarter, remember longer, and perform better. Study Smarter, Not Harder With BrainDeck, dive into an efficient study experience using custom flashcards tailored to your learning needs. Create flashcards quickly with our AI-powered tools, and watch as BrainDeck adapts to your learning pace, ensuring you focus on areas that need attention. Learn with Precision Plan and schedule your study sessions with BrainDeck's smart scheduling feature, ensuring you keep up with your learning without feeling overwhelmed. Set reminders for each deck and stay on track with your educational goals. Whether you’re preparing for an exam or just brushing up on a subject, BrainDeck helps you manage your time effectively. Build Knowledge Education is about growth. BrainDeck not only offers a personalized study experience but also helps you track your progress with detailed insights into your learning patterns. Join a community of motivated learners, and take your knowledge to the next level. Create and Personalise Make your study decks uniquely yours with customisable front covers. Choose from a variety of symbols and colors to personalize the look of your flashcards and make studying a more enjoyable experience. While BrainDeck keeps your sessions organized, you bring your personal style to every learning session. Get ready to elevate your study habits with BrainDeck and transform how you learn and remember. It’s not just about studying—it’s about excelling. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Flexi

Build your vocabulary and master new languages with an AI-powered flashcard system. Create personalized cards, get instant translations and definitions, and utilize spaced repetition for effective long-term memorization. Supports numerous languages and offers offline study options.

Highlights
  • Personalized flashcard creation
  • AI-powered translations and definitions
  • Spaced repetition system
  • Text-to-speech pronunciation
  • Offline study mode
  • Progress tracking
  • CSV import/export
Features
Read full description

Flexi is an AI-powered vocabulary builder and language-learning flashcard app that turns a word or short expression into ready-to-study cards in seconds. Compare options for different meanings, edit any detail, and save one or several cards to your deck. Each AI-generated flashcard can include a translation, contextual example, definition, part of speech, and—where supported—a written pronunciation guide. Flexi then schedules reviews with FSRS-powered spaced repetition to help you remember vocabulary long term. WHY LEARN WITH FLEXI? - AI Flashcard Maker: Enter a word or short expression and get several editable card options for relevant meanings. - Complete Vocabulary Cards: Generate translations, examples, definitions, parts of speech, and pronunciation guides based on your deck’s language and settings. - Pronunciation Guides: Generate IPA for English, Spanish, German, Dutch, Czech, Finnish, and Romanian; kana for Japanese; Pinyin or Zhuyin for Mandarin Chinese; and Jyutping for Cantonese. - Spaced Repetition: Study and memorize new words with FSRS-based scheduling that plans reviews at the right time. - Text-to-Speech Audio: Hear words and examples to practice listening and pronunciation. - Flexible Card Creation: Add one card, select several meanings at once, or paste a word list to create flashcards in bulk. - Easy Imports: Bring your existing study decks from Anki, Quizlet, or CSV files. - English Vocabulary Sets: Start learning immediately with curated, ready-made word sets. - Quick Notes: Save words you meet in videos, books, or conversations and turn them into flashcards later. - Track Your Progress: Follow your learning progress and study comfortably with Dark Mode. FLEXI PREMIUM - Interactive AI Language Tutor: Ask questions about any flashcard, explore nuances, and practice fill-in-the-blank exercises at your level. - AI and Personal Images: Generate or upload images to strengthen visual memory. - Topic-Based Vocabulary: Build word sets for travel, business, idioms, small talk, and more. - Full Catalog Access: Unlock all curated English vocabulary sets. SUPPORTED LANGUAGES English, Spanish, French, German, Dutch, Japanese, Korean, Chinese (Simplified and Traditional), Italian, Portuguese, Russian, Arabic, Turkish, Swedish, Danish, Norwegian, Polish, Ukrainian, Hungarian, Czech, Thai, Hebrew, Vietnamese, Finnish, Romanian, and Serbian. Try Flexi Premium free for 7 days and build a vocabulary study system that fits your goals. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BrainDeck4 screens
Flexi4 screens

Verdict

The call

BrainDeck and Flexi are too close to call on the numbers: across 10 compared parameters — price, rating, review sentiment and ratings volume 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. BrainDeck sells 6 in-app purchases, starting at $1.99 per 7 days and Flexi sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for BrainDeck against 4.8 for Flexi. Both are backed by a comparable volume of ratings — 246 and 138 respectively. Written reviews are what separate them: 70% of BrainDeck's written reviews are positive against 77% of Flexi's.

UpkeepUpdate frequency

BrainDeck ships an update every 6 days, Flexi weekly. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

ScorecardNo meaningful differences
BrainDeck versus Flexi: the parameters behind the verdict, then further details
ParameterBrainDeckFlexi
PriceFreeFree
Rating4.7 (246 ratings)4.8 (138 ratings) — better
Positive reviews70.0% of reviews76.6% of reviews — better
Number of ratings246 — better138
Update frequencyEvery 6 days — betterWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size60 MB82 MB
Age rating4+12+
DeveloperHome Cook Technologies LtdTomer Beilinson

Customer experience

BrainDeck

All ratings244 ratings
Positive94.3%
Neutral2.0%
Negative3.7%
Written reviews30 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

Flexi

All ratings138 ratings
Positive94.9%
Neutral1.4%
Negative3.6%
Written reviews47 reviews
Positive76.6%
Neutral4.3%
Negative19.1%

Bugs and requests

BrainDeck

Reported bugs

6 issues
  • App flashes and closes unexpectedly
  • Images and diagrams appear too small
  • Cannot add more than 5 images at one time
  • Security risk detected
  • App lock issues
Show 1 more
  • Cannot find free version when advertised as free

Requested features

13 requests
  • Allow iPad version on Mac
  • Improve image/diagram size and visibility
  • Add printing option for flashcards
  • Reintroduce test-style practice exams
  • Allow arrangement of cards during editing (up/down, back first)
Show 8 more
  • Import Anki decks
  • Option to choose output language when creating cards from files
  • Chinese interface support
  • Allow more than 5 images per card
  • Add prompt input window for file uploads
  • Add Chinese language community library
  • Improve user interface for better app experience
  • Support uploading multiple images on the back of image cards

Flexi

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

BrainDeck

Subscriptions4
  • BrainDeck Pro Weekly7 Days trial$1.997 Days
  • BrainDeck Pro Monthly7 Days trial$3.991 Month
  • BrainDeck Pro Yearly7 Days trial$19.991 Year
Show 1 more
  • BrainDeck Pro Yearly$24.991 Year
One-time2
  • BrainDeck Pro Lifetime$29.99
  • BrainDeck Pro Lifetime$49.99
4 purchases

Flexi

Subscriptions3
  • Premium Monthly7 Days trial$5.991 Month
  • Premium Monthly$5.991 Month
  • Premium Annual7 Days trial$29.991 Year
One-time1
  • Premium Lifetime$99.99

Questions

Is BrainDeck free?
BrainDeck is free to download, with in-app purchases available.
Is Flexi free?
Flexi is free to download, with in-app purchases available.
Which has better reviews, BrainDeck or Flexi?
Flexi is rated higher. BrainDeck averages 4.7 out of 5 from 246 ratings, while Flexi averages 4.8 from 138 ratings.
Do BrainDeck or Flexi have ads?
Neither BrainDeck nor Flexi shows ads.
Which is updated more often, BrainDeck or Flexi?
BrainDeck ships an update every 6 days, and Flexi weekly. Most recently, BrainDeck was updated on November 4, 2026 and Flexi on November 8, 2026.

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