Comparison

Memorize By Heart vs Red Sheet

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

Head to head
About

Memorize By Heart

This app helps you learn and retain any text, from poems and scripts to study material. It uses proven techniques like letter removal, fill-in-the-blanks, and spaced repetition to strengthen recall and long-term memory. Collaborate with others for added motivation and accountability.

Highlights
  • Letter and word removal for familiarity
  • Fill-in-the-blank and unscramble exercises
  • Spaced repetition for long-term memory
  • Group memorization and progress tracking
  • Text-to-speech for auditory learning
  • Multi-language support
Features
Read full description

Need to memorize text quickly and remember it long-term? Memorize By Heart is a memory training and study app designed to help you learn speeches, poems, verses, scripts, lines, lyrics, language text, and exam material by heart using proven memorization techniques. Used by students, professionals, actors, and language learners, Memorize By Heart helps you learn faster, practice recall, and improve long-term memory MEMORIZE AND LEARN ANY TEXT BY: 1. Building familiarity • Gradually remove letters and words to strengthen memory • Tap to reveal hidden parts of the text • Listen to the text using text-to-speech while studying 2. Strengthening recall • Unscramble sentences and words • Fill-in-the-blank memory exercises • Type the first letter of each word • Practice active recall instead of passive reading 3. Testing your memory • Multiple-choice memory quizzes • Type the text from memory • Recite the entire text by heart • Custom games like "Run Scene" for different memorization types Get instant feedback on accuracy! SPACED REPETITION FOR LONG-TERM MEMORY Review your memorized text at scientifically optimized intervals using reminders and notifications. Spaced repetition helps you remember more while spending less total study time. MEMORIZE TOGETHER WITH GROUPS Study and memorize as a group to stay motivated and accountable. • Share memorizations with friends, classmates, or teams • See each other’s memorization progress and recall accuracy • Track rankings and compare progress within your group Creating a group requires Premium, but anyone can join a group for free. CHUNKING (Premium) Break long texts into smaller sections to make memorization easier and more effective. EASY TEXT INPUT • Copy and paste any text • Download popular memorization content • Scan images with text (Premium) • Upload PDF files (Premium) MULTI-LANGUAGE SUPPORT Practice memorization and recall in multiple languages — ideal for language learning and pronunciation practice. PREMIUM FEATURES • Unlimited memorizations • Cloud sync across devices • Advanced memory and recall exercises • Group creation for shared memorization • Scan images, take photos of text, or upload files for instant memorization Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Payment will be charged to your iTunes Account. Any unused portion of a free trial, if offered, will be forfeited upon purchase. Terms of Service: https://memorizebyheart.app/terms-and-conditions Privacy Policy: https://memorizebyheart.app/privacy-policy

About

Red Sheet

Create and study flashcards from your PDFs, notes, and images. This app lets you hide and reveal text to transform study materials into interactive flashcards for faster memorization. Supports various import options and flexible study tools.

Highlights
  • Create flashcards from PDFs
  • Import from note apps and cloud storage
  • Hide and reveal text for study
  • Create flashcards from photos and images
  • Vocabulary and word list flashcards
  • One-tap show/hide for quick review
Features
Read full description

◆ All-in-One PDF Memorization App with Red Sheet Study Turn your PDFs, notes, textbooks, handouts, and images into powerful study materials. This app helps students memorize faster by hiding and revealing important parts of their own documents. Import PDF files, photos, scanned notes, class handouts, worksheets, and study materials, then create memorization blocks directly on the page. It works like a digital red sheet, flashcard maker, and PDF study tool in one simple app. ◆ PDF Memorization Made Simple ・Import PDF files and study directly from the page ・Hide words, definitions, formulas, diagrams, and answers ・Tap to reveal hidden areas while reviewing ・Use red sheet style memorization on PDF pages ・Study textbooks, school handouts, exam materials, and notes ・Create your own PDF memorization notebook If you already study with PDFs, this app turns them into active memorization tools. ◆ Red Sheet Style Study for PDFs and Images Use memorization blocks to cover the parts you want to remember. Place blocks over text, formulas, diagrams, definitions, answers, or explanations. ・Hide text like using a red sheet ・Reveal answers by tapping ・Create blocks anywhere on a PDF or image ・Adjust block size by dragging the edges ・Change the color and style of blocks ・Use blocks for notes, textbooks, worksheets, and scanned documents This is useful when you want to memorize from your own materials without rewriting everything into separate flashcards. ◆ Smooth Vertical Review for Memorization Review multiple PDF pages and images smoothly. Vertical scrolling makes it easy to study long documents, like moving a red sheet from top to bottom. ・Scroll vertically through study pages ・Review many PDF pages at once ・Memorize photos and handouts continuously ・Swipe between pages and cards ・Add more images when needed ・Study at your own pace Useful for test prep, school study, certification exams, language learning, and daily review. ◆ Useful Study Tools ・One-tap show and hide for fast review ・Multiple memorization blocks for one page ・Auto-align blocks for cleaner layouts ・Zoom in with two fingers to study small text ・Hidden areas stay aligned even when zooming ・Add memo text to support memorization ・Hide memo text for self-testing ・Organize study decks by title or subject Create separate study materials for English, science, history, math, medical terms, law, certification exams, or any subject that requires memorization. ◆ Great For ・Students preparing for tests and exams ・PDF study and textbook review ・Vocabulary memorization ・Language learning ・Science, history, math, and social studies ・Certification exam preparation ・Medical, legal, and technical study ・People who want a simple flashcards maker ・Students who use GoodNotes, notes apps, or PDF files ・Anyone who wants to memorize from their own materials ◆ How to Use 1. Import a PDF file, photo, or image 2. Place memorization blocks over the parts you want to hide 3. Tap to reveal the answer while studying 4. Repeat until you can remember it 5. Organize your materials by subject and review again ◆ Why This App Is Different This app focuses on PDF memorization and red sheet style study. You do not need to recreate every page from scratch. Use your own PDFs, notes, handouts, images, and textbooks as they are, then hide only the parts you want to memorize. It is a simple way to turn everyday study materials into flashcard-style memorization tools. ◆ Recommended If You Want ・A PDF study app for memorization ・A flashcards maker from PDFs ・A red sheet style study app ・A way to memorize school notes and handouts ・A simple tool for exam preparation ・A study app that works with your own materials ・A faster way to hide and reveal answers Start studying your own PDFs, notes, and images with red sheet style memorization. Make your study materials easier to review, repeat, and remember. Terms of Service https://hidevoicy.com/en/tos Privacy Policy https://hidevoicy.com/en/privacy

Screenshots

Memorize By Heart4 screens
Red Sheet4 screens

Verdict

The call

The clearest difference is rating: Memorize By Heart at 4.8 against Red Sheet's 4.2. Memorize By Heart also leads on ratings volume (2.5K vs 5). Red Sheet's advantage is update cadence (every 3 days vs every 2 weeks) and device support (4 vs 2). On price, review sentiment, ads and in-app purchases 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. Memorize By Heart sells 6 in-app purchases, starting at $4.99 per month and Red Sheet sells 7 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Memorize By Heart holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Memorize By Heart has 2.5K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 76% of Memorize By Heart's written reviews are positive against 78% of Red Sheet's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Memorize By Heart ships an update every 2 weeks, Red Sheet every 3 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Memorize By Heart versus Red Sheet: the parameters behind the verdict, then further details
ParameterMemorize By HeartRed Sheet
PriceFreeFree
Rating4.8 (2.5K ratings) — better4.2 (5 ratings)
Positive reviews76.2% of reviews77.8% of reviews — better
Number of ratings2.5K — better5
Update frequencyEvery 2 weeksEvery 3 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.413.0 — better
Further details — not scored
Size135 MB193 MB
Age rating4+4+
DeveloperCraig WalkerFoodmenu.world Inc.

Customer experience

Memorize By Heart

All ratings2,456 ratings
Positive95.4%
Neutral2.4%
Negative2.2%
Written reviews164 reviews
Positive76.2%
Neutral5.5%
Negative18.3%

Red Sheet

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews36 reviews
Positive77.8%
Neutral11.1%
Negative11.1%

Bugs and requests

Memorize By Heart

Reported bugs

4 issues
  • App crashes or freezes
  • Syncing issues between devices
  • Slider feature not working properly with non-English text
  • Save button hidden behind keyboard

Requested features

5 requests
  • Add more free features
  • Improve voice recognition accuracy
  • Allow reordering and organizing of memorizations
  • Provide more customization options
  • Add support for more languages

Red Sheet

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Memorize By Heart

Subscriptions5
  • Monthly7 Days trial$4.991 Month
  • 1 month$4.991 Month
  • 6 months$9.996 Months
Show 2 more
  • Yearly7 Days trial$19.991 Year
  • 12 months$19.991 Year
One-time1
  • Lifetime$49.99
7 purchases

Red Sheet

Subscriptions7
  • Monthly Special plan$2.991 Month
  • Monthly Super Saver Plan$2.991 Month
  • Monthly Value Plan$3.991 Month
Show 4 more
  • Basic Plan$5.991 Month
  • 3 Month Plan - V 3.1.5 needed$9.993 Months
  • Half year plan (Sale)$17.996 Months
  • Half year plan - V2.9.0 needed$22.996 Months

Questions

Is Memorize By Heart free?
Memorize By Heart is free to download, with in-app purchases available.
Is Red Sheet free?
Red Sheet is free to download, with in-app purchases available.
Which has better reviews, Memorize By Heart or Red Sheet?
Memorize By Heart is rated higher. Memorize By Heart averages 4.8 out of 5 from 2.5K ratings, while Red Sheet averages 4.2 from 5 ratings.
Do Memorize By Heart or Red Sheet have ads?
Both Memorize By Heart and Red Sheet show ads.
Which is updated more often, Memorize By Heart or Red Sheet?
Memorize By Heart ships an update every 2 weeks, and Red Sheet every 3 days. Most recently, Memorize By Heart was updated on October 29, 2026 and Red Sheet on October 30, 2026.

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