Comparison

Scratch Math! vs TTT Letter Board

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

Head to head
About

Scratch Math!

This app provides a hands-on approach to math practice, allowing users to solve problems directly on screen with a built-in scratchpad. It offers various practice activities for arithmetic and fractions, with visual tools and step-by-step explanations to aid understanding and track progress.

Highlights
  • Built-in digital scratchpad for problem-solving
  • Visual fraction playground with animated models
  • Step-by-step worked solutions with explanations
  • Progress tracking for accuracy and streaks
  • Offline-first functionality with local profiles
  • Practice activities for addition, subtraction, multiplication, and division
Features
Read full description

Scratch Math is a hands-on learning app built around how students actually solve math problems. Work through generated problems using a built-in scratch pad—just like working on paper, but without switching apps or losing focus. Practice arithmetic, explore fractions visually, and build algebra skills through interactive activities. Designed for repetition, clarity, visual learning, and confidence. PRACTICE ACTIVITIES Choose a practice card and begin a focused 10-question round. Every card includes a clear preview of the activity. - Addition - Subtraction - Multiplication - Long division - Fraction addition - Fraction subtraction - Fraction multiplication - Decimal practice - Mixed practice Decimal Practice combines addition, subtraction, multiplication, and division in every round. Choose Easy, Medium, or Hard, enter answers using the appropriate decimal separator, and open free technique-based hints when needed. SOLVE THE WAY YOU THINK - Built-in scratch work directly on each problem - Fullscreen scratch mode for more working space - Draw, carry, borrow, and cross out naturally - Pan, zoom, recenter, and clear your scratch work - Familiar worksheet-style problem layouts - Custom keypads for whole numbers, fractions, and decimals Scratch Math is not simply a calculator. It is a focused digital worksheet made for active practice. ALGEBRA PLAYGROUND Build algebra understanding through five interactive activities: - Balance Equations — keep both sides balanced while solving - Expression Tiles — group like terms and simplify expressions - Equation Stepper — choose valid steps and follow the equation - Function Machine — identify rules and complete input-output tables - Coordinate Graph — plot points and turn tables into graphs Algebra activities use generated 10-problem rounds, multiple difficulty levels, visual models, guided explanations, and progress tracking. VISUAL FRACTION PLAYGROUND Explore fractions in a separate hands-on area with animated activity cards and visual models. - Explore Fractions — connect fractions, decimals, and percentages - Fraction Bars — compare values and discover equivalents - Build Fraction — create the requested fraction - Fraction Detective — identify fractions shown by visual models - Equivalent Fractions — find values representing the same amount - Fraction Compare — choose less than, equal to, or greater than Scored fraction activities finish with a clear summary and options to continue practicing or return to the activity hub. LEARN STEP BY STEP - Earn credits by solving problems correctly - Spend credits to unlock complete worked solutions - Use free operation-specific hints during Decimal Practice - Replay explanations with clear, child-friendly steps - Review every answer after each Practice round - See correct, incorrect, and assisted results separately PROGRESS THAT MATTERS - Track solved problems, accuracy, streaks, and perfect rounds - Follow progress across individual Practice modes - Record progress for Fraction and Algebra activities - Unlock badges as skills improve - Earn dedicated Decimal, Fraction, and Algebra badges - See newly earned badges at the end of supported rounds - Keep separate progress for up to four local learner profiles BUILT FOR FOCUS - Offline-first learning - No account required - Progress stored locally on your device - Reduced Motion support - Responsive layouts for phones and tablets - Language selection for English, Spanish, French, Thai, and Arabic Scratch Math helps students practice, understand, and improve—one problem, one step, and one round at a time.

About

TTT Letter Board

This communication tool provides a private and accessible way for individuals with speech barriers to express themselves. It features an alphabetical grid with color-coded rows and immediate speech output for every tap. Designed for ease of use, it offers various customization options for vision and voice.

Highlights
  • Alphabetical grid with numbers and punctuation
  • Color-coded rows for visual scanning
  • Immediate speech output for every tap
  • Smart backspace and lift-to-clear functions
  • Forced dark mode for legibility
  • Copy message function
  • Offline and private operation
Features
Read full description

The TTT Letter Board is a 100% free, private, and customizable AAC (Augmentative and Alternative Communication) app designed for individuals who can spell but face physical or neurological barriers to verbal speech. Built with love by TTT Education & Impact (a registered 501(c)(3) nonprofit), this tool goes beyond traditional letter boards by speaking every tap aloud and reading back entire thoughts, making communication smoother and more accessible. WHO THIS IS FOR Nonspeaking & Minimally Speaking Individuals: A dedicated, portable digital board for everyday communication. The Neurodivergent Community: Designed with structured, color-coded visual organization. Motor & Coordination Challenges: Oversized, fixed buttons support motor planning and physical accuracy. The Spelling Community: A clean, distraction-free tool for families, educators, and communication partners. CORE FEATURES 100% Free & Private: No hidden paywalls, ads, or subscriptions. Fully offline and your data never leaves your device. Smart Layouts: Choose from a large 5x6 Alphabetical Grid with color-coded rows, Intro mode with fewer letters, a full digital QWERTY keyboard, or connect a keyboard for External Keyboard mode. Immediate Speech: Characters are spoken aloud instantly. Press the green DONE button to read back the complete message. Intuitive Clearing: Tap to backspace, hold to clear the board, or lift the device vertically to erase the current word. High Contrast & Legibility: Forced Dark Mode ensures maximum visibility in any lighting. Message History: Tap the history icon on the message bar to easily see your history and copy and paste the text into other apps. ACCESSIBILITY & CUSTOMIZATION Apple Pencil Ready: Use an Apple Pencil to tap letters. Vision & Sensory Support: Specialized modes for color blindness, subdued colors for sensory sensitivities, and integration with iOS vision settings such as Reduce Motion, Increase Contrast, Bold Text, etc. Voice Personalization: Select default voices, download iOS alternatives, or securely authorize Apple Personal Voice. Switch & Eye Tracking Ready: Native integration with Switch Control, Eye Tracking, VoiceOver, Voice Control, AssistiveTouch, and hardware keyboards. Adjustable Speech & Feedback: Control letter sound and readback speeds. Enjoy optional tactile feedback (iPhone only). Dyslexia-Friendly Fonts: Multiple fonts available, including OpenDyslexic. Multilingual: Support for multiple languages. ABOUT TTT EDUCATION & IMPACT Born from The Telepathy Tapes podcast, TTT Education & Impact is a 501(c)(3) nonprofit dedicated to the nonspeaking and minimally speaking community. Our mission is to foster connection, expand access to assistive resources, and support communication journeys. CONTACT & SUPPORT Contact: support@thetelepathytapes.com Support & FAQ: https://sites.google.com/thetelepathytapes.com/app-support Privacy Policy: https://sites.google.com/thetelepathytapes.com/app-privacyWeb: www.thetelepathytapes.com/impact Disclaimer: The TTT Letter Board is a tool intended to assist with daily communication. It is not a medical device, nor is it intended to diagnose, treat, cure, or prevent any condition. This app should not be used as a replacement for professional medical advice or as a primary method for communicating during medical emergencies.

Screenshots

Scratch Math!4 screens
TTT Letter Board1 screens

Verdict

The call

The clearest difference is in-app purchases: TTT Letter Board at none against Scratch Math!'s 3. Scratch Math!'s advantage is update cadence (every 3 days vs every 8 days) and iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume 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. Scratch Math! sells 3 one-off in-app purchases. TTT Letter Board asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Scratch Math! against 5.0 for TTT Letter Board. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Scratch Math! ships an update every 3 days, TTT Letter Board every 8 days. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

Scorecard4 real differences · 6 level
Scratch Math! versus TTT Letter Board: the parameters behind the verdict, then further details
ParameterScratch Math!TTT Letter Board
PriceFreeFree
Rating5.0 (3 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 3 days — betterEvery 8 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size23 MB5 MB
Age rating4+4+
DeveloperMathias BakkenTTT Education & Impact

Customer experience

Scratch Math!

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TTT Letter Board

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Scratch Math!

One-time3
  • Buy Me a Coffee$4.99
  • Buy Me a Coffee$14.99
  • Buy Me a Coffee$39.99
None

TTT Letter Board

No in-app purchases

Questions

Is Scratch Math! free?
Scratch Math! is free to download, with in-app purchases available.
Is TTT Letter Board free?
TTT Letter Board is free to download, with no in-app purchases.
Which has better reviews, Scratch Math! or TTT Letter Board?
Scratch Math! and TTT Letter Board are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.
Do Scratch Math! or TTT Letter Board have ads?
Neither Scratch Math! nor TTT Letter Board shows ads.
Which is updated more often, Scratch Math! or TTT Letter Board?
Scratch Math! ships an update every 3 days, and TTT Letter Board every 8 days. Most recently, Scratch Math! was updated on October 2, 2026 and TTT Letter Board on October 4, 2026.

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