TTT Letter Board vs SHSAT Prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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 each 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 the Standard 5-across letter board with color-coded rows, the Expanded 6-across board with an optional number row, or a full QWERTY keyboard. Switch to Numbers mode for digits and math, Intro mode for 5 letters at a time, or External Keyboard mode to type on a connected keyboard. • Immediate Speech: Letters and symbols are spoken aloud as you tap, with options to choose exactly what gets announced. Press the green DONE button to read back the complete message. • Quick Answers: One-tap YES and NO buttons, plus an option to hear each word read aloud when you press Space. • Intuitive Clearing: Tap to backspace, hold to clear the board, or lift the device upright to delete a letter or the whole 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 see past messages and copy the text into other apps. • Guided Tutorial & Practice Mode: A built-in tour of the board and settings, plus a practice mode for spelling target words with a qualified practitioner. ACCESSIBILITY & CUSTOMIZATION • Apple Pencil Ready: Use an Apple Pencil to tap letters. • Vision & Sensory Support: Color layouts for deuteranopia, protanopia, tritanopia, and monochromacy, subdued colors for sensory sensitivities, or pick your own custom colors. Works with iOS vision settings such as Reduce Motion, Increase Contrast, and Bold Text. • Voice Personalization: Select default voices, download additional iOS voices, 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: English, Spanish (Latin America), German, French, Italian, Portuguese (Brazil), and Swedish, each with matching keyboards and spoken words. 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-privacy Web: https://telepathytapesimpact.org 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.
SHSAT Prep
This app provides a personalized study plan for the SHSAT exam, starting with a diagnostic test to identify weak areas. It offers practice questions, lessons, and full-length adaptive tests that mimic the actual computer-based exam format, complete with worked answers and explanations.
- Personalized study plan
- Diagnostic test
- Adaptive practice tests
- Worked answers with step-by-step methods
- On-screen tools (highlight, cross-out)
- iPad and Apple Pencil support
Read full descriptionHide full description
Most SHSAT prep starts with drilling. That is the fastest way to waste the time you have, because you cannot study everything at once and you do not yet know what is weak. This app starts with a 24-question diagnostic, about half an hour. It is not a score. It tells you where to begin, and builds a study plan around your test date. BUILT FOR THE TEST AS IT IS NOW The SHSAT is computer-adaptive now, and it runs on screen: 50 questions in ELA and 50 in Math, 180 minutes, one question at a time — you can move around inside a reading passage set until you submit it, and nowhere else — and no calculator. Practice here runs by those same rules — timed, one at a time, no going back, no calculator — with the on-screen tools to work with: highlight a passage, cross out a choice you have ruled out, line numbers to point at. The format itself is a lesson, so nothing on test day is new. And one of the full-length tests adapts. The Adaptive Practice Test picks what to ask next from how the sitting is going, the way the real exam does, and afterwards tells you the difficulty level you were working at in each section. The other full-length tests are linear: the whole paper is drawn before you start and does not change with your answers. Either way every sitting draws a fresh set of questions to the same blueprint, so a test is worth sitting more than once. Drills and the question bank are not adaptive; you pick those yourself. WORKED ANSWERS, NOT ANSWER KEYS Every question shows the method, step by step, and then checks the answer against it. Get one wrong and you find out why, not just which letter you missed. MADE FOR iPad, INCLUDING APPLE PENCIL The SHSAT gives you scrap paper and no calculator, so the working is the whole job. On iPad the question sits beside a scratch pad you can write on with Apple Pencil or a finger, and your working stays next to the worked explanation afterwards so you can compare them line by line. Reading passages open side by side with their questions rather than folded into a drawer. WHAT IS INSIDE - 1,385 practice questions for the Grade 8 test; 1,503 in all, including the Grade 9 material - 87 lessons covering every topic, each with worked examples - 60 full-length reading and revising passage sets - Full practice tests: 100 questions, 3 hours, in the digital format — linear, or the Adaptive Practice Test - A one-page report your child can send you when they want to show how it is going The pass unlocks all of it. What stays free is next. FREE, PERMANENTLY - The 24-question diagnostic and the study plan it builds - Your error journal and your progress, always - 10 new questions a day, up to 150 in total - Unlimited redo of anything you have already answered Your progress is never locked — with or without the pass, and after it expires. THE PASS: ONE PAYMENT, NO AUTO-RENEWAL It lasts 365 days from the day you buy it, it does not renew itself, and you will not be charged again. No subscription to remember to cancel. It unlocks every full practice test, the whole lesson library, and the whole question bank with no daily limit. NO DATA COLLECTED No account. No sign-up. No analytics, no advertising, no tracking, and nothing sold to anyone. Your work syncs privately between your own devices through your iCloud account and goes nowhere else. The App Privacy section on this page says "Data Not Collected" because that is literally true. Written for students sitting the SHSAT for Grade 8 or Grade 9 entry.
Screenshots
Verdict
The clearest difference is in-app purchases: TTT Letter Board at none against SHSAT Prep's 1. SHSAT Prep's advantage is ratings volume (6 vs 2). On price, rating, review sentiment and update cadence 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
Both are free to download. SHSAT Prep sells 1 one-off in-app purchase. TTT Letter Board asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for TTT Letter Board against 5.0 for SHSAT Prep. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
TTT Letter Board ships an update every 9 days, SHSAT Prep weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | TTT Letter Board | SHSAT Prep |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 6 — better |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | TTT Education & Impact | Simple Tree LLC |
Customer experience
TTT Letter Board
SHSAT Prep
In-app purchases
TTT Letter Board
No in-app purchases
SHSAT Prep
- 365-Day Pass$24.99









