# TTT Letter Board vs SHSAT Prep

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.

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.

## The numbers

| Metric | TTT Letter Board | SHSAT Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ttt-letter-board/id6773523125/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/shsat-prep-practice-tests/id6797011398/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 23 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TTT Education & Impact](https://appshunter.io/developer/6773523127) | [Simple Tree LLC](https://appshunter.io/developer/328416954) |

## What reviewers say

### TTT Letter Board

[App page](https://appshunter.io/ios/app/ttt-letter-board/id6773523125)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SHSAT Prep

[App page](https://appshunter.io/ios/app/shsat-prep-practice-tests/id6797011398)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 365-Day Pass | $24.99 | one-time |


## Frequently asked questions

### Is TTT Letter Board free?

TTT Letter Board is free to download, with no in-app purchases.

### Is SHSAT Prep free?

SHSAT Prep is free to download, with in-app purchases available.

### Which has better reviews, TTT Letter Board or SHSAT Prep?

TTT Letter Board and SHSAT Prep are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.

### Do TTT Letter Board or SHSAT Prep have ads?

Neither TTT Letter Board nor SHSAT Prep shows ads.

### Which is updated more often, TTT Letter Board or SHSAT Prep?

TTT Letter Board ships an update every 9 days, and SHSAT Prep weekly. Most recently, TTT Letter Board was updated on November 5, 2026 and SHSAT Prep on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*