Ta vs LetterRack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ta
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The Ta-Daaa AR app offers a selection of augmented reality experiences. Scan compatible visuals to reveal animations, videos, text, or interactive elements directly on your screen. Each project delivers a unique experience designed to transform your surroundings into a space for creative exploration. The app works exclusively with specific visuals compatible with Ta-Daaa AR. This project was made possible thanks to the support of the OPI – Office de Promotion des Industries et des Technologie, as well as the Haute École d’Art et de Design de Genève (HEAD – Genève).
LetterRack
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LetterRack. The Mentalist's Secret Weapon. Mentalism lives on one thing: focus. LetterRack gives your spectator exactly what their mind needs to lock onto a thought. Three powerful effects, one elegant tool: A spectator thinks of a random word generated by the app. The mentalist reads their mind. A spectator unscrambles an anagram and focuses on the hidden word. The mentalist reads their mind. A spectator freely chooses any word. The mentalist reads their mind. Three different paths. One impossible outcome. Full control for the performer: LetterRack gives mentalists full control over their letter sets, preparing, organizing, customizing, and cycling through words with precision, so the performer can focus entirely on the audience, not the mechanics. Instant sharing, zero friction: Generate a QR code in seconds and let your spectator scan it with their iPhone. No app download required. They land directly via App Clip, turning their own phone into part of the effect. Always within reach: A Home Screen widget keeps your current word visible at a glance, ready the moment you need it. They think it. You know it. Word lists currently available in English only. Additional languages coming in future updates. The app is free to download and try with up to 5 words. The widget and Apple Watch complication are free to install but show only the first letter of the word. Full word display, App Clip, custom word lists, and advanced word management require an Xtremagic Pass subscription or one-time purchase.
Screenshots
Verdict
The clearest difference is in-app purchases: Ta at none against LetterRack's 3. Ta also leads on iOS requirement (12.0 vs 26.4). LetterRack's advantage is device support. On price 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. LetterRack sells 3 in-app purchases, starting at $3.99 per month. Ta asks for nothing beyond the download.
| Parameter | Ta | LetterRack |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 3 weeks |
| Ads | — | No |
| In-app purchases | No — better | Yes |
| Devices | — | iPhone, Apple Watch — better |
| Requires iOS | 12.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 122 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Ta-Daaa Studio Sarl | Vincent Launay |
In-app purchases
Ta
No in-app purchases
LetterRack
- Xtremagic Pass$3.991 Month
- Xtremagic Pass$24.991 Year
- Full Access (One-Time Purchase)$7.99









