Comparison

VRTX vs LetterRack

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

Head to head
About

VRTX

This tool instantly generates acrostics for any word, perfect for creating unique storytelling routines in magic tricks. It offers easy export options and integrates with other magic applications for advanced functionality.

Highlights
  • Instant acrostic generation
  • Creative storytelling routines
  • Easy export to notes or sharing
  • Seamless API integration with magic apps
  • Dice-controlled acrostic selection
  • Expanded dictionary options
Features
Read full description

------------------------- • WELCOME TO VRTX • ------------------------- Created by Eddy Bouchenak and Guillaume 'GB' Bellut VRTX (pronounced vertex) is an acrostic generator design for magic tricks. ------------------------- Core Features (Included) ------------------------- • Instant Acrostic Generation – Generate an acrostic for any word with a single tap. • Creative Freedom – Use generated words to craft unique storytelling routines. • Easy Export – Save acrostics directly into a note or share them effortlessly. ------------------------- Powerful Add-Ons (Available Separately) ------------------------- • Seamless API Integration – Connect VRTX with other magic apps like Inject, Elips, WikiTest, and more. • Dice-Controlled Acrostics – Manually select a dice value or sync with Kinetic Mental Dice for automatic positioning. • Custom API Output – Export generated acrostics to any app or system of your choice (Glyphs, Voila, Hydra...). • Expanded Dictionaries – Unlock additional word lists to refine and customize your acrostic possibilities. VRTX is part of the new "In The Middle" (ITM) generation of magic apps, acting as a seamless bridge between applications—receiving input from one app, transforming it, and sending it to another. Please note: TV & Internet rights are not included with any of our products.

About

LetterRack

Features
Read full description

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

VRTX4 screens
LetterRack4 screens

Verdict

The call

The clearest difference is iOS requirement: VRTX at 16.6 against LetterRack's 26.4. On price, update cadence, 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. VRTX sells 23 one-off in-app purchases and LetterRack sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 26, 2026 and September 12, 2026 respectively.

Scorecard1 real difference · 9 level
VRTX versus LetterRack: the parameters behind the verdict, then further details
ParameterVRTXLetterRack
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS16.6 — better26.4
Further details — not scored
Size99 MB28 MB
Age rating4+4+
DeveloperGuillaume BellutVincent Launay

In-app purchases

23 purchases

VRTX

One-time23
  • Dizionario delle destinazioniFree
  • Dicionário de DestinoFree
  • ReisezielwörterbuchFree
Show 20 more
  • Dictionnaire de destinationsFree
  • Destinations DictionaryFree
  • Dizionario dei marchi$4.99
  • Dizionario degli animali$4.99
  • Dizionario degli oggetti$4.99
  • Dicionário de Objetos$4.99
  • Woordenboek van beroemdheden$4.99
  • Dicionário de Marcas$4.99
  • Dicionário de nomes$4.99
  • Dicionário de celebridades$4.99
  • Promi-Wörterbuch$4.99
  • Tierlexikon$4.99
  • Dictionnaire de prénoms$4.99
  • Dictionnaire d'objets$4.99
  • Animals Dictionary$4.99
  • Names Dictionary$4.99
  • Dictionnaire de marques$4.99
  • Celebrities Dictionary$4.99
  • Objects Dictionary$4.99
  • Full Version$134.99
3 purchases

LetterRack

Subscriptions2
  • Xtremagic Pass$3.991 Month
  • Xtremagic Pass$24.991 Year
One-time1
  • Full Access (One-Time Purchase)$7.99

Questions

Is VRTX free?
VRTX is free to download, with in-app purchases available.
Is LetterRack free?
LetterRack is free to download, with in-app purchases available.
Do VRTX or LetterRack have ads?
Neither VRTX nor LetterRack shows ads.
Which is updated more often, VRTX or LetterRack?
VRTX ships an update every 3 weeks, and LetterRack every 3 weeks. Most recently, VRTX was updated on September 26, 2026 and LetterRack on September 12, 2026.

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