Comparison

CALAD vs LetterRack

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

Head to head
About

CALAD

Features
Read full description

With this application you can surprise your audience by revealing a card of your choice. With this application, you can send a card number to your CALAD and configure your CALAD.

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

CALAD3 screens
LetterRack4 screens

Verdict

The call

The clearest difference is in-app purchases: CALAD at none against LetterRack's 3. CALAD also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (11.0 vs 26.4). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. LetterRack sells 3 in-app purchases, starting at $3.99 per month. CALAD asks for nothing beyond the download.

UpkeepUpdate frequency

CALAD ships an update every 3 days, LetterRack every 3 weeks. The most recent releases landed on September 28, 2026 and October 12, 2026 respectively.

Scorecard3 real differences ยท 3 level
CALAD versus LetterRack: the parameters behind the verdict, then further details
ParameterCALADLetterRack
PriceFreeFree
Update frequencyEvery 3 days โ€” betterEvery 3 weeks
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, Apple Watch
Requires iOS11.0 โ€” better26.4
Further details โ€” not scored
Size38 MB28 MB
Age rating4+4+
DeveloperBlue SourceVincent Launay

In-app purchases

None

CALAD

No in-app purchases

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 CALAD free?
CALAD is free to download, with no in-app purchases.
Is LetterRack free?
LetterRack is free to download, with in-app purchases available.
Do CALAD or LetterRack have ads?
Neither CALAD nor LetterRack shows ads.
Which is updated more often, CALAD or LetterRack?
CALAD ships an update every 3 days, and LetterRack every 3 weeks. Most recently, CALAD was updated on September 28, 2026 and LetterRack on October 12, 2026.

Other comparisons