L4D vs Dayzed (Mentalism)
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
L4D
This entertainment app allows users to perform a magic trick involving four-digit numbers and two bank cards. It offers multiple input methods and is designed for easy execution. The app is intended solely for amusement.
- Force any 4-digit number
- Uses two bank cards
- Multiple input methods
- Easy to perform
- Entertainment purposes only
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L4D is a magic app that allows you to force any 4 digit number using two bank cards. Multiple input methods available Easy to perform App is for entertainment purposes only
Dayzed (Mentalism)
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DAYZED - THE INSTANT DAY CALCULATOR Created by professional mentalist Paul Brook, Dayzed instantly calculates the day of the week for any spoken date. During performance, a spectator names any calendar date. The performer simply repeats that date into their own Apple Watch after starting a listening session. Dayzed instantly recognises the performerβs spoken date, calculates the correct day of the week, the iPhone then communicates the result through vibration, and displays it on the Apple Watch. Once activated, Dayzed can continue listening throughout your performance, allowing you to reveal multiple dates without stopping or restarting. Itβs automatic, performance-focused, and designed to let you concentrate on your presentation. ------ SET IT AND FORGET IT Simply start listening and perform as you normally would. Dayzed works continuously throughout your performance, automatically recognising the performerβs spoken dates as they are repeated. Your iPhone can remain in your pocket, allowing you to focus entirely on your presentation while Dayzed quietly does the work. ------ BUILT FOR PERFORMANCE Dayzed is designed specifically for real-world performance. Choose how the app behaves with options including continuous listening, Blackout Mode, lock words, Apple Watch visual confirmation, and more. Every feature is designed to make Dayzed reliable, practical and effortless to use during live performance. ------ UNLOCK MORE WITH PRO FEATURES Enhance your performance with optional Pro features (In-App Purchases): API OUTPUT - send fully custom messages containing the detected date or day of the week to your own API endpoint URL OUTPUT - send fully custom messages containing the detected date or day of the week using your preferred URL Scheme CLIPBOARD OUTPUT - automatically copy fully custom messages containing the detected date or day of the week to your deviceβs clipboard VIBRATION CODE - create your own custom vibration patterns by assigning any combination of long and short vibrations to each day of the week ------ ALWAYS EVOLVING Dayzed is designed as a living performance tool for modern mentalists, continuously refined with new features, improvements and integrations. Whether youβre performing a single demonstration or revealing multiple dates throughout an entire show, Dayzed is designed to support your performance by delivering information exactly when you need it.
Screenshots
Verdict
The clearest difference is price: L4D at $29.99 against Dayzed (Mentalism)'s $39.99. L4D also leads on in-app purchases (none vs 5) and iOS requirement (16.0 vs 18.6). On update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
L4D costs $29.99 and Dayzed (Mentalism) $39.99 up front. Dayzed (Mentalism) sells 5 one-off in-app purchases. L4D asks for nothing beyond the download.
L4D ships an update every 8 days, Dayzed (Mentalism) every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | L4D | Dayzed (Mentalism) |
|---|---|---|
| Price | $29.99 β better | $39.99 |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 8 days | Every 5 days β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Monetization | Paid | β |
| Devices | iPhone | iPhone, Apple Watch β better |
| Requires iOS | 16.0 β better | 18.6 |
| Further details β not scored | ||
| Size | 34 MB | 34 MB |
| Age rating | +4 | 4+ |
| Developer | Joshua Riley | Paul Michael Brook |
In-app purchases
L4D
No in-app purchases
Dayzed (Mentalism)
- API Output$19.99
- URL Output$19.99
- Clipboard Output$19.99
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- Vibration Code$29.99
- Unlock All$49.99








