L4D vs ERCC Messenger
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
ERCC Messenger
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ERCC Messenger is a powerful mobile control tool for venues using the Escape Room Control Centre (ERCC) system. Designed specifically for game masters and operators, this app lets you leave the control desk and still run every room with full confidence β from your iPhone or iPad. Whether youβre overseeing one room or ten, ERCC Messenger ensures you're always connected, always in control, and always ready to respond. Key Features: Full Timer Control Start and pause the timer for any room Instantly reset a roomβs time with a single tap Designed for fast, stress-free use during live games Help Needed Alerts Receive real-time alerts when a team requests help Loud sound effects and local notifications ensure you never miss a request Visual room card indicators turn red when help is needed Spoken Notifications The app can speak messages aloud using built-in voice prompts Perfect for noisy venues or when youβre multitasking Automatic 5-Minute Warnings Get notified with an audible alert when any room reaches five minutes remaining Helps ensure timely wrap-ups and smooth transitions between games Quick Access to Room Dashboards Launch directly into the full ERCC web control panel for any room Monitor progress, send hints, and manage players from anywhere Smart Server Connection Configure and save your ERCC base URL once β itβs securely remembered A live connection monitor tells you whether your server is online or offline in real time Optimized for iPhone & iPad Beautiful, intuitive design works great on all device sizes Lightweight interface perfect for mobile staff and fast decision-making Perfect For: Escape room operators running multiple games Game masters who want freedom to move while staying in control Venues using ERCC to manage timers, hints, and team progress
Screenshots
Verdict
The clearest difference is price: ERCC Messenger at $4.99 against L4D's $29.99. On update cadence, ads, in-app purchases 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 ERCC Messenger $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
L4D ships an update every 6 days, ERCC Messenger every 9 days. The most recent releases landed on September 6, 2026 and September 10, 2026 respectively.
| Parameter | L4D | ERCC Messenger |
|---|---|---|
| Price | $29.99 | $4.99 β better |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 6 days β better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | β |
| Devices | iPhone | iPhone, iPad β better |
| Requires iOS | 16.0 β better | 17.6 |
| Further details β not scored | ||
| Size | 34 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Joshua Riley | Rock Escape Rooms Limited |
In-app purchases
L4D
No in-app purchases
ERCC Messenger
No in-app purchases









