Birthdayz vs L4D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Birthdayz
This app allows magicians to secretly write a chosen playing card and a birthday present to any date in the iPhone calendar. It also predicts famous people sharing a birthday and offers customizable force lists.
- Secretly write playing cards to dates
- Predict birthday presents
- Add custom force lists
- Reveal famous birthdays
- Uses iPhone calendar
- Sequel to MagiDate
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The card to a calendar plot, having an emotional hook due to birthdays/anniversaries etc, has always been popular with magicians. Well imagine now, being able to do that classic effect but without the use of a traditional diary(s), but simply using the calendar on your iPhone. I bring you BIRTHDAYZ or BDZ. BDZ will secretly write a playing card of your choice to any date in the calendar. BOOM! What’s more, BDZ can also write a birthday present of your choice to that date as well! So you can predict not only the birthday card but also the birthday present too. In addition, you can add your own force lists and edit existing ones. It’s like the fantastic Digital Force Bag but using your calendar. And finally, you will also be able to tell the spectator the name of a famous person who shares their special day. Have a magical birthday. Birthdayz was created by Sean Goodman as a sequel to his effect MagiDate which was released back in 2015, Birthdayz was developed by Joshua Riley
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
Screenshots
Verdict
The clearest difference is price: Birthdayz at Free against L4D's $29.99. L4D's advantage is in-app purchases (none vs 1). On review sentiment, update cadence, ads and device support 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
Birthdayz is free to download; L4D costs $29.99 up front. Birthdayz sells 1 one-off in-app purchase. L4D asks for nothing beyond the download.
Birthdayz ships an update every 11 days, L4D every 8 days. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.
| Parameter | Birthdayz | L4D |
|---|---|---|
| Price | Free — better | $29.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 days | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 5 MB | 34 MB |
| Age rating | 4+ | +4 |
| Developer | Sean Goodman | Joshua Riley |
Customer experience
Birthdayz
L4D
In-app purchases
Birthdayz
- Birthdayz App$44.99
L4D
No in-app purchases
