CardSense vs UnToxic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CardSense
This app allows you to perform a magic trick where you appear to know your friend's chosen card. It's a tool for magicians or anyone wanting to impress friends with a simple card sensing illusion.
- Reveal chosen card
- Surprise friends
- Magic force selection
- Tool for magicians
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CardSense — Magic, Ready to Perform. CardSense is a modern card magic toolkit for magicians who want to create impossible-looking moments with an iPhone. From selecting a card to visual transformations, photo reveals, eye reveals and custom incoming-call effects, CardSense helps you prepare and perform powerful card magic with simple, controlled interactions. Designed for live performance, CardSense puts practical magic tools in one place. The goal is simple: spend less time managing complicated setup and more time performing. CREATE IMPOSSIBLE CARD MOMENTS • Crystal Liquid Lens See through your card with a cinematic liquid-lens effect. Turn an ordinary card into a striking visual moment with a movie-style lens effect. • 52 Cards. One Touch. A fast and elegant way to work with all 52 cards. Create a magical card-selection moment with a single touch, designed for smooth performance. • Card Mirror Create a precise mirrored copy of a playing card in seconds. A visual effect designed to make the impossible feel effortless. • Hidden Eye Reveal Create a surprising card reveal through the eyes. A memorable visual moment designed to fit naturally into your routine. • Custom Incoming Call Turn an incoming phone call into part of your performance. Customize the reveal and make the phone itself become part of the magic. • Card in Photo Place a selected card into a photo and create the reveal in seconds. Transform an ordinary image into an unexpected card-magic moment. • Fake Scanning A playful fake scanning effect designed to fool your friends. It looks like a card scan while giving you a fun way to create a surprise reveal. BUILT FOR MAGICIANS CardSense is designed around the realities of performing magic with a phone. Keep your preparation simple, control the presentation, and let the technology stay in the background while you focus on your spectator. Use CardSense for close-up magic, casual performances, social gatherings, practice sessions and modern card routines. Whether you are a card magician, mentalist, hobbyist or simply someone who enjoys surprising friends, CardSense gives you a collection of phone-powered magic tools to explore. A MODERN MAGIC TOOLKIT CardSense combines card selection, visual card effects, photo magic, phone-based reveals and interactive performance ideas in one app. Explore different routines in Magic Lab, practice your timing, and choose the effects that fit your style. The app is designed to complement traditional playing cards rather than replace them. Your deck remains at the center of the performance; your iPhone becomes another secret tool in your magician’s toolkit. CLASSIC CARD MAGIC, REIMAGINED CardSense brings familiar card-magic ideas into a modern smartphone experience. Instead of relying on a complicated-looking interface, the app focuses on clean presentation, controlled interactions and moments that feel natural during a performance. Use one effect on its own or combine different tools to create your own routine. Build a sequence around card selection, a visual reveal, a photograph, an incoming call or an unexpected appearance on screen. YOUR TRICK. YOUR ROUTINE. YOUR WAY. CardSense is made for performers who want technology to support the magic, not distract from it. Prepare your effect, hand the phone over when needed, and create a moment your spectator will remember. Explore CardSense and discover a new way to perform card magic with your iPhone.
UnToxic
This utility app functions as a standard calculator but secretly forces any addition-only expression to equal 1,024. It can be launched instantly from NFC tags on other iPhones, making it ideal for magic tricks and performances without needing installation.
- Standard calculator appearance
- Addition-only expressions force to 1,024
- Instant App Clip launch from NFC
- Built-in NFC tag writer
- Offline functionality
- Configurable force number
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A professional magician's utility for entertainment purposes only. MagiCalc looks and behaves exactly like the iPhone's calculator, with one secret: any expression consisting only of additions always evaluates to 1,024 when = is pressed. Your spectator can add any numbers they like, birthdays, phone digits, "random" amounts — and the total is always 1,024. Any expression containing subtraction, multiplication, or division computes honestly, so the calculator survives casual inspection and real math. That makes 1,024 a "force": you predict it in a sealed envelope, reveal it as a page number, a locker combination, a Wi-Fi password — the routine is yours. The force number is configurable. THE SUPERPOWER: NO INSTALL, ANY IPHONE You don't need your phone — or theirs to have anything installed. Tap one of your NFC tags to any iPhone (XS or later) and an App Clip of this calculator opens in seconds. No App Store visit, no account, nothing left behind. The full app includes a built-in NFC tag writer, so you can prepare tags yourself: stick one under a table, inside a book, behind a business card. WHAT IT IS • Pixel-faithful iOS-style expression calculator • Addition-only expressions force to 1,024 — everything else is honest • Instant App Clip launch from NFC tags on borrowed phones • Built-in NFC tag writer • Works fully offline, collects zero data WHAT IT ISN'T A calculator for real arithmetic involving only addition. That's the trick. If you want honest sums, use the built-in Calculator app. For performers, mentalists, and anyone who wants to hand a spectator a calculator and already know the answer.
Screenshots
Verdict
The clearest difference is update cadence: UnToxic at every 5 days against CardSense's every 15 months. CardSense's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CardSense ships an update every 15 months, UnToxic every 5 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | CardSense | UnToxic |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 15 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 81 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Kam Hung Cheung | MagicSeth Productions |
Customer experience
CardSense
UnToxic
In-app purchases
CardSense
No in-app purchases
UnToxic
No in-app purchases









