# dnCalc vs Princess Card Trick

The clearest difference is price: dnCalc at Free against Princess Card Trick's $4.99. dnCalc also leads on update cadence (fortnightly vs every 2 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

dnCalc is free to download; Princess Card Trick costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

dnCalc ships an update fortnightly, Princess Card Trick every 2 months. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | dnCalc | Princess Card Trick |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/princess-card-trick/id6480343480/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 15 MB | 78 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Devious-Monkey](https://appshunter.io/developer/388388527) | [YU CHEN YEH](https://appshunter.io/developer/1674576975) |

## What reviewers say

### dnCalc

[App page](https://appshunter.io/ios/app/dncalc/id1309683648)

Perform amazing mathematical "experiences" to impress friends and colleagues. This app allows you to reveal secret numbers, ages, zodiac signs, and more, all without touching a calculator. It's easy to use, requires no memorization, and can be done with your eyes closed.

**Highlights:** Reveal secret numbers, Peek at ages and zodiac signs, Calculate birth day of week, Create custom formulas, Works offline, Up to 5 participants

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Princess Card Trick

[App page](https://appshunter.io/ios/app/princess-card-trick/id6480343480)

Perform a mind-reading magic trick with a deck of cards using your smartphone. In just 30 seconds, you can amaze friends by revealing the card they secretly chose, with no sleight of hand required.

**Highlights:** Mind-reading magic trick, Perform in 30 seconds, No sleight of hand, 100% automatic, Success guaranteed, Perform anytime, anywhere

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is dnCalc free?

dnCalc is free to download, with no in-app purchases.

### Is Princess Card Trick free?

Princess Card Trick costs $4.99, with no in-app purchases.

### Do dnCalc or Princess Card Trick have ads?

Neither dnCalc nor Princess Card Trick shows ads.

### Which is updated more often, dnCalc or Princess Card Trick?

dnCalc ships an update fortnightly, and Princess Card Trick every 2 months. Most recently, dnCalc was updated on October 13, 2026 and Princess Card Trick on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*