# dnCalc vs Notarized

The clearest difference is in-app purchases: dnCalc at none against Notarized's 1. dnCalc also leads on iOS requirement (11.0 vs 16.6). Notarized's advantage is update cadence (every 6 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Notarized sells 1 one-off in-app purchase. dnCalc asks for nothing beyond the download.

dnCalc ships an update fortnightly, Notarized every 6 days. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | dnCalc | Notarized |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/notarized-magic-and-mentalism/id6474781273/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 24 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Devious-Monkey](https://appshunter.io/developer/388388527) | [theory11.com](https://appshunter.io/developer/324247212) |

## 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


### Notarized

[App page](https://appshunter.io/ios/app/notarized-magic-and-mentalism/id6474781273)

This app enables mind-reading and drawing duplication using a borrowed phone. It turns any iPhone into an impression pad, allowing you to instantly see what a spectator writes or draws. Perform advanced mentalism effects with features like colored line support and lock screen mind-reading.

**Highlights:** Mind reading with borrowed phone, Drawing duplication, Impression pad functionality, Colored line support, Telegram support for thought transmission, API integration, Lock screen mind reading

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Base App Unlock | $99.99 | one-time |


## Frequently asked questions

### Is dnCalc free?

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

### Is Notarized free?

Notarized is free to download, with in-app purchases available.

### Do dnCalc or Notarized have ads?

Neither dnCalc nor Notarized shows ads.

### Which is updated more often, dnCalc or Notarized?

dnCalc ships an update fortnightly, and Notarized every 6 days. Most recently, dnCalc was updated on October 13, 2026 and Notarized on October 4, 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.*