# dnCalc vs Unlock by JM Magic

The clearest difference is update cadence: Unlock by JM Magic at every 3 days against dnCalc's fortnightly. dnCalc's advantage is iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

dnCalc ships an update fortnightly, Unlock by JM Magic every 3 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | dnCalc | Unlock by JM Magic |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free | — |
| Size | 15 MB | 36 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Devious-Monkey](https://appshunter.io/developer/388388527) | [Bhavik Shah](https://appshunter.io/developer/1895343201) |

## 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


### Unlock by JM Magic

[App page](https://appshunter.io/ios/app/unlock-by-jm-magic/id6769700887)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is dnCalc free?

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

### Is Unlock by JM Magic free?

Unlock by JM Magic is free to download, with no in-app purchases.

### Do dnCalc or Unlock by JM Magic have ads?

Neither dnCalc nor Unlock by JM Magic shows ads.

### Which is updated more often, dnCalc or Unlock by JM Magic?

dnCalc ships an update fortnightly, and Unlock by JM Magic every 3 days. Most recently, dnCalc was updated on November 4, 2026 and Unlock by JM Magic on October 31, 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.*