# Is it Prime? vs Mininigma

The clearest difference is price: Is it Prime? at Free against Mininigma's $1.99. Mininigma's advantage is rating (4.6 vs 3.2) and update cadence (every 6 months vs every 74 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Is it Prime? is free to download; Mininigma costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mininigma holds the better App Store score, 4.6 against 3.2. That said, the two scores are not equally well evidenced: Mininigma has 30 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 71% of Is it Prime?'s written reviews are positive against 91% of Mininigma's.

Is it Prime? ships an update every 74 months, Mininigma every 6 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Is it Prime? | Mininigma |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [3.2 (5 ratings)](https://appshunter.io/ios/app/is-it-prime/id326095651/reviews) | **[4.6 (30 ratings)](https://appshunter.io/ios/app/mininigma-enigma-simulator/id334855344/reviews)** |
| Number of ratings | 5 | **30** |
| Positive reviews | 71.4% of reviews | **90.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 74 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 1 MB | 35 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wismar](https://appshunter.io/developer/307757950) | [Horacio Jimenez](https://appshunter.io/developer/334855347) |

## What reviewers say

### Is it Prime?

[App page](https://appshunter.io/ios/app/is-it-prime/id326095651)

Enter any number to instantly determine if it is a prime number or not. This straightforward utility provides a quick answer to your mathematical curiosity.

**Highlights:** Prime number identification, Simple number input, Instant yes/no results

**Features:** macOS Compatibility

**In-app purchases:** none


### Mininigma

[App page](https://appshunter.io/ios/app/mininigma-enigma-simulator/id334855344)

This app simulates the historical Enigma cipher machine used during WWII. It allows users to encrypt and decrypt messages, generate machine configurations from keywords, and accurately models various Enigma machine types. Interact with other applications through copy/paste functionality.

**Highlights:** Enigma machine simulation, Message encryption and decryption, Keyword-based configuration generation, Multiple Enigma machine types supported, Rotor and plugboard configuration, Copy/Paste support

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

**In-app purchases:** none

**What reviewers like**

- 👍 Realistic Enigma simulation
- 👍 Historically accurate
- 👍 Great attention to detail
- 👍 Excellent graphics and artwork
- 👍 Informative and educational

**What reviewers complain about**

- 🐛 Audio not working after update
- 🐛 Sound issues with key presses
- 🐛 UI elements cut off on newer devices
- 🐛 Not compatible with VoiceOver
- 🐛 Help/tutorials use difficult font

**Reported bugs**

- Audio not working after latest update
- No sound from keyboard presses after update
- UI elements cut off on newer devices (iPhone X, Dynamic Island)
- App not compatible with VoiceOver screen reader
- Help and tutorials use a difficult-to-read font

**Requested features**

- Add German language support
- More Enigma models
- Add numbers to the keyboard
- Add a space bar
- Improve readability of tutorial font


## Frequently asked questions

### Is Is it Prime? free?

Is it Prime? is free to download, with no in-app purchases.

### Is Mininigma free?

Mininigma costs $1.99, with no in-app purchases.

### Which has better reviews, Is it Prime? or Mininigma?

Mininigma is rated higher. Is it Prime? averages 3.2 out of 5 from 5 ratings, while Mininigma averages 4.6 from 30 ratings.

### Do Is it Prime? or Mininigma have ads?

Neither Is it Prime? nor Mininigma shows ads.

### Which is updated more often, Is it Prime? or Mininigma?

Is it Prime? ships an update every 74 months, and Mininigma every 6 months. Most recently, Is it Prime? was updated on October 23, 2026 and Mininigma on October 26, 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.*