# Find Prime Num vs NumAndShape

The clearest difference is in-app purchases: Find Prime Num at none against NumAndShape's 6. Find Prime Num also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. NumAndShape sells 6 one-off in-app purchases. Find Prime Num asks for nothing beyond the download.

Find Prime Num ships an update every 4 days, NumAndShape every 2 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Find Prime Num | NumAndShape |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/find-prime-num/id1505409395/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free | — |
| Size | 8 MB | 5 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duo Pisceses, Inc.](https://appshunter.io/developer/850707063) | [ken morobayashi](https://appshunter.io/developer/954811891) |

## What reviewers say

### Find Prime Num

[App page](https://appshunter.io/ios/app/find-prime-num/id1505409395)

Quickly determine if a number is prime and find one of its factors. This app also measures calculation time to help you benchmark your device's processing speed. Share your results and compare performance with others.

**Highlights:** Calculate prime numbers up to 64-bit integers, Measure processing time for device speed comparison, Find one factor of a non-prime number, Share calculation results, User-friendly interface

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

**In-app purchases:** none


### NumAndShape

[App page](https://appshunter.io/ios/app/numandshape/id6468994873)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| prime number | $0.49 | one-time |
| power | $0.49 | one-time |
| per hour | $0.49 | one-time |
| binary number | $0.49 | one-time |
| sin cos tan | $0.49 | one-time |
| NumAndShape Unlimited | $1.99 | one-time |


## Frequently asked questions

### Is Find Prime Num free?

Find Prime Num is free to download, with no in-app purchases.

### Is NumAndShape free?

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

### Do Find Prime Num or NumAndShape have ads?

NumAndShape shows ads; Find Prime Num does not.

### Which is updated more often, Find Prime Num or NumAndShape?

Find Prime Num ships an update every 4 days, and NumAndShape every 2 months. Most recently, Find Prime Num was updated on November 1, 2026 and NumAndShape on October 30, 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.*