# Prime Factorization vs Panecal Scientific Calculator

The clearest difference is ads: Prime Factorization at none against Panecal Scientific Calculator's shown. Prime Factorization also leads on review sentiment (100% vs 76%) and monetization model (free vs ad-supported). Panecal Scientific Calculator's advantage is rating (4.8 vs 4.4) and ratings volume (2K vs 5). On price, update cadence, 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.

Panecal Scientific Calculator holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Panecal Scientific Calculator has 2K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 100% of Prime Factorization's written reviews are positive against 76% of Panecal Scientific Calculator's, so the app with the better star average is not the one people write more warmly about.

Prime Factorization ships an update every 3 months, Panecal Scientific Calculator every 2 months. The most recent releases landed on October 15, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Prime Factorization | Panecal Scientific Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/prime-factorization/id528980227/reviews) | **[4.8 (2K ratings)](https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803/reviews)** |
| Number of ratings | 5 | **2K** |
| Positive reviews | **100.0% of reviews** | 75.8% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 2 MB | 34 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sohei Mori](https://appshunter.io/developer/528980270) | [Noriyasu Kutsuzawa](https://appshunter.io/developer/668500806) |

## What reviewers say

### Prime Factorization

[App page](https://appshunter.io/ios/app/prime-factorization/id528980227)

This utility app breaks down integers into their prime factors. It also calculates the number and sum of divisors, lists all divisors, and identifies specific number types like prime, perfect, abundant, or deficient.

**Highlights:** Prime factorization of integers, Calculate number of divisors, Sum of divisors calculation, List all divisors, Identify prime numbers, Identify perfect, abundant, deficient numbers

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

**In-app purchases:** none


### Panecal Scientific Calculator

[App page](https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803)

This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.

**Highlights:** Formula editing with cursor and swipe, Reuse past formulas, Variable memory for calculations, Binary, octal, decimal, hexadecimal conversion, M+/M- memory functions, Angle unit settings (DEG, RAD, GRAD)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great button layout
- 👍 Intuitive and user-friendly
- 👍 Powerful scientific functions
- 👍 Convenient display and history
- 👍 Useful for various fields (construction, engineering, etc.)

**What reviewers complain about**

- 🐛 Calculation errors in some cases
- 🐛 Glitches and crashes reported
- 🔍 Lack of engineering prefixes
- 📺 Ads can be intrusive
- 🔍 Suboptimal button placement and sizing

**Reported bugs**

- Inability to switch back from Bin mode
- Calculation history not scrolling properly
- Inconsistent behavior with certain operations

**Requested features**

- Unit conversion tools
- Customizable font and icon
- Ability to rotate screen
- More advanced programming features
- Improved order of operations handling


## Frequently asked questions

### Is Prime Factorization free?

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

### Is Panecal Scientific Calculator free?

Panecal Scientific Calculator is free to download, with no in-app purchases.

### Which has better reviews, Prime Factorization or Panecal Scientific Calculator?

Panecal Scientific Calculator is rated higher. Prime Factorization averages 4.4 out of 5 from 5 ratings, while Panecal Scientific Calculator averages 4.8 from 2K ratings.

### Do Prime Factorization or Panecal Scientific Calculator have ads?

Panecal Scientific Calculator shows ads; Prime Factorization does not.

### Which is updated more often, Prime Factorization or Panecal Scientific Calculator?

Prime Factorization ships an update every 3 months, and Panecal Scientific Calculator every 2 months. Most recently, Prime Factorization was updated on October 15, 2026 and Panecal Scientific Calculator on October 29, 2026.

---

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