# PFD Calc - Prime Factorization — Prime factor decomposition.

> Prime factor decomposition. (iPhone/iPad app by Kazuhisa Kobayashi.)

- Source: https://appshunter.io/ios/app/pfd-calc-prime-factorization/id6737405828 (this page in markdown: same URL + `.md`)
- Developer: [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 14 MB
- Languages: American English, Japanese
- Released: 2024-10-29
- Data updated: 2026-07-24
- User reviews in markdown: https://appshunter.io/ios/app/pfd-calc-prime-factorization/id6737405828/reviews.md

## What is PFD Calc?

The app calculates prime factorization.


## Version history (last 5 releases)

### 1.1.3 — 2026-07-17

Bug fixes and performance improvements.

### 1.1.2 — 2026-06-13

Performance improvements and bug fixes for a more stable experience.

### 1.1.1 — 2025-11-12

Improved calculation speed.

### 1.1.0 — 2025-11-05

Added the ability to set the appearance mode.

### 1.0.7 — 2025-06-11

Bug fixes and performance improvements.

## Apps similar to PFD Calc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Find Prime Num](https://appshunter.io/ios/app/find-prime-num/id1505409395) | 5.0 (1) | Free | Education |
| [Big Number Calculator+](https://appshunter.io/ios/app/big-number-calculator-plus/id1541255205) | 3.7 (3) | Free | Education |
| [Prime Factors](https://appshunter.io/ios/app/prime-factors/id741746948) | 3.7 (24) | $0.99 | Education |
| [The Prime Number Finder](https://appshunter.io/ios/app/the-prime-number-finder/id6741829020) | 5.0 (2) | Free | Education |
| [瞬間素因数分解 Prime Factorization](https://appshunter.io/ios/app/prime-factorization/id6478605149) | — | Free | Education |
| [Prime Checker](https://appshunter.io/ios/app/prime-checker/id389112910) | 5.0 (3) | Free | Education |

## More apps by Kazuhisa Kobayashi

- [Easy Print Address](https://appshunter.io/ios/app/easy-print-address/id1580881998)
- [Housie Bingo Card Maker](https://appshunter.io/ios/app/housie-bingo-card-maker/id1597237424)
- [SlideSnap: Photo Tile Puzzle](https://appshunter.io/ios/app/slidesnap-photo-tile-puzzle/id1623936202)
- [CSV Master](https://appshunter.io/ios/app/csv-master/id1633580928)
- [Kitchen Timer Clock](https://appshunter.io/ios/app/kitchen-timer-clock/id1645240832)
- [Show IDFA](https://appshunter.io/ios/app/show-idfa/id1658957983)

All apps by Kazuhisa Kobayashi: https://appshunter.io/developer/1580882000

## Related topics

[prime factorization](https://appshunter.io/ios/topics/prime-factorization)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-24.*