Comparison

瞬間素因数分解 Prime Factorization vs PFD Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

瞬間素因数分解 Prime Factorization

Prime factor decomposition.

Free

📚 Education

No ratingsView app →

About

瞬間素因数分解 Prime Factorization

Features

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入力された値を瞬時に素因数分解します。非指数表記／指数表記の両方で表示します。 ※最大20桁まで対応しています。 Instantly factorizes the input value into prime factors. Displays in both non-exponential notation and exponential notation. *Supports up to 20 digits.

About

PFD Calc

Features

Read full description

The app calculates prime factorization.

Screenshots

瞬間素因数分解 Prime Factorization3 screens

PFD Calc2 screens

Verdict

The call

The clearest difference is in-app purchases: PFD Calc at none against 瞬間素因数分解 Prime Factorization's 1. PFD Calc also leads on iOS requirement (15.0 vs 17.0). 瞬間素因数分解 Prime Factorization's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 瞬間素因数分解 Prime Factorization sells 1 one-off in-app purchase. PFD Calc asks for nothing beyond the download.

UpkeepUpdate frequency

瞬間素因数分解 Prime Factorization ships an update weekly, PFD Calc every 5 weeks. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 3 level

瞬間素因数分解 Prime Factorization versus PFD Calc: the parameters behind the verdict, then further details
Parameter	瞬間素因数分解 Prime Factorization	PFD Calc
Price	Free	Free
Update frequency	Weekly — better	Every 5 weeks
Ads	Yes	Yes
In-app purchases	Yes	No — better
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	17.0	15.0 — better
Further details — not scored
Size	3 MB	14 MB
Age rating	4+	4+
Developer	YUSUKE MIZUNO	Kazuhisa Kobayashi

In-app purchases

1 purchases

瞬間素因数分解 Prime Factorization

One-time1

Remove Ad$1.99

None

PFD Calc

No in-app purchases

Questions

Is 瞬間素因数分解 Prime Factorization free?

瞬間素因数分解 Prime Factorization is free to download, with in-app purchases available.

Is PFD Calc free?

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

Do 瞬間素因数分解 Prime Factorization or PFD Calc have ads?

Both 瞬間素因数分解 Prime Factorization and PFD Calc show ads.

Which is updated more often, 瞬間素因数分解 Prime Factorization or PFD Calc?

瞬間素因数分解 Prime Factorization ships an update weekly, and PFD Calc every 5 weeks. Most recently, 瞬間素因数分解 Prime Factorization was updated on September 21, 2026 and PFD Calc on September 17, 2026.