Conversion! vs Factorial Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conversion!
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Unit Converter – Fast, Accurate and Easy to Use Unit Converter is the perfect companion for quickly and accurately converting a wide variety of units. Whether you're at home, at work, in school, at university, or on the go, the app provides reliable results with an intuitive and easy-to-use interface. Features • Fast and precise unit conversions • Clean and intuitive user interface • Instant calculations while typing • Wide range of conversion categories • High calculation accuracy • Perfect for everyday use, education, engineering and professional work • Optimized for both iPhone and iPad • Simple, fast and efficient operation Available Categories Depending on the version, the app includes many conversion categories such as: • Length • Area • Volume • Weight • Speed • Temperature • Pressure • Energy • Power • Time • Angle • Digital Storage • Force • Density • Frequency • Currency and many more. Whether you need a quick conversion for everyday life or accurate engineering calculations, Unit Converter gives you reliable results in seconds.
Factorial Calculator
Easily compute the factorial of any whole number with this straightforward utility. Designed for simplicity and ease of use, it provides a quick way to get factorial results.
- Calculate factorials
- Whole number input
- Easy to use interface
- Quick results
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This Factorial Calculator helps you to calculate the factorial of a whole number in an easy way. Factorial Calculator is great application and easy to use.
Screenshots
Verdict
The clearest difference is ads: Conversion! at none against Factorial Calculator's shown. Factorial Calculator's advantage is iOS requirement (11.0 vs 26.0). On price, update cadence, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Conversion! ships an update every 20 months, Factorial Calculator every 12 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.
| Parameter | Conversion! | Factorial Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 20 months | Every 12 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerhard Lentschik | SDG CODE DOO NIS |
In-app purchases
Conversion!
No in-app purchases
Factorial Calculator
No in-app purchases
Questions
Is Conversion! free?
Is Factorial Calculator free?
Do Conversion! or Factorial Calculator have ads?
Which is updated more often, Conversion! or Factorial Calculator?
Other comparisons
