# Whois Pro vs DB50X

The clearest difference is price: Whois Pro at Free against DB50X's $9.99. Whois Pro also leads on iOS requirement (12.1 vs 14.0). DB50X's advantage is in-app purchases (none vs 1) and chart position (#189 vs unranked). On rating, ads and device support there is nothing between them.

Whois Pro is free to download; DB50X costs $9.99 up front. Whois Pro sells 1 one-off in-app purchase. DB50X asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Whois Pro against 5.0 for DB50X. That said, the two scores are not equally well evidenced: DB50X has 8 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Whois Pro | DB50X |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/whois-pro/id950862859/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/db50x/id6625971367/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#189** |
| Size | 2 MB | 7 MB |
| Requires iOS | **12.1** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AMAXIM APPS, INC](https://appshunter.io/developer/488569471) | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) |

## What reviewers say

### Whois Pro

[App page](https://appshunter.io/ios/app/whois-pro/id950862859)

This app helps you make decisions by spinning a customizable wheel. It's perfect for choosing between options, playing games, or adding fun to group activities. Add emojis and a scrolling info line to personalize your spins.

**Highlights:** Randomize any choice, Up to 8 players/choices, Customizable wheel, Add emojis, Scrolling info line, No ads

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WhoIs Premium | $1.99 | one-time |


### DB50X

[App page](https://appshunter.io/ios/app/db50x/id6625971367)

**Currently charting:** #189 Top Paid · Productivity (US App Store)

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

**Highlights:** Arbitrary precision calculations, RPN and algebraic operations, Complex numbers, vectors, matrices, Symbolic and numerical solving, Graphing and plotting, Engineering units and constants, Unicode text support

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

**In-app purchases:** none


## Frequently asked questions

### Is Whois Pro free?

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

### Is DB50X free?

DB50X costs $9.99, with no in-app purchases.

### Which has better reviews, Whois Pro or DB50X?

Whois Pro and DB50X are both rated 5.0 out of 5 on the App Store, from 1 and 8 ratings respectively.

### Do Whois Pro or DB50X have ads?

Neither Whois Pro nor DB50X shows ads.

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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.*