# Converter Pro vs WD3

The clearest difference is review sentiment: Converter Pro at 74% against WD3's 0%. Converter Pro also leads on rating (4.4 vs 1.0) and ratings volume (45 vs 4). WD3's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Converter Pro sells 1 one-off in-app purchase. WD3 asks for nothing beyond the download.

Converter Pro holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Converter Pro has 45 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 74% of Converter Pro's written reviews are positive against 0% of WD3's.

Converter Pro ships an update every 3 months, WD3 fortnightly. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Converter Pro | WD3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (45 ratings)](https://appshunter.io/ios/app/converter-pro-unit-converter/id663948608/reviews)** | [1.0 (4 ratings)](https://appshunter.io/ios/app/wd3/id1352908324/reviews) |
| Number of ratings | **45** | 4 |
| Positive reviews | **74.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 43 MB | 94 MB |
| Requires iOS | 18.0 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Panoramic Software Inc.](https://appshunter.io/developer/329216366) | [传林 方](https://appshunter.io/developer/699727053) |

## What reviewers say

### Converter Pro

[App page](https://appshunter.io/ios/app/converter-pro-unit-converter/id663948608)

This app provides a comprehensive tool for converting units and currencies. It offers over 3000 unit conversions across 19 categories and daily updated rates for over 150 world currencies. Customize the look with different skins and access past calculations.

**Highlights:** 3000+ unit conversions, 150+ currency rates, 19 conversion categories, Daily currency rate updates, Customizable skins and color schemes, Tape View for recent equations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $3.99 | one-time |


### WD3

[App page](https://appshunter.io/ios/app/wd3/id1352908324)

This utility app allows users to remotely monitor and control smart door sensors. Receive instant push notifications when a door is opened, view its current status, and set up alarm calls for immediate alerts.

**Highlights:** Remote door sensor status monitoring, Push notifications for door openings, Configurable alarm phone calls, Real-time door status display, Parameter settings for door sensors

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

**In-app purchases:** none


## Frequently asked questions

### Is Converter Pro free?

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

### Is WD3 free?

WD3 is free to download, with no in-app purchases.

### Which has better reviews, Converter Pro or WD3?

Converter Pro is rated higher. Converter Pro averages 4.4 out of 5 from 45 ratings, while WD3 averages 1.0 from 4 ratings.

### Do Converter Pro or WD3 have ads?

Converter Pro shows ads; WD3 does not.

### Which is updated more often, Converter Pro or WD3?

Converter Pro ships an update every 3 months, and WD3 fortnightly. Most recently, Converter Pro was updated on November 6, 2026 and WD3 on November 2, 2026.

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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.*