# PJConverter vs IUV

The clearest difference is review sentiment: PJConverter at 50% against IUV's 0%. PJConverter also leads on in-app purchases (none vs 3). IUV's advantage is price (Free vs $0.99) and update cadence (weekly vs every 7 months). On ads and device support there is nothing between them.

IUV is free to download; PJConverter costs $0.99 up front. IUV sells 3 in-app purchases, starting at $1.99 per month. PJConverter asks for nothing beyond the download.

PJConverter ships an update every 7 months, IUV weekly. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | PJConverter | IUV |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.5 (2 ratings)](https://appshunter.io/ios/app/iuv/id1565296362/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Paid | **Freemium** |
| Size | 6 MB | 201 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhikang Qin](https://appshunter.io/developer/1123601166) | [成都开心音符科技有限公司](https://appshunter.io/developer/1493374754) |

## What reviewers say

### PJConverter

[App page](https://appshunter.io/ios/app/pjconverter/id1123601167)

This tool offers precise coordinate transformations for GIS, surveying, and engineering professionals. It supports thousands of global coordinate systems and allows for custom projection creation with real-time validation and visual previews. Streamline your spatial data management with this efficient utility.

**Highlights:** Professional-grade conversion engine, Extensive library of coordinate systems, Customizable projection creation, Visual projection previews, Flexible format support, Intuitive user interface

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

**In-app purchases:** none


### IUV

[App page](https://appshunter.io/ios/app/iuv/id1565296362)

Customize your phone's desktop with a variety of aesthetic widgets, including photo walls, to-do lists, weather forecasts, and countdowns. Access frequently used apps and information with a single tap. Personalize your lock screen with shortcuts and commemorative dates.

**Highlights:** Customizable widgets, Photo wall widget, Weather forecast widget, Countdown and anniversary widgets, 4K wallpapers, Theme icon packs, Quick launch shortcuts

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP连续包月 | $1.99 | per month |
| VIP连续包年 | $4.99 | per year |
| 终身会员 | $9.99 | one-time |


## Frequently asked questions

### Is PJConverter free?

PJConverter costs $0.99, with no in-app purchases.

### Is IUV free?

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

### Do PJConverter or IUV have ads?

Neither PJConverter nor IUV shows ads.

### Which is updated more often, PJConverter or IUV?

PJConverter ships an update every 7 months, and IUV weekly. Most recently, PJConverter was updated on September 24, 2026 and IUV on October 4, 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.*