# PJConverter vs Coordinate map, query location

The clearest difference is price: Coordinate map, query location at Free against PJConverter's $0.99. Coordinate map, query location also leads on iOS requirement (12.0 vs 17.0). PJConverter's advantage is in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

Coordinate map, query location is free to download; PJConverter costs $0.99 up front. Coordinate map, query location sells 1 in-app purchase, starting at $1.99 per 7 days. PJConverter asks for nothing beyond the download.

PJConverter ships an update every 7 months, Coordinate map, query location every 4 months. The most recent releases landed on September 24, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PJConverter | Coordinate map, query location |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 6 MB | 48 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhikang Qin](https://appshunter.io/developer/1123601166) | [涛涛 聂](https://appshunter.io/developer/1636795518) |

## 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


### Coordinate map, query location

[App page](https://appshunter.io/ios/app/coordinate-map-query-location/id1663122050)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Latitude and Longitude Map VIP | $1.99 | per 7 days |


## Frequently asked questions

### Is PJConverter free?

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

### Is Coordinate map, query location free?

Coordinate map, query location is free to download, with in-app purchases available.

### Do PJConverter or Coordinate map, query location have ads?

Neither PJConverter nor Coordinate map, query location shows ads.

### Which is updated more often, PJConverter or Coordinate map, query location?

PJConverter ships an update every 7 months, and Coordinate map, query location every 4 months. Most recently, PJConverter was updated on September 24, 2026 and Coordinate map, query location on October 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.*