# TopoXY: Topo Survey & CRS — Stereo 70 Coordinate Converter

> Stereo 70 Coordinate Converter (iPhone/iPad app by Darius Cirjan.)

- Source: https://appshunter.io/ios/app/topoxy-topo-survey-and-crs/id6758582908 (this page in markdown: same URL + `.md`)
- Developer: [Darius Cirjan](https://appshunter.io/developer/1827010077)
- Category: Navigation, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 46 MB
- Languages: Czech, English, German, Italian, Polish, Romanian, Slovak
- Released: 2026-02-15
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/topoxy-topo-survey-and-crs/id6758582908/reviews.md

## What is TopoXY?

Engineering-grade coordinate conversion and terrain analysis for surveyors, civil engineers, and GIS professionals working across six EU countries.

TopoXY Tools converts between WGS 84 and national coordinate reference systems on device, with documented accuracy per country:

- Romania - Stereo 70 (EPSG:31700), sub-metre precision
- Poland - PUWG 1992 (EPSG:2180), sub-centimetre
- Czechia & Slovakia - S-JTSK Krovak (EPSG:5514), sub-centimetre
- Italy - Gauss-Boaga zone 2 (EPSG:3004), 1-3 m, with UTM 32N / 33N alternates
- Germany - ETRS89 / UTM 32N (EPSG:25832), sub-centimetre

Conversion runs fully offline so fieldwork keeps moving when signal drops.

TERRAIN AND MAP FEATURES
- Elevation profiles powered by Mapbox terrain data
- Slope and aspect analysis for any waypoint or route
- Contour line overlays for site reconnaissance
- Distance to nearest river, road, or peak
- Romania-only: ANCPI cadastre parcels and national ortophoto layer
- Export waypoints and routes for downstream CAD or GIS workflows

WHO IT IS FOR
Licensed land surveyors, cadastral teams, civil engineering crews, infrastructure planners, geodesy students, and GIS analysts who need a fast field companion alongside total stations, GNSS receivers, and desktop CAD. TopoXY Tools is a professional reference and planning aid, not a replacement for a licensed surveyor or a calibrated RTK rover. Always confirm cadastral results against the official national register before any legal filing.

PRIVACY AND COMPLIANCE
- No ads on the subscription tier
- GDPR Consent Mode v2 with default-deny
- Analytics gated behind explicit consent
- Location data never leaves the device unless you export it

SUBSCRIPTION
- Weekly: from €1.99 per week
- Monthly: from €3.99 per month
Prices shown in your local currency on the App Store and include any applicable VAT. Subscriptions auto-renew until cancelled in App Store settings at least 24 hours before the end of the current period.

Terms: https://topoxyapp.com/terms.html
Privacy: https://topoxyapp.com/privacy.html
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $6.99 | per month |



## Version history (last 5 releases)

### 1.7 — 2026-06-24

v1.6 adds 6-country CRS routing: Romania, Poland, Czechia, Slovakia, Italy & Germany. Engineering-grade conversion, offline-ready. Try free.

### 1.6 — 2026-06-12

v1.6 adds 6-country CRS routing: Romania, Poland, Czechia, Slovakia, Italy & Germany. Engineering-grade conversion, offline-ready. Try free.

### 1.5 — 2026-05-10

This new version of the app contains:
• GDPR consent flow(UMP)
• Privacy options in Settings
• Performance and stability improvements

### 1.1 — 2026-02-18

This new version of the app contains some minor bug fixes!

### 1.0 — 2026-02-15

No release notes.

## More apps by Darius Cirjan

- [Pdfino: PDF Editor & Scanner](https://appshunter.io/ios/app/pdfino-pdf-editor-and-scanner/id6748689545)
- [Kipply: Smart Photo Cleaner](https://appshunter.io/ios/app/kipply-smart-photo-cleaner/id6756061280)
- [AppsRank: Ranking Tracker](https://appshunter.io/ios/app/appsrank-ranking-tracker/id6762045370)

All apps by Darius Cirjan: https://appshunter.io/developer/1827010077

## Related topics

[topo](https://appshunter.io/ios/topics/topo)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*