# Corpad Cathodic Protection — Corrosion Data Collection

> Corrosion Data Collection (iPhone/iPad app by Andrei Lomtev.)

- Source: https://appshunter.io/ios/app/corpad-cathodic-protection/id6471076169 (this page in markdown: same URL + `.md`)
- Developer: [Andrei Lomtev](https://appshunter.io/developer/1714768821)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.5 · 36 MB
- Languages: English
- Released: 2023-11-16
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/corpad-cathodic-protection/id6471076169/reviews.md

## What is Corpad Cathodic Protection?

Key Features:
- Capture Images: Take photos of sites to enhance your survey data.
- GPS Integration: Assign GPS coordinates to your survey sites and display data on an interactive map.
- NFC and QR code labels: Write and read test point and rectifier information to/from NFC tags and QR codes.
- Data Analysis: Utilize our built-in calculator for quick cathodic protection value calculations.
- Multimeter Connectivity: Connect a Bluetooth multimeter for real-time data capture.
- Import and Export: Import data from XLSX, CSV files. Import geodata from KML, KMZ, GEOJSON and GPX files. Export surveys as CSV, KML, and share survey files between devices.

Say goodbye to paper-based surveys and hello to a more efficient, digital solution.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Corpad Premium | $9.99 | per month |



## Version history (last 5 releases)

### 1.6.4 — 2025-07-21

- All premium features are now available for free (taking and saving photos, connecting bluetooth multimeter, creating QR code and NFC labels with site information and adding geo-data layers on the map from .kml and .gpx)
- GPS coordinates can be now assigned to the corrosion calculations and their markers will be displayed on the map.
- Fixed bug with geolocation permission error.

### 1.6.3 — 2025-02-18

- Added digital average and low-pass filters and for DC voltage capture (for PokitPro). Improved accuracy, but decreased capture rate.
- Fixed bug when not allowing location permissions on iOS caused app to crash.

### 1.6.2 — 2025-02-09

- Added support for a new BLE multimeter model (AI DVM 2130).
- Added multimeter screen, where users can view currently measured values, adjust modes, ranges and plot a graph.
- Increased accuracy for determining ON/OFF shifts for smaller cycles.
- Added network time sync for ON/OFF shift detection (works as alternative to GPS sync).
- Added new default potential type - AC.
- Fixed bug with QR code export on iOS.
- Minor layout adjustments.

### 1.6.1 — 2024-12-15

- Fixed bug when moving marker on the map could remove comments
- Fixed bug when compass modal crushed the app after Dec 10, 2024

### 1.6 — 2024-12-03

Added QR code label support.
More filters added.
Added support for .xlsx, .geojson and .kmz files.
Fixed bug when sorting list by distance caused error.
Fixed bug when exported KML markers were missing.

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## More apps by Andrei Lomtev

- [RMU Commander](https://appshunter.io/ios/app/rmu-commander/id6752546651)

All apps by Andrei Lomtev: https://appshunter.io/developer/1714768821

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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 2026-06-01.*