CausewayOne Field vs RT Helper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CausewayOne Field
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Still have too much documents to read and fill? Your interventions are long, tedious and scattered? You never have the right document with you? Causeway Field is the innovative solution for you! The application provides your field operators a real digital “tool box" customizable and configurable to support your operators during their interventions: - Access content created from the web platform (checklists, forms, maintenance procedures, operating modes ...)
RT Helper
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RT Helper is a professional mobile tool for industrial radiographic testing (RT). It helps inspectors perform exposure calculations faster, avoid common mistakes. RT Helper supports both X-ray tubes and the most common isotopic sources (Se-75, Ir-192, Co-60). Designed by an experienced NDT specialist, the app focuses on accuracy, usability, and real field requirements. FREE VERSION FEATURES • Exposure time calculator for Se-75, Ir-192 and Co-60 • Exposure time calculator for all available X-ray tubes • Voltage and IQI selection based on material and thickness • Up to 4 customizable presets for quick switching between parameters • Built-in exposure timer with sound notification FOR WHOM RT Helper is created for: • RT Level I–III inspectors • NDT technicians working with film radiography • Students preparing for RT certification
Screenshots
Verdict
The clearest difference is in-app purchases: CausewayOne Field at none against RT Helper's 4. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RT Helper sells 4 in-app purchases, starting at $6.99 per month. CausewayOne Field asks for nothing beyond the download.
CausewayOne Field ships an update every 3 weeks, RT Helper fortnightly. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.
| Parameter | CausewayOne Field | RT Helper |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 161 MB | 62 MB |
| Age rating | 4+ | 17+ |
| Developer | Ermeo | Dzmitry Dubovik |
In-app purchases
CausewayOne Field
No in-app purchases
RT Helper
- RT Helper PRO – Monthly$6.991 Month
- RT Helper PRO – 3 Months$17.993 Months
- RT Helper PRO – 6 Months$29.996 Months
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- RT Helper PRO – Yearly$49.991 Year
Questions
Is CausewayOne Field free?
Is RT Helper free?
Do CausewayOne Field or RT Helper have ads?
Which is updated more often, CausewayOne Field or RT Helper?
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