1. Contact Support
Please include your iOS version, device model, app version, and the calculator screen involved.
Include every input value with units, the result shown by the app, and your expected reference value.
2. Support Scope
We can help with:
- Exposure calculation input and unit questions.
- Decay, barricade distance, geometric unsharpness, and exposure correction tools.
- History records, favorite presets, settings, language, theme, and field mode usage.
- Bug reports, incorrect labels, accessibility issues, and App Store listing questions.
RT Calculator has no account system, backend login, subscription, advertising setup, or cloud sync in the current release.
3. FAQ
Does RT Calculator work offline?
Yes. Core calculations and local records are designed to work offline. The current release does not use a developer-operated backend service.
Where are history and favorites stored?
They are stored locally in the app container on your device. They are not uploaded by the app to developer-operated servers.
Does the app request Camera, Location, Photos, or Microphone permissions?
No. The current release does not request those system privacy permissions.
Can I use the result directly for field exposure decisions?
No. The app is a calculation aid. Before operational use, verify results against approved procedures, source certificates, exposure charts, local radiation safety rules, and qualified professional judgment.
How should I report a suspected formula or unit issue?
Email the exact calculator name, all input values and units, the displayed output, the expected result, and the standard, chart, or derivation you used for comparison.
4. Professional and Safety Notice
RT Calculator is intended for professional radiographic testing support. It does not replace certified procedures, radiation safety controls, equipment calibration, source documentation, or supervision by qualified personnel.
5. Links
- Privacy Policy
- App Store page: pending publication