Version 1.2 • New: Local radiation Map. Record your readings geotagged to where you took them and see them as a colour-coded overlay (count rate or dose rate). Tap the locate button to centre on your position - no recording required. • New: Optional community map layer, showing public RAYSID readings from raysid.com. Toggle it on or off anytime. • Improved isotope identification: more reliable peak detection on high-count spectra, so clear peaks are highlighted as expected. Your measurements, location, and recorded map stay on your device. The map is recorded only while the app is open (no background tracking).

Version 1.1 - User Calibration & Improved Isotope ID • Energy calibration: anchor the keV scale to known peaks from a calibration source for accurate isotope identification. Cubic-spline interpolation across 1–4 calibration points; per-device and per-range storage so each RAYSID and energy range remembers its own calibration. • Pick calibration anchors directly from detected peaks in your live spectrum, choose from a library of common gamma lines (Cs-137, K-40, U-238 chain, Th-232 chain, Co-60, Eu-152, Am-241, more), or enter values manually. • Isotope Detail Sheet: tap any isotope match to see its library reference spectrum overlaid on yours, a peak-by-peak comparison table, half-life and decay-mode metadata, and the detected peak list. • Isotope ID accuracy: matcher now intensity-weights peak comparisons and penalizes missing high-confidence library lines. Fixes false-positive matches where peaks aligned numerically but the source was different. • Cleaner peak detection: Poisson statistical filtering removes false "peaks" in the noise floor at high energies. • UI polish: denser keV-axis ticks on the spectrum chart, calibration point editor with monotonicity warnings, immediate post-Apply feedback.