A Bluetooth detector sends readings to a phone app, where you can see graphs, set alarms and record a route on a map. A Wi-Fi counter instead uploads readings to an online map on its own, which suits a counter left running at home. Detectors that offer Bluetooth only as a paid add-on are not included here.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Best Geiger Counters With a Phone App: Beta-gamma Geiger counters
- GQ GMC-500+#1 of 2Full review
The GQ to buy if you want a counter that keeps working at high dose rates. It suits emergency kits as well as everyday monitoring.
Amazon $128$128GM tube138 CPM/µSv/h42,500 µSv/h - GQ GMC-500#2 of 2Full review
A good value desk or window monitor that posts readings online over Wi-Fi. Pick the 500+ if you want readings at very high levels.
Amazon $118$118GM tube138 CPM/µSv/h4,250 µSv/h
Best Geiger Counters With a Phone App: Alpha-beta-gamma counters
- GQ GMC-600 Pro#1 of 1Full review
The best value alpha-capable counter, with the same pancake tube as meters costing twice as much. A strong pick for checking surfaces, glass and minerals.
Amazon $298$298Mica window GM tube348 CPM/µSv/h4,250 µSv/h
Best Geiger Counters With a Phone App: Scintillation and solid-state
- Radiacode 110#1 of 5Full review
The best detector for finding and identifying weak sources, from uranium glass to contaminated finds. Pair it with a high-range meter if you want emergency coverage.
Amazon $399$399Scintillator4,620 CPM/µSv/h400 µSv/h - Radiacode 102#2 of 5Full review
The cheapest way to get a pocket gamma spectrometer with a polished phone app. A great everyday detector for collectors and travellers.
Amazon $249$249Scintillator1,800 CPM/µSv/h1,000 µSv/h - Radiacode 103#3 of 5Full review
The Radiacode for people who mainly want isotope identification in a pocket size. If you just want dose readings, the 102 is enough.
Amazon $319$319Scintillator1,800 CPM/µSv/h1,000 µSv/h - Radiacode Zero#4 of 5Full review
A sensitive pocket dosimeter that still works in a real emergency. Choose it over a spectrometer if dose readings matter more than isotope identification.
Amazon $299$299Scintillator960 CPM/µSv/h9,000,000 µSv/h - Aranet Radiation#5 of 5Full review
A set-and-forget home radiation monitor with a long battery life and a tidy app. It is not a tool for checking samples.
Amazon $139$139Solid-state sensor-1,000 µSv/h
