Radiacode 102
The cheapest way to get a pocket gamma spectrometer with a polished phone app. A great everyday detector for collectors and travellers.
Amazon $249$249
The Radiacode 102 is the better geiger counter overall, rated 3.7 to 2.7. The Radiacode 102 leads on features. The Aranet Radiation wins on price. The Aranet Radiation costs $110 less ($139 vs $249).
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.
Aranet Radiation
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$139
Which should you buy?
- Choose the Radiacode 102 for features (data logging, phone or cloud connection, gamma spectrum vs data logging, phone or cloud connection).
- Choose the Aranet Radiation for price ($139 vs $249).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every scintillation and solid-state geiger counter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Radiacode 102 | Aranet Radiation |
|---|---|---|
| Overall rating | 3.7/5 | 2.7/5 |
| Sensitivity 25% | 78 1,800 CPM per µSv/h (Cs-137) | 0 sensitivity not published, scored as lowest |
| Radiation types 20% | 40 gamma, X-ray, beta | 40 gamma, X-ray, beta |
| Dose-rate range 15% | 33 reads up to 1,000 µSv/h | 33 reads up to 1,000 µSv/h |
| Features 15% | 100 data logging, phone or cloud connection, gamma spectrum | 70 data logging, phone or cloud connection |
| Price 15% | 49 $249 | 70 $139 |
| Warranty 10% | 67 2-year warranty | 0 warranty not published, scored as none |
Specifications
| Radiacode 102 | Aranet Radiation | |
|---|---|---|
| Detection | ||
| Detector | Scintillator | Solid-state sensor |
| Tube or crystal | CsI(Tl) crystal | PIN diode |
| Radiation types | β γ X | β γ X |
| Sensitivity | 1,800 CPM per µSv/h (Cs-137) | - |
| Max dose rate | 1,000 µSv/h | 1,000 µSv/h |
| Energy range | - | 80 to 1,500 keV |
| Gamma spectrum | Yes | No |
| Energy resolution (662 keV) | 9.5 % | - |
| Features | ||
| Data logging | Yes | Yes |
| Connection | Bluetooth | Bluetooth |
| Battery | 1000 mAh rechargeable | 2 x AA |
| Battery life | 200 h | - |
| Build | ||
| Weight | 65 g | 107 g |
| Ingress rating | - | IP20 |
| Warranty | 2 years | - |