Gamma Guru Downloads & RevenueGamma Guru · App Store
Gamma Guru is #148 in Reference Paid in United States and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperMatthew Kiser
CategoryReference
Price3.99 USD
Released
Rating★ 5.0 (2)
Version1.5
Age rating4+
First seen by us
7 Nov 2026
7 Nov 2026Full timeline · 3 events
- 🆕Gamma Guru first spotted by AppInsider#50 in Top Paid · Reference · United States
- 📦Gamma Guru version 1.5Updated for latest iOS requirements. Improved isotope search and list navigation.
- 🆕Gamma Guru released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
2 ratings
Measured
Best rank now
#148
Reference PaidMeasured
Gamma Guru on the App Store
App details
App ID
1610890905
Publisher
Matthew Kiser
On the store since
Feb 2022
4 years on the store
Minimum OS
iOS 15.2+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
3 MB
Also listed in
Education
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | ReferencePaid | #148 |
Apps near Gamma Guru on the chart
Reference Paid, around #148.
Ratings
App Store, worldwide.
Rating
5.0 ★
2 ratings
Measured
Ratings
2
Measured
About Gamma Guru
Gamma Guru provides fast, convenient access to a library of over 400 radioisotopes. Simply select an isotope of interest from the Isotope Library to view the associated gamma-rays and branching ratios and other information. Alternatively, enter up to three gamma-ray energies to see a list of isotopes that emit those gammas. Gamma Guru also includes radioactive decay and dose rate calculators.
Latest updates
1.5
Updated for latest iOS requirements. Improved isotope search and list navigation.