Comparison

HPS 2025 vs ReactorN

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

HPS 2025

Features
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The official app of HPS 2025. The Health Physics Society is a professional organization whose mission is excellence in the science and practice of radiation safety. Society activities include encouraging research in radiation science, developing standards, and disseminating radiation safety information. Society members are involved in understanding, evaluating, and controlling the potential risks from radiation relative to the benefits.

About

ReactorN

Features
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Reactor N is a free way for students and the nuclear-curious to explore the U.S. nuclear industry โ€” built to help with your studies, coursework, and thesis. WHAT YOU CAN DO โ€” ALL FREE โ€ข Browse all 94 U.S. nuclear reactors in one place โ€” status, location, and key facts โ€ข Explore the energy-vs-AI-datacenter demand story reshaping the grid (the convergence layer) โ€ข Follow live regulatory activity (NRC + Federal Register) โ€ข Check energy market data (EIA) โ€ข Ask the AI copilot questions about the U.S. nuclear fleet โ€ข Prep for the reactor operator certification exam โ€” flashcards, quizzes, and progress tracking BUILT FOR STUDENTS Whether you study nuclear engineering, energy, policy, or finance, Reactor N gives you real industry data instead of a textbook โ€” useful for class projects, presentations, thesis research, and studying for the reactor operator (RO/SRO) licensing exam. Data is drawn from public sources (NRC, EIA, U.S. Federal Register) so you can trace and cite it. EVERYTHING IS FREE No account required. No subscription. No paywall. Nothing is sold in, through, or in connection with the app. Open the app and explore. ABOUT Reactor N is an independent product from OpenAgent. It aggregates publicly available information for educational and informational purposes only, and is not affiliated with or endorsed by the U.S. Nuclear Regulatory Commission, the U.S. Energy Information Administration, or any utility or reactor operator. All trademarks belong to their respective owners. Privacy Policy: https://openagent-legal.vercel.app/reactorn/privacy

Screenshots

HPS 20253 screens
ReactorN4 screens

Verdict

The call

The clearest difference is iOS requirement: HPS 2025 at 13.4 against ReactorN's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 4 level
HPS 2025 versus ReactorN: the parameters behind the verdict, then further details
ParameterHPS 2025ReactorN
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.4 โ€” better17.0
Further details โ€” not scored
Size51 MB5 MB
Age rating17+4+
DeveloperHEALTH PHYSICS SOCIETY INCTYH DANIEL MC LEAN

In-app purchases

None

HPS 2025

No in-app purchases

None

ReactorN

No in-app purchases

Questions

Is HPS 2025 free?
HPS 2025 is free to download, with no in-app purchases.
Is ReactorN free?
ReactorN is free to download, with no in-app purchases.
Do HPS 2025 or ReactorN have ads?
Neither HPS 2025 nor ReactorN shows ads.

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