TRN App vs Dosis!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TRN App
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Training Response Network Inc. introduces a significant advance in mobile app capabilities for law enforcement, higher-education and K-12 with the release of its new iPhone app. The new mobile and tablet app is a giant leap ahead for intelligent and ease-of-use software features. The TRN app provides advanced software applications seamlessly integrate with a desktop/laptop administrative section and is a substantial upgrade of TRN’s cloud-based training and technology platform solution. The importance for any training of law enforcement or any training in general is repetition. This new app provides for easy remedial training and the consistent output of repetitious short Roll Call Training selection of courses, polices or quizzes. In addition, TRN introduces a unique and one-of-a-kind new feature where any Sheriff’s/Chief (or Leadership) can easily create a video at their desktop camera, mobile phone or studio video to quickly upload the video message to push out to all staff instantly for a direct and seamless outreach of a key message to staff thereby bypassing slower conventional methods. TRN’s new app for Law Enforcement and other market segments provides a giant leap ahead of all competitors and offers important, highly useful features, convenience and is easy-of-use. TRN’s new mobile/tablet app provides Law Enforcement, Higher-Education and other market segments convenience and ease-of-use methods to access and provide staff unique new software applications such as Roll Call Training, Agency Polices, Agency Training, and quizzes for each of these 3 functions, a unique and first, Message from Leadership feature as well as Agency News all of which effectively increase the knowledge retention of staff on training, high-liability policies and need-to-know issues better than any offering or method available today. TRN is the innovator for on computer-based training and software applications for both law enforcement and higher-education. Learn more about TRN at TRNPC.com. Fifteen years of demonstrated solutions at the best pricing from any company.
Dosis!
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Dosis! makes everyday ionising radiation tangible – factual, multilingual and clutter-free. • Ambient dose: Shows the current dose rate of the nearest official monitoring station (Germany: BfS ODL-Info; Switzerland: NADAM/NAZ). Your location is used on-device only and never transmitted. • Flight dose: Estimates the effective dose of a flight from origin, destination, cruise altitude and travel month (solar cycle) – with intuitive comparisons (panoramic X-ray, days of natural radiation, hours on Guarapari beach, minutes in the Gastein radon gallery). • Food: Converts the radiation dose of 40+ foods into microsieverts and "banana equivalents" (potassium-40 and others). • Radiation hotspots: Places with extraordinary radiation – natural hotspots (Guarapari, Ramsar), nuclear sites (Chernobyl, Fukushima, Mayak), space (ISS, Moon, Mars) and historical uses (shoe-fitting fluoroscope, radium dials and more) – with dose values, maps, photos and sources. • Learn: short, accessible articles – What is background radiation? Doses in medicine (with a table from dental X-ray to CT), the story of the banana equivalent dose, why food is radioactive, mineral water and infants. • Works worldwide: outside Germany and Switzerland the app shows a clearly labelled physical estimate (per UNSCEAR) instead of a measurement. • Topographic maps with country borders and capitals – for your location, every flight route and every radiation hotspot. Note: Dosis! is for information and education. It is not an official dose assessment or alert level. Languages: German, English, French, Italian, Spanish, Chinese.
Screenshots
Verdict
The clearest difference is device support: TRN App at 3 against Dosis!'s 1. TRN App also leads on iOS requirement (13.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
TRN App ships an update every 3 weeks, Dosis! monthly. The most recent releases landed on September 20, 2026 and September 30, 2026 respectively.
| Parameter | TRN App | Dosis! |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 45 MB | 8 MB |
| Age rating | 17+ | 4+ |
| Developer | Training Response Network, Inc. | Dirk Schulze Röntgendiagnostik GmbH |
In-app purchases
TRN App
No in-app purchases
Dosis!
No in-app purchases








