Comparison

TRN App vs Dosis!

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

Head to head
About

TRN App

Features
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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.

About

Dosis!

Features
Read full description

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

TRN App3 screens
Dosis!4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

TRN App ships an update every 3 weeks, Dosis! monthly. The most recent releases landed on September 20, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 4 level
TRN App versus Dosis!: the parameters behind the verdict, then further details
ParameterTRN AppDosis!
PriceFreeFree
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size45 MB8 MB
Age rating17+4+
DeveloperTraining Response Network, Inc.Dirk Schulze Röntgendiagnostik GmbH

In-app purchases

None

TRN App

No in-app purchases

None

Dosis!

No in-app purchases

Questions

Is TRN App free?
TRN App is free to download, with no in-app purchases.
Is Dosis! free?
Dosis! is free to download, with no in-app purchases.
Do TRN App or Dosis! have ads?
Neither TRN App nor Dosis! shows ads.
Which is updated more often, TRN App or Dosis!?
TRN App ships an update every 3 weeks, and Dosis! monthly. Most recently, TRN App was updated on September 20, 2026 and Dosis! on September 30, 2026.

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