Comparison

Traitus vs OnScene

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

Head to head
About

Traitus

Features
Read full description

Turn notes into practice Traitus helps you study from your own notes β€” not random flashcards. Write a note. Practice it. Ask when you’re stuck. Notes - Create a note from a topic, write your own, or add a PDF, photo, link, or recording. Your notes sit on the home screen like sticky notes. Practice - Open a note and practice with flashcards, quizzes and more β€” built from that note. Help when you’re stuck - Chat about your note, or talk it through out loud. Save useful answers back into the note. Review - When something needs another look, Traitus shows it on home so you can revise quickly. Write it once. Practice it. Remember it. Download Traitus. EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OnScene

Features
Read full description

OnScene is your scenario-based study coach for the NREMT EMT cognitive certification exam β€” designed to fit between calls, during shift changes, and in the moments when a textbook is too much. Master the exam blueprint: β€’ Scene Size-Up & Safety (15-19%) β€’ Primary Assessment (39-43%) β€’ Secondary Assessment (5-9%) β€’ Patient Treatment & Transport (20-24%) β€’ EMS Operations (10-14%) Inside OnScene: β€’ 450 scenario-based questions across 11 study topics, weighted to the NREMT 5-domain blueprint β€’ 140 spaced-repetition flashcards covering drug indications, dosages, age-banded vitals, and BLS algorithms β€’ Full 60-question practice exam that mirrors the real Pearson VUE adaptive test β€’ Detailed explanations on every question, grounded in the National EMS Education Standards 2021, Scope of Practice 2019, and 2025 AHA Guidelines for CPR & ECC β€’ Streaks, XP, and 17 badges to keep your study habit on duty until test day Free vs. Full Access: Try the EMS Systems unit, 20 flashcards, and one practice topic for free. One-time unlock ($14.99) opens every topic, all 140 flashcards, and the full practice exam β€” no subscriptions, no ads. Built for: EMT-Basic students, EMR-to-EMT bridges, IFT crews retaking after lapsed certification, and fire academies running NREMT prep blocks. Official sources β€’ NREMT EMT Examination Specifications: https://www.nremt.org/admin/getmedia/4cb170ab-35fa-4ec0-a76c-634847005bc4/EMT-Test-Plan_Public β€’ National EMS Education Standards 2021 (NHTSA, hosted by NAEMSE): https://cdn.ymaws.com/naemse.org/resource/resmgr/files/ems_education_standards_2021.pdf β€’ National EMS Scope of Practice Model 2019 incl. Change Notices 1.0 & 2.0 (NHTSA, hosted by NREMT): https://www.nremt.org/getmedia/d82edd97-1425-423f-954c-fdd63cf1daa3/National_EMS_Scope_of_Practice_Model_2019_Change_Notices_1_and-_2_August_2021 β€’ 2025 AHA Guidelines for CPR & ECC (Highlights): https://cpr.heart.org/-/media/CPR-Files/2025-documents-for-cpr-heart-edits-posting/Resuscitation-Science/252500_Hghlghts_2025ECCGuidelines.pdf Disclaimer OnScene is an independent study aid based on the NREMT EMT Examination Specifications (2023 Practice Analysis), the National EMS Education Standards 2021, the National EMS Scope of Practice Model 2019, and the 2025 AHA Guidelines for CPR and ECC. It is not affiliated with, endorsed by, or sponsored by the NREMT, NHTSA, the American Heart Association, or any other organization.

Screenshots

Traitus4 screens
OnScene4 screens

Verdict

The call

The clearest difference is ads: OnScene at none against Traitus's shown. Traitus's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Traitus sells 2 in-app purchases, starting at $7.99 per month and OnScene sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Traitus ships an update every 2 weeks, OnScene every 2 months. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

Scorecard2 real differences Β· 4 level
Traitus versus OnScene: the parameters behind the verdict, then further details
ParameterTraitusOnScene
PriceFreeFree
Update frequencyEvery 2 weeks β€” betterEvery 2 months
AdsYesNo β€” better
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details β€” not scored
Size119 MB20 MB
Age rating12+4+
DeveloperMOHAMAD HAFIZ CHE HAMIDFireside WiFi LLC

In-app purchases

2 purchases

Traitus

Subscriptions2
  • Traitus Pro – Monthly$7.991 Month
  • Traitus Pro – Yearly$59.991 Year
2 purchases

OnScene

One-time2
  • Pro β€” 20% Off$11.99
  • Full Access Unlock$14.99

Questions

Is Traitus free?
Traitus is free to download, with in-app purchases available.
Is OnScene free?
OnScene is free to download, with in-app purchases available.
Do Traitus or OnScene have ads?
Traitus shows ads; OnScene does not.
Which is updated more often, Traitus or OnScene?
Traitus ships an update every 2 weeks, and OnScene every 2 months. Most recently, Traitus was updated on October 5, 2026 and OnScene on October 7, 2026.

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