FAST vs REAC/TS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FAST
This app serves as a guide for HAZMAT professionals on how a specific decontamination agent interacts with and neutralizes various chemicals. It features a comprehensive chemical threat index, detailing efficacy on vapor releases and contaminated surfaces, with search and sort functionalities.
- Extensive chemical threat index
- FAST-ACT efficacy details
- Vapor release decontamination
- Contaminated surface decontamination
- Search by Chemical Name
- Sort by CAS Number
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The FAST-ACT Chemical Decontamination Guide was designed to provide HAZMAT professional a guide on how FAST-ACT will interact and decontaminate the chemical that they are encountering. The FAST-ACT Chemical Decontamination Guide provides: • The largest chemical threat index on an app • FAST-ACT efficacy on specific vapor release and contaminated surfaces • Sort and search by Chemical Name, Cas NO.
REAC/TS
This app provides essential information for the medical management of individuals exposed to radiation or radioactive materials. It serves as a valuable resource for healthcare professionals and emergency responders dealing with radiation-related emergencies.
- Medical management of radiation exposure
- Emergency response resources
- Information for healthcare professionals
- Guidance for public health agencies
- 24/7 contact information
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The Radiation Emergency Assistance Center/Training Site (REAC/TS) developed a free resource to provide information on the medical management of people who are injured or ill from radiation or radioactive materials. Resources for the management of a emergency involving radiation is helpful for Physicians, Nurses, Paramedics, EMT's EMS, Fire Department, Rescue Squads, Law Enforcement Officers and other public health agencies. Information for available resources are helpful for health physicists, radiation safety officers, radiological technicians, and emergency planners and nuclear and atomic workers involved in emergency response. For additional assistance, REAC/TS can be contacted 24 hours a day at 865-576-1005 (United States)
Screenshots
Verdict
The clearest difference is rating: REAC/TS at 5.0 against FAST's 4.3. REAC/TS also leads on update cadence (every 3 months vs every 7 months). FAST's advantage is iOS requirement (12.1 vs 16.0). On price, ratings volume, 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.
REAC/TS holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 4 respectively.
FAST ships an update every 7 months, REAC/TS every 3 months. Both last shipped on October 4, 2026.
| Parameter | FAST | REAC/TS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 | 4 — better |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 22 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Timilon Technology Acquisitions LLC | ORAU |
Customer experience
FAST
REAC/TS
In-app purchases
FAST
No in-app purchases
REAC/TS
No in-app purchases
