For dispatch, law enforcement, fire & EMS
One app that becomes your app.
Public Safety Strong is a private, self-supportive tool for the people who answer the call. Install it once, tell it what you do, and the whole app — check-ins, content, wording — is written for that job. Four professions, one download.
First month free. No ads, no trackers, and it works with the phone offline.
Dispatcher Strong · LEO Strong · Fire Strong · EMS Strong
One app, four professions
Pick your profession. Once.
The first time you open Public Safety Strong it asks what you do. From then on it is that app — named for your job, with content written for it. You can change it later in Settings, and nothing is ever deleted when you do.
Available now
Dispatcher Strong
For the public safety telecommunicator — whether your title is dispatcher, call taker, communications officer, or emergency communications specialist. Built around the console you cannot leave: seated movement, the hours on either side of a shift, and Fact • Myth • Dispatcher — 25 cards about what this work really demands.
Tough Call check-ins · shift & overtime logging · appointments.
Available now
LEO Strong
For law enforcement professionals. The same private core, re-voiced for patrol and the drive home, with Fact Myth LEO — including the superstitions the job has carried for generations.
Tough Call check-ins · 31 exercises including standing movement
Available now
Fire Strong
For firefighters. Written for station life and the bay doors — interrupted sleep, gear weight, meals the tones had other plans for — with Fact Myth Fire.
Tough Call check-ins · shift logging · 31 exercises
Available now
EMS Strong
For EMTs and paramedics. Written for life on the unit — lifting, awkward positions, the chart that was going to get finished before the next call — with Fact Myth EMS.
Tough Call check-ins · shift logging · 31 exercises
What "becomes your app" actually means
| Its own name | Inside the app, on reminders, and on the lock screen, it calls itself by your profession. |
| Its own content | Exercises, check-in prompts and Fact Myth cards are written for the work you actually do. |
| Its own vocabulary | Shift types and work contexts match your job — no "console" if you are on an engine. |
| Its own journal | Each profession keeps entries entirely separate. Nothing is shared between them. |
| Nothing is lost | Switching never deletes anything. Change back and your entries are exactly as you left them. |
Three kinds of reset
Because a twelve-hour shift does not wear on you in only one way.
Physical wellness
Supports the body
Seated movement and stretches designed for a console you cannot leave — plus sleep, fuel and body check-ins for the hours around the shift.
Mindful reset
Supports emotional and mental settling
Guided breathing patterns, grounding exercises, and a journal that is yours alone — write it out or draw it out.
Cognitive reset
Supports attention and processing load
Short, optional brain breaks for when your head is full: trivia, mazes, word search, word scramble, logic & patterns, choice breaks, and the Fact Myth deck for your profession.
At the center is First Responder Support — the part that connects and supports the whole person, not just one lane.
What's inside
Built around a shift, not around a streak.
Every tool is optional and every one of them works without a signal. Open what helps today and ignore the rest — nothing nags you, and nothing keeps a record of what you skipped.
Pick a pattern and follow the pacing. Box breathing and others.
Short exercises to come back to the room after a hard call.
Seven of them: trivia, mazes, word search, word scramble, logic & patterns, choice breaks, and Fact Myth — 25 cards, written for your profession, that separate what's true about this job from what isn't.
Write it out, or draw it out with pencil, eraser, eight colors and undo.
Track your rotation and set reminders that repeat how you actually work. Notes never appear on the lock screen.
A nine-part personal and family readiness progression you can resume anytime, and print when you're done.
Dark-first and low glare, with Parchment for daytime and Midnight for low-light shifts. No emergency hues anywhere in the interface.
Privacy by construction
It can't leak what it never sends.
First responders are asked to trust software with the worst parts of their week. We decided the honest way to earn that was to build an app that is incapable of sharing anything — not one that merely promises not to.
The version you download from this site ships without the internet permission.
Not unused — absent. The operating
system itself will refuse a network connection if the app ever tries to open
one. You can confirm it yourself before installing:
aapt dump permissions lists four
permissions, and that is not one of them.
A Play Store version is coming, and it will differ in exactly one respect: Google's billing library requires network access, so that build carries the internet permission. Your entries still never leave the phone either way. The difference, in full →
- No account and no sign-up. There is nothing to log into, so there is no password to lose and no profile to breach.
- Encrypted on the device. Your entries are sealed with a key held in the phone's hardware keystore — a key that cannot be exported off the device, even by us.
- No analytics, ads or trackers. No third-party SDKs, no crash pings, no "anonymous usage data".
- Nothing is scored or interpreted. No streaks, no adherence, no "missed" flags, no severity scales. The app records what you chose and stops there — there is no field in it for a judgment.
- Your notes stay off the lock screen. A reminder can show up without showing anyone standing near your phone what it was about.
- Delete means deleted. One action erases everything, including any reminders already queued with the operating system.
Get Public Safety Strong
Android 8.0 or later. Your first month is free — no card to enter to start.
Your free month starts when you open it — nothing to enter. When the month is up, the app shows an install code; subscribe here with that code and paste the licence key it gives you back. One step, once.
Version 1.2.2-fmd2026.10 · 3.1 MB · direct download, no store account needed
Verify what you downloaded before installing:
484d7ef3cab9bcbb90be87ddc4fb644944960d25f7958a36e77e209a69c10b65
SHA-256 checksum file →
Installed Dispatcher Strong before 29 September?
For about a week this site offered a separate Dispatcher Strong download. Public Safety Strong replaces it — Dispatcher Strong is now one of the four professions inside it, not an app of its own.
Android cannot turn the old install into the new one, because the two have different package names. So install Public Safety Strong and choose Dispatcher when it asks. You will have both on your phone until you remove the old one.
Entries you made in the old app do not move across. There is no import, so there is no way for us to carry them over and no way for you to. If they matter, open the old app, use Export my data to save a copy, and keep the old app installed until you are sure you no longer need it. Nothing is deleted unless you delete it.
Your subscription covers Public Safety Strong in whichever profession you pick, and neither app ever sends your entries anywhere.
Your first month
Free
Everything unlocked. No card, no commitment, and nothing to cancel if you decide it isn't for you.
Monthly
$3.99 /month
Cancel whenever you like. About the price of one drive-through coffee a month.
Yearly
$39.99 /year
Two months cheaper than paying monthly, if you already know this is for you.
No ads and no data selling at any price — that is not where the money comes from. Prices in US dollars.
Two versions, and the honest difference
We could have shipped one app and glossed over this. Instead, here is the whole of it:
| From this site | From Google Play | |
|---|---|---|
| Internet permission | None at all | Required by Play billing |
| Your entries leave the phone | Never | Never |
| How you subscribe | On this website, then paste a licence key once | Google Play, like any other app |
| Updates | You download them from here | Automatic |
| Analytics or ads | None | None |
If the permission matters to you, take the version on this page. If you would rather Google handled the billing and the updating, wait for the store.
Installing a direct download
Because this comes from us rather than from a store, Android will ask you once whether you trust it. That is the system working correctly, not a warning about the app.
- Tap Download for Android above and let the file finish.
- Open it from your notifications or your Downloads folder.
- If Android says installing from this source is not allowed, tap Settings on that prompt and turn on permission for your browser, then go back.
- Tap Install, then Open.
Android may also offer to scan the file, which is fine. You can turn the install permission back off afterwards.
Verify the file before you install it
Every release is signed by Chaos Innovations LLC, and Android checks that signature before installing. If you would also like to confirm the file arrived intact, its SHA-256 is published here and in a checksum file:
484d7ef3cab9bcbb90be87ddc4fb644944960d25f7958a36e77e209a69c10b65
On a computer, sha256sum public-safety-strong-1.2.2.apk should print exactly that.
A second app
Reset
The same private core, rebuilt for everyday life. Not a public-safety app and not a profession to pick — Reset is for anyone who wants the tools without the job attached.
What it is
Everyday wellness, kept private
Body, Mindful Reset and Cognitive Reset, with Support at the centre — the same three-part structure as the STRONG apps, re-voiced for ordinary life rather than a shift roster.
It adds two things the profession apps do not have: After a Hard Moment, for the hours after something lands badly, and a Daily Reflection. It also keeps optional personal health notes — blood pressure, glucose, pulse, weight — recorded for you and never interpreted.
25 Fact · Myth cards · journal · brain breaks · appointments · preparedness · reminders
Available now
Get Reset
Android 8.0 or later. Direct download, no store account needed. Your first month is free, then $3.99/month or $39.99/year. Reset is its own subscription, separate from Public Safety Strong.
Version 1.1.1-reset2026.10 · 3.1 MB · no internet permission,
so it cannot send anything anywhere.
23f29a28a3eff63b60890fb99a7fab134fe673b719c4c3f91125d543bf2406a2
Reset installs alongside Public Safety Strong without touching it. They are separate apps with separate storage, so entries made in one never appear in the other — and installing one never affects the other's subscription or its data.
About Chaos Innovations
Chaos Innovations LLC builds tools for the people who hold the line when everything else is coming apart. Public Safety Strong is our first app, and it was shaped by the job it is for — not adapted from a general wellness product and pointed at first responders afterwards.
It is owned and directed by Michelle Tringali, whose requirements drove every design decision in it, down to the rule that gold is a brand color and never a status color.
Why it was built this way
A first responder's wellness data is unusually sensitive. It can touch fitness for duty, it can be subpoenaed, and it can be read over a shoulder in a room with no privacy.
So the app's boundaries are not settings you have to find and switch on — they are built into its structure. It holds no field for a diagnosis, keeps no score, and has no way to reach the network. That is the whole design.