The basics
What is this?
An AI drill-sergeant fitness coach. You log what you eat, lift, and sleep by talking to him — Sarge tracks it, reacts to it, and holds you accountable. No spreadsheets, no judgment-free coddling. Show up and he works with you; ghost him and you'll hear about it.
Who is this for?
People who already know what to do — eat better, train, sleep — and need someone on them until they actually do it. If you want a coach in your corner day and night, without your data leaving your device, this is your outfit. If you want an app that says "great job!" no matter what you did, the app store is full of them.
How do I track things?
Talk to him like a person. "Eggs and oats, ran 3 miles, slept 7 hours" — Sarge turns it into structured logs and shows you a card to confirm before anything's saved. Or tap a saved favorite for one-tap logging. No wearables to sync, no forms.
What's Tracking, and why do I start there?
You start in Tracking: log everything, Sarge reacts, and you learn your patterns — no fixed goal. Respect here is earned by honest reporting and training to your stated commitment, not calorie compliance (though you'll still hear his opinion on what you ate). It's where everyone starts, because for many it's all they need to get results. Stay as long as you like.
What's a Mission, and how do I start one?
When you want to chase a specific goal, take on a Mission from the Mission tab — and there Sarge holds you to it (the easygoing Tracking version of him goes away). Three to choose:
- Weight Loss — drop fat, hold muscle; he watches calories and the scale.
- Build Strength — lift more than last time; he watches your lifts and protein.
- Boot Camp — total lifestyle reform; everything, every day.
What does Boot Camp actually demand?
The highest bar in the app — expectations are at their peak, and respect is earned by meeting the standard every single day:
- Calories within your maintenance range
- Your weekly workout commitment, hit
- 7+ hours of sleep, every night
- 64+ oz of water, every day
- A weigh-in once a week
Full accountability, every day — miss any of it and you'll hear about it. This is the mode that treats you like a soldier.
What's the "respect" thing?
Sarge's attitude isn't random — it's a scoring engine reacting to your real data. Respect is earned by doing the work (eat / sleep / train), not by asking for it — and it's hard-earned and quickly lost: stack good days together and he warms up; slack, skip, or go quiet and it slides back fast. You start at the bottom and climb, and you can't fake it or buy it. What weighs heaviest depends on the mission you're running.
Does he write my workouts?
Yes — tap Train and he builds a session from your equipment, style, schedule, and any injuries you've logged. Tell him you've got a bad shoulder and he programs around it.
Do I need to tap the Train button, or can I do my own workouts?
The Train button is completely optional. Run your own routine and Sarge will credit and coach it all the same.
Same for the Eat button?
Yes. Hit it for meal ideas only when you want Sarge's input.
What does he actually track?
Meals, workouts, sleep, weigh-ins, measurements, steps, water, supplements, health events — plus a private notebook of what makes you tick.
Can I train with friends?
Yes — Squads. Invite-only group chats with people you actually know: create a squad, send the invite link, talk trash, and summon Sarge into the thread with @sarge. Everything in a squad is end-to-end encrypted — sealed on your device with a key only squad members hold, so we can't read a word of it. There's no public directory and no user search; the only way in is a link from someone already inside. Default-private: nothing from your logs enters a squad unless you put it there, and when Sarge posts in the thread he sees only that conversation — never anyone's private file.
Your data
Where does my data live?
On your device. Your meals, workouts, weigh-ins, Sarge's notebook — all in your phone's local storage, not on our servers.
Can you read my data or my chats?
No. Your records never leave your device. Your chats pass through our server only to reach the AI, which runs inside attested confidential-compute enclaves — the operator can't see in, nothing is retained, nothing trains a model. We keep no copy.
What's the 12-word backup?
Optional. If you want a backup, Sarge keeps an encrypted copy of your logs sealed with a 12-word recovery phrase — the same BIP-39 standard as a Bitcoin wallet. We store the encrypted bytes and can't read, link, or decrypt them. Hold the words, you hold the only key. Lose them, and not even we can recover it. Don't want to babysit words? You can lock the backup with Face ID instead — a passkey on your device stands in for the phrase, and it never touches our servers either.
What's the difference between the 12-word backup and the file download?
Nothing but the container — they're the same key in two formats. During backup setup you choose: write down the 12 words, or download a small recovery file that holds those same words. Either one restores everything. Treat the file like the secret it is — anyone holding it can restore your data. (Different thing entirely: Settings → Export Data, which gives you a readable copy of your logs — that's an export, not a recovery key.)
Do I need an account?
No. No email, no password, no login. Nothing to breach, sell, or subpoena.
Can I use it on more than one device?
It's built for one device at a time — your data lives on the device you use, so it doesn't automatically sync across phones or computers. To move to a new device, restore from your 12-word backup. (Automatic multi-device sync isn't here yet.)
What if I clear my browser or lose my phone?
If you set up the 12-word backup, restore it on the new device with those words and you're back. If you didn't, the data lived only on that device — so set the backup up early. Sarge nudges you.
Practical
Do I have to install an app?
There's no app store and nothing to download — Sarge installs to your home screen straight from the browser, and on mobile you'll be walked through it. Install it: phones treat a plain browser tab's storage as disposable, while an installed app's data is protected. Your logs live on your device — install so your operating system treats them that way.
Does it work offline?
Your logs and history live on-device, so the app and your data work offline. Talking to Sarge (the AI part) needs a connection.
Is this medical or nutritional advice?
No. Sarge is a fitness coach, not a doctor or dietitian. Nothing here is medical advice — see a professional for medical, dietary, or health decisions.
Still got questions?
The fine print lives at Privacy and Terms. Anything else: [email protected].