PressureKept
Blood pressure & vitals
Log blood pressure, pulse and vitals over time, and see the trends your doctor actually asks about — kept privately on your phone.
Local-first · privacy by design
Useful apps that keep what matters safe — on your own device.
Coffer is a small studio building calm, everyday apps that work like a strongbox for your life's records — health, home, car, money, pets. No account to create, no ads to dodge, no cloud that can leak or vanish. Everything stays on your phone, full stop.
Data stays on-device
No tracking, no ads
No account required
Honest, one-time pricing
Why Coffer
Privacy isn't a feature we bolt on. It's the whole design.
Most apps treat your personal life as inventory to be collected, synced and sold. We build the opposite: software that does its job on your device and asks nothing of you it doesn't need.
Your data, on your device
Everything you log lives in local storage on your phone. There's no server holding a copy, so there's nothing to breach, subpoena or lose in an outage.
No tracking, no ads
No analytics SDKs profiling your behaviour, no advertising networks, no third-party tags. The app you install is the whole app — nothing watching over your shoulder.
No account required
Open the app and start. No sign-up wall, no email, no password to forget. Your identity is your business — we never ask for it to let you get things done.
Honest pricing
A genuinely useful free core, then a fair one-time unlock or light subscription for the extras. No dark patterns, no surprise renewals, no selling you back your own data.
The Coffer family
Eleven apps. One promise: what you record stays with you.
Each app is focused on doing one everyday thing well — and every one follows the same local-first rules. Pick the ones that fit your life; they'll never trade on your data.
CycleKept
Period & cycle tracker
Track your period, symptoms and predictions with the discretion this data deserves. Nothing about your cycle ever leaves your device.
BabyKept
Feed · sleep · diaper log
Quick, one-tap logging of feeds, sleep and diapers through the newborn fog — with the history you need and none of the sign-ups.
SpendKept
Budget & spending
A simple budget and spending tracker that never links to your bank. You enter it, you own it — your money stays your own business.
DoseSafe
Medication reminders
Reliable medication reminders and adherence tracking, so nothing slips — with your health schedule stored only on your device.
PlantKept
Plant care & watering
Watering and care reminders tuned to each plant, so your greenery thrives. Friendly nudges, zero accounts, no data harvested.
PetVault
Pet health records
Keep vaccinations, vet visits and weight for every pet in one tidy place — a health record that stays safely in your pocket.
Warranty Vault
Warranties & receipts
Store warranties and receipts, and get a heads-up before cover expires — so you claim what's yours without digging through drawers.
Upkeep
Home maintenance
Track filters, servicing and seasonal chores so your home stays cared for. A quiet checklist that lives entirely on your phone.
CarKept
Car service log
Log services, mileage and repairs to keep your car healthy and its resale value honest — a full history you actually control.
SubAudit
Subscription auditor
Find every recurring charge, spot the ones you forgot, and see the yearly total. No bank connection — you stay firmly in charge.
How we're different
Trust you can verify, not just take our word for.
Local-first, not cloud-first
Your records are written to your device's own storage. Sync, if we ever add it, is opt-in and end-to-end — never a default that quietly copies your life to our servers.
We can't see your data — by design
Because nothing is sent to us, there is no dashboard where we read your entries. The best way to protect data is to never hold it in the first place.
You can leave with everything
Export your data whenever you like, in a format you can keep. No lock-in, no hostage-taking — the exit is as open as the entrance.
Minimal permissions, plain-English privacy
We ask only for what a feature truly needs, and our store listings say exactly what each app stores. Secure defaults, no fine print traps.
Get started
Find the Coffer app that fits your life.
Every app is free to try, private by default, and yours to keep. Browse the family and pick the ones that earn a place on your home screen.