Curve is a kind, careful journal for the people taking care of a diabetic pet — and for the animals they love. Built by someone who got tired of watching a Google Sheet crash mid-curve.
The whole shape of a chronic condition, in one timeline.
Curve started as a fix for a real frustration: every diabetes app for pets either crashed or didn't quite trust the people using it. So we made a softer one. It began with feline care — the logging, curves, trends, and reports work the same for a dog or any other pet on daily insulin.
Daily
Blood glucose & insulin
Pre-shot and random BG in mg/dL or mmol/L, with the full dose history and the reason behind every change.
Sessions
12-hour glucose curves
Seven readings, two hours apart, with notifications between. Auto nadir, peak, duration.
Compare
Curve to curve
Overlay two sessions in one chart and read nadir, peak, mean, and duration side by side. Pro.
Sharing
Vet-ready PDF
One page, any range, with chart, in-range %, adherence, and full dose-change log.
Trends
The numbers vets ask for
Pre-shot and nadir averages, adherence, and weight — each against the previous period, over 3 days to all time.
Beyond
CKD · OA · pancreatitis
IRIS staging from SDMA / creatinine, OA injection tracking, pancreatitis meds — one pet, many conditions.
Database
Foods that matter
Carbs and phosphorus for common diabetic and renal cat foods. Scan a barcode for anything outside it.
Reminders
The care plan, on time
Morning and evening insulin reminders, plus recurring care-plan items you set once and stop re-remembering.
Yours
Private by design
Local SwiftData with automatic sync through your private iCloud account when available. No analytics, trackers, or sign-up.
Curve is not a medical device. It doesn't tell you what to inject, when to inject, or whether to inject. It doesn't diagnose. It doesn't fire hypoglycemia alarms. Your pet is your vet's patient — Curve is the notebook.
Inside Curve
Five screens, one quiet shape.
Every screen carries the same wave — your data, drawn the same way, from the morning log to the vet handoff. Drag to browse.
Today. Three taps and the day is logged. Pre-shot BG, insulin, meal — done.Curve session. Seven readings, two hours apart. Smart reminders so you don't miss one.Trends. Pre-shot average, nadir, adherence, weight — the numbers your vet asks about.Vet PDF. One clean page. Any range. Every dose change with the reason you gave it.Compare. Overlay two sessions and see what actually changed — nadir, peak, mean, duration.
Signature
A wave that runs through everything.
The app is called Curve. The thing you're looking at all day is a curve. So we drew one — and put it in every moment that matters. Same Bezier, eight different homes.
Today greeting
A sparkline drawn from your pet's last 24 hours of readings. Not decoration — your data, every morning.
Chart marker
92NADIR
Pre-shot, nadir, peak — serif numbers right on the curve, with a tiny wave underneath each one.
Loading
Generic iOS spinner, retired. A dashed wave flows wherever the app is waiting on something.
Section divider
Card groups don't get a flat 1px line. They get the same wave, in miniature.
The moment
You did the curve. That's worth seeing.
A 12-hour at-home glucose curve is real work. Seven readings, two hours apart, around your job and the laundry. When you finish, Curve doesn't drop you into a metrics screen — it gives you a beat. Your pet's name in serif. The actual shape of the day, drawn as a single brand stroke. Four numbers. Then the summary.
No interpretation. No "well-regulated." No "consider X units." Just the curve you made, the way you made it.
✓ Curve complete
Bert's curve.
7 readings · 12h 4m
142
Pre-shot
92
Nadir
152
Peak
124
Mean
View summary →
Pricing
Free for the parts that matter.
Logging blood glucose, insulin, and basic events is free forever — you shouldn't have to pay to care for someone you love. Pro is the polish around that core.
Free
One pet profile
The latest 14 days of history and trends
Your most recent curve
Food logging with the bundled feline food catalog
One complimentary full-range vet report
Curve Pro
Unlimited vet PDFs, any date range
Curve history and side-by-side comparison
Unlimited pet profiles, multi-condition tracking
Full trends and history beyond 14 days
Family Sharing
Yearly
$19.99
per year · Family Sharing
14-day free trial
Lifetime
$39.99
once · Family Sharing
No renewals. Pays for itself after two years.
Subscriptions auto-renew unless cancelled at least 24 hours before the period ends.
Manage anytime in Settings → Apple ID → Subscriptions.
See Terms and Privacy.
Ready when you are.
Download Curve, or reach out if you have a question first — a real person reads every message.
