Privacy-first health tracking · iOS

Your weight loss journey, fully yours.

Slimr is a private health companion built for the GLP-1 generation. Track weight, body composition, doses and meals — without an account, without ads, without your data ever leaving your phone.

Download on the App Store See features
On-device storage iCloud private sync No accounts, ever
Built privacy-first iOS 26+ iCloud private sync Available in English & Español Made for GLP-1
Five tools, one quiet app

Everything you need. Nothing you don't.

Weight tracking

Tracking that gets out of your way.

Log a weight in two taps. Slimr does the rest — drawing trend lines, smoothing daily noise, and surfacing the patterns that actually matter to your goal.

Sync seamlessly with Apple Health, set goals in kilograms or pounds, and watch your progress in charts designed to be calm, not loud.

  • Daily logs with trend smoothing and weekly averages
  • Two-way Apple Health sync, BMI, and goal tracking
  • Plateau and momentum detection, no manual math
Slimr weight tracking screen
Body composition · with AI

Read your InBody scan like your doctor does.

Drop in a scan from any body composition device — InBody, Tanita, Withings, or a photographed printout — and Slimr generates a plain-language summary, clinical findings, and recommendations tailored to your trajectory.

Compare segmental muscle and fat across visits, watch lean mass hold while you cut, and export a medical-grade PDF for your physician in seconds.

  • AI summary, findings, and personalized recommendations
  • Segmental analysis with side-by-side comparisons over time
  • One-tap PDF export for your doctor or nutritionist
Slimr body composition summary screen
Slimr body composition detail screen
GLP-1 medication

GLP-1 tracking, finally done right.

Built specifically for Ozempic, Wegovy, Mounjaro, Zepbound, Saxenda and Rybelsus. Titration schedules are pre-loaded — Slimr knows when you should step up and when to hold.

Rotate injection sites with a body map, log side effects against your dose history, and track your supply so you never run out mid-titration.

  • Body-map injection rotation across abdomen, thigh, and arm
  • Built-in titration schedules for every major GLP-1
  • Side effect log, supply tracker, and plateau detection
Slimr GLP-1 dosage screen
Nutrition

A diet plan that actually fits you.

Tell Slimr your goal, your preferences and your intolerances. It generates a balanced weekly meal plan calibrated to your protein needs, your medication, and the calories your body is asking for.

Stay flexible with calorie tracking, swap any meal you don't love, and keep a running log of foods that don't agree with you.

  • AI-generated weekly meal calendar, recalibrates as you progress
  • Calorie and macro tracking without the fuss
  • Food intolerance log that informs future plans
Slimr diet plan screen
Hydration

Hydration that adapts to you.

Your daily water target is calculated from your weight and recalculated as you change. Log a glass with a single tap. Skip the gimmicks — no plant that dies, no streak shaming.

A quiet ring fills as you go. That's the whole interface.

  • Personalized goal based on body weight
  • One-tap logging, custom container sizes
  • Gentle reminders, never nagging
Slimr hydration screen
Privacy

Your data never leaves your phone.

We built Slimr the way we wished health apps were built. No analytics. No ad networks. No mysterious cloud. Just your phone, and — if you want — your iCloud.

On-device storage

Every weight, dose, scan and meal lives in a local database on your iPhone. We physically cannot read it, because there is no server to send it to.

iCloud private sync

Multi-device sync runs through your private iCloud database. Your data is end-to-end encrypted with your Apple account — Apple can't read it, and neither can we.

No accounts, no servers

There's nothing to sign up for. No email. No password. No "continue with" button. Slimr never had a database, so there's nothing to leak.

Pricing

Start your trial. No commitment.

One purchase covers every Pro feature. Cancel from the App Store any time.

Monthly
$7.99/month

Month-to-month flexibility. Skip whenever.

Start monthly
Includes
  • Body composition AI insights
  • AI-powered diet planning
  • GLP-1 medication tracking
Recommended Annual
$39.99/year
$3.33/month equivalent · save 58%

Our recommended plan. Includes a 7-day free trial.

Start free trial
Includes
  • Body composition AI insights
  • AI-powered diet planning
  • GLP-1 medication tracking
  • Up to 5 family profiles
  • Medical-grade PDF exports
  • Apple Watch & widgets (soon)
Lifetime
$79.99one-time

Pay once. Use forever. Never see this screen again.

Buy lifetime
Includes
  • Body composition AI insights
  • AI-powered diet planning
  • Up to 5 family profiles
  • Medical-grade PDF exports

Cancel anytime in App Store settings.

FAQ

The honest answers.

Do I need an account?
No. Slimr has no sign-up, no email, no password. Open the app and start tracking. If you want to sync between your iPhone and iPad, we use your existing iCloud account — we never see it.
Will my data ever be sold?
No, and it can't be. There is no server-side database in our infrastructure that holds your weight, scans, or doses — those records exist only on your devices. Selling data we don't have isn't a business model we can run.
Does Slimr work without internet?
Completely. Logging, charts, AI insights you've already generated, and PDF exports all work offline. The only feature that requires connectivity is generating a brand-new AI analysis or meal plan.
Can my coach actually see my data?
Only what you choose to share, and only while you allow it. Profile sharing is end-to-end encrypted with per-recipient keys, scoped by feature, and revocable from your phone in two taps.
What happens if I cancel my subscription?
You keep all your historical data forever — it's yours, on your phone. Free features keep working. Pro features become read-only until you re-subscribe or buy lifetime.
Metric or imperial?
Both, throughout. Switch units at any time and Slimr converts every record retroactively. Pounds and kilograms, fluid ounces and liters, inches and centimeters.
What languages are supported?
English and neutral Latin American Spanish at launch, with the entire app — including AI summaries — fully localized. More languages are on the roadmap.
Is there an Android version?
Not today. Slimr is iOS-only because the iCloud private database and HealthKit are the foundations of our privacy story. An Apple Watch app and home screen widgets are coming soon.

Take control of your weight loss journey today.

Free to try. 7-day trial included with annual.

Download on the App Store