Slimsy vs Vialry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slimsy
This app helps users track their GLP-1 medication, including dose logging, injection site rotation, and reminders. It also monitors food intake with AI estimates, tracks symptoms, and charts progress like weight and BMI. Integrates with Apple Health for a comprehensive health overview.
- Log GLP-1 doses and injection sites
- AI-powered meal calorie and nutrient estimates
- Track food, symptoms, and weight
- Daily calorie and water targets
- Progress charts and shareable cards
- Apple Health integration
- Smart reminders and home-screen widget
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Slimsy is a calm, private companion for your GLP-1 routine: log each dose, see what's coming next, and keep food, symptoms and weight in one place. Built for weekly injections and daily pills, with a friendly raccoon cheering you on. FEATURES (WITH SLIMSY PRO) DOSES & INJECTION SITES • Log each dose with date, time and injection site • Get a site-rotation suggestion on a body map (female or male silhouette) • Countdown to your next dose • A dose timeline that shows where you are in your dosing week. It's an illustration, not a blood test. FOOD & DAILY TARGETS • Snap a meal photo for AI estimates of calories, protein, fiber, carbs and fat • Daily calorie, protein, fiber and water targets calculated with the Mifflin–St Jeor equation, your activity level and the pace you choose • Quick water logging SIDE EFFECTS & DOCTOR VISITS • Log symptoms and see trends over time • See which days after a dose symptoms are usually strongest • Download a PDF symptom report to bring to your doctor PROGRESS • Weight chart and BMI • Milestones and shareable progress cards • Export your journal as a CSV anytime APPLE HEALTH • Reads active energy, steps and weight. Activity is added to your daily calorie target, and weigh-ins are imported. • Saves meals, water and weight to Apple Health • You choose what to share, and you can change it anytime in Settings REMINDERS & WIDGET • Smart local reminders for doses, check-ins, meals, water, protein tips and weigh-ins. Reminders skip what you've already logged. • Home-screen widget with your dose timeline and next dose WORKS WITH Wegovy®, Ozempic®, Mounjaro®, Zepbound®, Saxenda®, Rybelsus®, and compounded semaglutide or tirzepatide as prescribed by your provider. Slimsy is not affiliated with or endorsed by the makers of these medications. All trademarks belong to their respective owners. PRIVACY Your journal is stored on your device. No ads and no cross-app tracking. When you scan a meal, the photo is sent securely for AI analysis to create the estimate. SLIMSY PRO All features above are included with a Slimsy Pro subscription. Slimsy Pro is available as a monthly or yearly auto-renewing subscription. Both plans include a 7-day free trial for eligible new subscribers. You can also redeem an offer code. • Payment is charged to your Apple Account when you confirm your purchase (or when the free trial ends). • Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. • Manage or cancel anytime in your Apple Account settings after purchase. • Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Use: https://slimsy.lovable.app/terms Privacy Policy: https://slimsy.lovable.app/privacy MEDICAL DISCLAIMER Slimsy does not calculate, recommend or adjust medication doses. You log only the dose your healthcare provider prescribed. Slimsy is for tracking and informational purposes only. It is not a medical device and does not provide medical advice, diagnosis or treatment. The dose timeline, nutrition values and calorie targets are estimates. Never change your dose or treatment based on the app; always follow your healthcare provider's guidance and check with them before making medical decisions.
Vialry
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Vialry is a private tracker for the injections you already take: TRT, HRT, GLP-1 pens and vials, and anything else your clinician prescribed. Add a vial in about a minute, confirm each entry, and keep a plain count of what is left. YOUR VIALS IN ONE LEDGER - Name, amount and unit, plus lot, opened date and expiry when you have them - A plain count of what is left on each vial, pen or box, like a refill count - A low-supply marker you choose, shown on the bar - Start a replacement vial without losing the old one's history EVERY ENTRY CONFIRMED Pick the vial, type what you took, tap the spot on the body map. Nothing saves until you tap Confirm & Save. Apple Watch, widget and Shortcut actions open the same confirmation. REMINDERS FROM YOUR SAVED PLAN Save the schedule your clinician gave you and Vialry reminds you at those times. Late or skipped? Record what actually happened. APPOINTMENT SUMMARY Choose the date of your last visit, jot down your questions, and share one PDF: what you logged since then on page one, the full record after it. The first one does not need Pro. VIALRY PRO Charts of your last 28 days (how often you logged, which sites, what you noted), an alert at your low-supply marker, your choice of expiry lead time, repeat appointment summaries and history filters. Pay once with Vialry Pro Lifetime, or choose the yearly plan, which also adds encrypted backup and sync between your devices. PRIVATE BY DESIGN No account needed for the journal. No ads and no third-party tracking. The journal stays on your device unless you turn on encrypted backup (yearly plan, with Sign in with Apple), and you can export JSON or CSV at any time. Optional product analytics starts off and never carries a journal value. Vialry only keeps the values you type. It gives no medical advice and is not a medical device. For adults 18+. Vialry Pro Lifetime is a one-time purchase with no renewal. The yearly plan is an auto-renewing subscription: payment is charged to your Apple Account at confirmation, and it renews unless canceled at least 24 hours before the current period ends. Manage or cancel it in your Apple Account settings. Terms of Use: https://vialry.keenshift.ai/terms Privacy Policy: https://vialry.keenshift.ai/privacy
Screenshots
Verdict
The clearest difference is update cadence: Vialry at fortnightly against Slimsy's every 4 months. Vialry also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Slimsy sells 2 in-app purchases, starting at $9.99 per month and Vialry sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Slimsy ships an update every 4 months, Vialry fortnightly. Both last shipped on October 24, 2026.
| Parameter | Slimsy | Vialry |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 17 MB |
| Age rating | 4+ | 17+ |
| Developer | Path Coaching | Mitaanshu Agarwal |
In-app purchases
Slimsy
- Slimsy Monthly7 Days trial$9.991 Month
- Monthly$39.991 Year
Vialry
- Vialry Pro Monthly$7.991 Month
- Vialry Pro Yearly7 Days trial$39.991 Year









