Weightly: Trend & BMI Diary
Weight Loss Trend & BMI Log
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
New in 2.0: rebuilt natively for iPhone. See your real trend, log from widgets, Siri or Apple Watch — and enjoy a free week of PRO.
See the trend, not the noise.
Your weight jumps around every day — water, salt, sleep. Weightly smooths those swings into one honest trend line, so you always know where you're really heading. No account, no ads, and your data stays on your devices.
SMART TREND
• Exponentially weighted moving average that handles missed days
• Weekly rate and an honest date range for your goal — not a promise
• Plateau detection that tells you when things are simply steady
APPLE HEALTH & SMART SCALES
• Two-way sync with Apple Health, without duplicates
• Works with any scale whose app writes to Health (Withings, Renpho, Eufy, Garmin and more)
• Body composition, steps and sleep as context
LOG IN SECONDS
• Interactive Home Screen widget: adjust and save without opening the app
• Lock Screen widgets, Control Center control and Apple Watch with Digital Crown
• Siri and Shortcuts: "Log my weight in Weightly" — also with the Action Button
MORE THAN THE SCALE
• Goals to lose, gain or maintain within a range
• Waist, hips, chest and more; private progress photos with comparison
• GLP-1 & medication log with injection sites, reminders and a PDF for your clinician
• Hide numbers: show only the direction, or hide values entirely
• Import from Libra, Happy Scale, Renpho or Withings; export CSV/JSON anytime
• Face ID lock, iCloud sync, kg / lb / st, dark mode, 6 languages
WEIGHTLY PRO (OPTIONAL)
Everything above is free. PRO adds Insights (weekly & monthly recaps, weekday pattern, streaks), goal milestones, a progress report PDF, photo timelapse videos, progress widgets and color themes.
Your first week of PRO is a gift: it starts automatically, needs no payment and simply ends.
Afterwards PRO is available as a weekly, monthly, 3-month or yearly auto-renewing subscription (with a welcome price on your first period) or a one-time lifetime purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel them in your Apple Account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://weightly.ardasnturk.com/privacy
Weightly is a general wellness app. It does not provide medical advice, diagnosis or treatment.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Weightly 2.0 — completely rebuilt for iPhone.
• Native SwiftUI app with the iOS 26 design
• Smarter trend with weekly rate, goal date range and plateau detection
• Two-way Apple Health sync without duplicates
• Interactive widgets, Lock Screen, Control Center, Apple Watch and Siri
• Measurements, progress photos and a GLP-1 & medication log
• No account needed — your data stays on your devices
• New: Weightly PRO with Insights, milestones, PDF report, timelapse and themes — your first week is free
Optimized for iPhone Duo: adaptive layouts for the inner and outer displays, with your work preserved as you fold and unfold.
The developer, Arda SENTURK, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Arda SENTURK
- Size
- 9.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
English and 5 more
- English, French, German, Italian, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Weightly PRO Lifetime $49.99
- Weightly PRO Weekly $1.99
- Weightly PRO Monthly $3.99
- Weightly PRO 3 Months $8.99
- Weightly PRO Yearly $24.99
- Copyright
- © 2026 Arda Şentürk
