# Weight Loss Tracker - Scaler > Scaler is a simple weight loss tracker app for iPhone that helps you log your weight, set a goal to lose or gain weight, follow your progress with clear charts and BMI insights, and stay motivated over time. It is free to download on the App Store, with no ads and no account required. An optional Pro upgrade unlocks advanced features, available as a monthly or yearly subscription or a one-time Lifetime purchase. Made by Plainzer Sp. z o.o. Key features: Weight tracking, Goal tracking, BMI calculator, Progress charts, Advanced analytics, Weight prediction, Weight history, Units and height, Weigh-in reminders, Daily check-in streak, Apple Health sync, Export data, iCloud sync and backup, Privacy first, Home Screen widgets, Lock Screen widgets, Dark theme. ## App - [Overview](https://getscaler.app/index.md): What Scaler is, platform, pricing and full feature list - [App Store](https://apps.apple.com/app/apple-store/id6785235677): Download Scaler for iPhone - [Changelog](https://getscaler.app/changelog.md): Release history and new features - [Artem Grabowski](https://getscaler.app/authors/artem-grabowski.md): Founder & iOS Developer, author of the guides - [Privacy Policy](https://getscaler.app/privacy.md): What data the app collects and which third-party services it uses - [Terms & Conditions](https://getscaler.app/terms.md): Terms of use, in-app purchases and refunds - [Contact](https://getscaler.app/contact.md): Support, bug reports and feature requests (scaler@plainzer.com) ## Guides - [Looking for a Happy Scale Alternative? An Honest Comparison With Scaler](https://getscaler.app/blog/happy-scale-alternative.md): Happy Scale is one of the best-rated weight trackers on iPhone. Here is an honest look at how Scaler compares — what you get for free, where Scaler does more, and where Happy Scale is still the better pick. - [How to Set Up Lock Screen Widgets: Quick Weight Tracking Tips](https://getscaler.app/blog/how-to-set-up-lock-screen-weight-tracker-widgets.md): Discover how lock screen widgets give instant access to your weight progress. See where you stand without opening the app, stay mindful of your goal throughout the day, and make weight tracking easier. - [How to Set Up Home Screen Widgets: Maximize Weight Tracking](https://getscaler.app/blog/how-to-set-up-home-screen-weight-tracker-widgets.md): Learn how to add home screen widgets to see your weight progress at a glance. Keep your goal visible throughout the day, stay motivated, and never lose track of your progress. ## Optional - [Full content](https://getscaler.app/llms-full.txt): Overview, all guides and the changelog in a single file