# Trendcurve > iOS app for your weight trend: smoothed instead of daily noise Trendcurve is an iOS app made in Germany for people who track their weight over longer periods. Instead of judging the heavily fluctuating daily reading, the app smooths measurements with the selected method (exponential smoothing by default, alternatively a 7 or 14 day average or double exponential smoothing), shows the change against the previous week and derives a target date from the current weekly rate. Pro adds a calorie budget, plateau detection and progress photos. All data stays on the device; there is no server and no account. - Platform: iOS (iPhone) - Languages: German, English - Price: Free with an optional Pro upgrade (subscription or one time purchase) - Website: https://trendcurve.app - Units: kilograms, pounds or stones - Category: Health & Fitness ## Documentation - [Full information](https://trendcurve.app/en/llms-full.txt) - [Deutsche Fassung](https://trendcurve.app/de/llms.txt)