People starting semaglutide or tirzepatide face a dose escalation that runs for several months, and the detail that matters during that period is easy to lose. Which week did the nausea peak? Did it follow a dose increase? What has the weight trend actually been since the first fortnight? Most patients arrive at their review appointment relying on memory.

GLP1 App is a free web-based tracker built to close that gap. It records the weekly dose and the date it was administered, the injection site so that abdomen, thigh and arm are rotated properly, a single weekly weight taken the same way each time, and side effects with a severity note and start and end dates. It also tracks appetite and food tolerance, which is often the earliest signal that a titration step has been too aggressive.

The output is a dated summary a patient can show a prescriber, turning a conversation about whether to hold, increase or switch a dose into a factual one. There is no app store download and no account cost for the core tracker.

The tool is available at GLP1 App. A companion peptide dose calculator is published alongside it.