Medical disclaimer. This page is for tracking and education only. It is not medical advice and it never recommends doses. Talk with your prescriber or care team before you change, lower, or stop any medication. Ozempic, Wegovy, Mounjaro, and Zepbound are named only to describe what readers search for.
What this app is for
Ballast is a planned iPhone app for adults who are tapering, have stopped, or are maintaining after a GLP-1 medication. It is for tracking and education only, not medical advice.
You can use it to log patterns that may be useful to review with your prescriber or care team. The app does not tell you what to do with your medication.
If you want practical context while you wait, see the guides and tools.
Weekly weight trend with a regain band
The app will show a weekly weight trend so you can follow the direction of change over time instead of reacting to a single day.
You will be able to set an adjustable regain band. That can help you notice when weight is moving outside the range you want to watch, without turning the app into a judgment tool.
It is meant for awareness only. It does not promise to prevent regain or keep weight off.
Protein and fiber targets
The app will estimate protein targets from body weight. A joint advisory notes that the adult RDA is 0.8 g of protein per kg of body weight per day and that suggested targets of 1.2 to 1.6 g/kg per day have been proposed during active weight loss. People with kidney disease or a clinician-set limit should follow their clinician.
For fiber, the app will focus on food quality rather than gram goals. Adults are encouraged to eat more fiber-rich foods such as vegetables, beans, fruit, and whole grains, and to increase fiber slowly and drink water.
If eating feels hard, talk with a clinician.
Strength log and appetite check-in
The app will include a strength log so you can record resistance sessions and see whether you are getting close to a steady routine. Protein alone is not enough without strength training, according to the advisory.
It will also ask for a weekly appetite check-in from 1, quiet, to 5, loud. That can help you notice shifts in hunger and fullness patterns over time.
These logs are for tracking only and do not diagnose anything.
A taper timeline you fill in yourself
If you are working through a taper plan with your prescriber, the app will let you record the dose steps you type in yourself. It will not calculate, validate, or suggest doses.
That means the timeline can hold your notes in one place without making medication decisions for you. Those decisions belong to your prescriber or care team.
For background reading, you can also browse the guides.
Private by default
Your data will be stored on the device. There will be no account.
The app will let you export and delete everything. It will also include a medical disclaimer so it stays clear that the app is for education and tracking only.
That design is meant to keep the experience simple and private.
Join the iOS waitlist
The app is not live yet. If you use an iPhone and want updates, you can join the waitlist for Ballast.
An iOS version is planned. Android and web versions are not offered.
If you are looking for tools to use now, visit the tools page.
Join the iOS waitlist from Get the app.
Key facts
- In SURMOUNT-4 (JAMA 2024), from week 36 to week 88 people switched to placebo gained 14.0% of body weight, while those who continued tirzepatide lost a further 5.5%. Source
- A joint nutrition advisory (2025) says 1.2 to 1.6 g of protein per kg per day has been suggested during weight loss; the adult RDA is 0.8 g/kg. These are suggested targets, not requirements. Source
- Fiber guidance generally encourages more vegetables, beans, fruit and whole grains; add fiber slowly and drink water. Source
Sources
- SURMOUNT-4, JAMA 2024 (PubMed 38078870)
- Joint advisory on nutritional priorities with GLP-1 therapy (PMC12304835)
- National Academies: Dietary Reference Intakes (secondary confirmation of fiber reference amounts)
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