Phebe Precision Nutrition
Zachary Ramsay Health & Fitness iPhoneiPadiPod touch
Phebe Precision Nutrition is a free Health & Fitness app for iPhone and iPad by Zachary Ramsay. Requires iOS 15.1. Updated October 23, 2026.
- Price
- Free
- on the App Store
- Size
- 44 MB
- Age 4+
- Updated
- Oct 23
- 2026 · v1.3.0
Screenshots
About Phebe Precision Nutrition
Phebe (say it like Phoebe) is personalized precision nutrition, built by a PKU family. It counts phe, protein and all 18 amino acids, plus calories, macros, minerals and vitamins, meal by meal, against the daily targets you set. Made for PKU, for every metabolic diet, and for anyone who tracks a specific nutrient. MADE FOR PKU • Phe in milligrams on every food and every meal, with tyrosine beside it. Today shows how much of the day's phe is left. EVERY METABOLIC DIET • Every amino acid has its own daily target, so Phebe counts whatever your diet limits: leucine, isoleucine and valine for MSUD, tyrosine and phe for tyrosinemia, methionine for homocystinuria, protein for urea cycle disorders, isoleucine, valine, methionine and threonine for propionic and methylmalonic acidemia, lysine and tryptophan for glutaric acidemia type 1. ANY NUTRIENT YOU COUNT • Protein for training, sodium, iron, fiber, vitamin D: choose what you track and set your own targets. EVERY MEAL COUNTED • Search the built-in food database, scan a barcode, or photograph a nutrition label. All three end on the same screen: set the portion, log it. • Connect a Bluetooth kitchen scale and the weight flows straight into the entry. • Favorites log in one tap. Build a recipe once and log the dish. YOUR DAY, YOUR TARGETS • Today shows where the day stands against your targets, in milligrams for every amino acid. • Diary keeps every day. Trends and reports on the web show the patterns. • Keep a streak: breakfast, lunch and dinner logged the same day counts. • Connect Apple Health to see your steps beside your diary. Phebe only reads your steps and never writes. PHONE AND WEB, ONE ACCOUNT • Start with no account; everything works on your phone. Create a free account to back up your record and open it at app.phebe.life. • Metric or imperial, dark or light: your choice, on both. A DATA CO-OP FOR YOUR BENEFIT • Your record is yours. Members can choose to contribute de-identified data to research, and the value returns to members. FREE, NO ADS • No paywall, no ads, no catch. — Phebe helps you count and understand what you eat. It is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. It is not medical advice and is not a substitute for your care team. Talk to them before changing your diet, formula, or medication.
What’s new
Version 1.3.0 · Updated October 23, 2026
Phebe now runs on the newest versions of the frameworks it is built on. Nothing changes in how you use it. On iPhone it needs iOS 16.4 or later.
App privacy
The developer, Zachary Ramsay, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Name
- Identifiers: User ID
Used for: App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Fitness
- User Content: Photos or Videos
Used for: App Functionality