Phaze tracks your calories.
Bild Health tracks your muscle.
Phaze focuses on counting calories. Onboarding is calorie-first & the plan it builds you sets calories, hydration and movement. If a robust calorie tracker is what you need, Phaze is the better choice.
If you are concerned about muscle loss, Bild Health is for you. We center you on muscle-preservation goals with protein targets, lean mass & body fat tracking and more.
Feature by feature
Phaze wins the calorie-and-meal rows and we have left them in. The rows that decide whether you keep your muscle are the ones underneath.
| Bild Health | Phaze | |
|---|---|---|
| Estimated medication level | Yes | Yes |
| iPhone and Android apps | Yes | Yes |
| Syncs with Apple Health | Yes | Yes |
| Sets a daily hydration target | Yes | Yes |
| Muscle preservation as a goal option | Yes | No |
| Protein target on the plan | Yes | No |
| Tracks lean mass | Yes | No |
| Tracks fat mass | Yes | No |
| Charts lean mass as a line over time | Yes | No |
| Body-composition readings from a smart scale | Yes | No |
| Imports DEXA scans as checkpoints | Yes | No |
| Logs resistance training against the dose | Yes | No |
| Apple Watch quick-log app | Yes | No |
Sources and disclaimers
How the rows are scored
Why these rows decide it, with the trials behind each one: The Science.
Every Phaze cell comes from one of two places, and the distinction is the whole page. Observed means we saw it in the running app on 24 August 2026 — onboarding, plan generation, the paywall and the first-day loop. Site claims means it appears in Phaze’s marketing and did not surface in that walk. A claim is not a feature until it ships where a user can find it — but a “not surfaced” is a statement about our walk, not proof the capability cannot exist behind the paid tier. A paid-tier check is the honest next step, and this page will be updated when it happens.
Checked August 24, 2026. Every claim about Phaze on this page comes from Phaze’s own published feature and pricing pages, read on that date, with the one exception noted above. Products change; if something here has gone out of date, tell us and we’ll correct it.
Where these numbers come from
- 01
Diabetes, Obesity and Metabolism · 2026 · Eisa N, Barood O. Diabetes Obes Metab. 2026;28(6):4818–4827. doi:10.1111/dom.70666. PMID 41877354.
- 02
International Journal of Sport Nutrition and Exercise Metabolism · 2014 · Helms ER, et al. Int J Sport Nutr Exerc Metab. 2014;24(2):127–138
Up to 39% of the weight lost on a GLP-1 is lean mass, not fat.
There is a narrow path to losing weight and keeping or even gaining muscle. To do so you must lift heavy and consume a ridiculous amount of protein.
Track Protein in 1-Tap.
Consuming 140–180g of protein a day is very hard. Bild Health makes it easy to track how much you consumed each day with simple 1 tap logging for protein, hydration, and exercises. You can also track from your Apple Watch. Start with the free protein calculator.
Track Weight and Muscle
Bild Health integrates with smart scales to help you track not just your weight but your lean mass as well, track both together and adjust your exercise and protein intake based on your results. See what the split looks like with the muscle-loss calculator.
Import Your DEXA Scans
Smart scales are good, but the reference most of them are checked against for body fat and lean mass is the DEXA scan. Bild Health imports your scan results and adds these to your charts beside your scale readings, giving you more data on your fat loss progress. More on how the two compare in DEXA scans vs. smart scales.
Phaze alternatives, answered
Does Phaze track body composition?
Its website and App Store listing both market body composition (an AI photo estimate) and DEXA import as paid features. We installed the shipped app on 24 August 2026 and walked onboarding through the first day: neither surfaced anywhere: not in onboarding, not on the paywall, not in the free tier. The paywall sells the AI meal camera, four-week charts and a doctor PDF. Until a paid-tier walk shows otherwise, treat the measurement features as marketing.
Is Phaze free?
Substantially, yes. The free tier we walked included dose logging with the Estimated Levels chart, meal logging by search, barcode and voice, water, and Apple Health sync; the AI photo camera is Premium's. Premium was offered at $4.99 a month or $2.91 a month billed yearly, read off the in-app paywall. It is one of the broadest free tiers among the dedicated GLP-1 trackers.
What does Phaze do better than Bild Health?
Food capture and first-run polish. Its meal logging (search, barcode, voice and recurring meals, with an AI photo camera in Premium) is genuinely good, the free tier is generous, and the onboarding is the most invested we have walked. If logging meals fast is the job and the measurement question doesn't pull at you, Phaze is a strong free choice.
Which tracks muscle loss, Phaze or Bild Health?
In the shipped apps, only Bild Health does it with a measurement. Fat and lean mass come from a body-composition scale through Apple Health, DEXA scans import from a connected BodySpec account or a report PDF as checkpoints, and the protein target is sized at 2.4 g per kilogram of fat-free mass. Phaze's plan is calorie-first: its goal options don't include muscle preservation, and its plan card carries no protein target.
How much does Phaze cost compared to Bild Health?
Phaze Premium was $4.99 a month, or $2.91 a month billed yearly, on the paywall we walked; the App Store lists that yearly purchase as 'Phaze Pro' at $34.99, alongside a second $5.99/$44.99 pair that reads as live price testing. Bild Health is free to use; Bild Health Pro is $59.99 a year with a 7-day trial on the yearly plan. Phaze undercuts our paid tier. Worth saying plainly. The price buys different things: their Premium sells meal-camera AI and longer charts; ours funds the measurement stack, from DEXA import to a protein engine sized on fat-free mass.
How current is this comparison?
The install walk was 24 August 2026, on iOS, free tier through the paywall; store listings and phaze.fit were read the same day and re-checked 1 September 2026. Phaze ships fast and this page names what would change it: a paid-tier walk is the standing next check, and the comparison note below carries the date so you can judge its freshness yourself.
Can I run Phaze and Bild Health together?
Workable, if Phaze's meal capture is what you came for: log food there, keep the measured composition record here. Give exactly one app custody of the dose history: reconciling two shot logs later is the one chore this pairing can create.
Keep the meal log. Add the muscle.
Bild Health keeps fat mass, lean mass, protein, training and your dose history in one record. The lean number is measured from your scale, anchored by imported DEXA scans.
Lose the fat. Keep the muscle.