Calories show what is left; the protein bar fills toward a goal#
Open Today and the two biggest numbers are calories and protein, side by side, with carbs and fat smaller underneath. They look like a matched pair, and these displays can be easy to confuse. The calorie lane shows what is left of your daily target as you eat: "640 left", and past it, "120 over". The protein bar fills toward your goal, while its label counts down the grams still needed: "48 g to go", and once you reach it, "met ✓". Aim around your calorie target and reach your protein goal; fewer calories is not automatically better.
Reading them that way changes what a good day looks like. A day that ends "90 left" and "met ✓" stayed close to the calorie target and reached the protein goal. A day that ends "90 left" and "60 g to go" stayed near the calorie target but fell short of the protein goal. Whether you should track both at all, or one of them, is a separate question answered in should you track protein, calories, or both. This post assumes you track both and explains why the screen gives protein equal billing, and how to read what it shows.
Why protein gets equal space: it helps preserve lean mass#
When you eat less than you burn, you lose weight, and some of it is lean tissue rather than fat. How much protein you eat changes that mix. A meta-analysis of 24 randomized trials with 1,063 participants compared energy-restricted diets. The trials prescribed equal-calorie, low-fat diets with different proportions of protein and carbohydrate. Over an average of about 12 weeks, the higher-protein diets produced slightly more weight loss (0.79 kg), more fat loss (0.87 kg), and a smaller loss of fat-free mass, by 0.43 kg (95% CI 0.09 to 0.78)1. The authors called the benefits "modest", which is the right word.
A later review of people with obesity put that in context. Diet-induced weight loss reduces muscle mass without necessarily reducing strength, and overall physical function tends to improve with weight loss, most likely because of the lost fat. High protein intake helps preserve lean mass during weight loss but did not improve muscle strength, and the authors advised "adequate (but not excessive)" protein alongside physical activity, particularly resistance exercise, which preserves muscle and also builds strength2. At the far end of the range, a trial in 40 young men with overweight undertaking an intensive, four-week training program, six days a week on roughly 40% energy restriction, found that doubling protein from 1.2 to 2.4 g/kg a day changed mean lean mass by +1.2 kg versus +0.1 kg3; that is a narrow population and a short, demanding program, and the fuller discussion is in protein and muscle preservation while dieting.
An energy deficit drives weight loss; adequate protein and resistance exercise help preserve muscle.
That is the design reason for putting protein next to calories rather than under a Macros tab. The calorie target can be approached by eating less of anything. The protein goal usually has to be met on purpose, by choosing foods, and it can slip on a light day. A screen that only showed calories would leave that second goal out of view.
What protein does and does not do for hunger#
Protein is often sold as the macro that stops you being hungry. The evidence is gentler than the slogan. A review of the acute feeding studies found a modest satiety effect, with greater reported fullness and higher satiety hormones after higher-protein meals, but it did not support an effect on how much people ate at the next meal4. The same review noted that shorter, tightly controlled feeding studies consistently showed benefits of more protein, while longer-term studies gave limited and conflicting results, likely because people drift back toward their usual intake.
So the protein lane is not a hunger switch. Its job on the screen is simpler: it keeps a number visible that is easy to miss and that matters for body composition. How much protein that number should be is a separate question, covered in how much protein per day.
Where the two numbers appear, and how to read each#
| Where | What you see | How to read it |
|---|---|---|
| Today, top | Calories left or over; protein bar filling, with grams to go | Aim around one, reach the other |
| Today, lanes | Each lane split into one segment per meal; planned meals hatched | Which meals carried the day, and what the plan still adds |
| Left to eat | Grams of protein, carbs and fat still open | What would finish the day well |
| Meal cards | Calories, then a line of macro icons with protein in its own color | Which meals were protein-heavy at a glance |
| Log receipt | CALORIES and PROTEIN, and the change, like "+420 cal · +32 g protein" | What this one meal did to the day |
| Library | A Protein per calorie sort ranking saved foods by "N g per 100 kcal"; nothing is logged until you tap and confirm | Which saved foods carry the most protein for their calories (best protein per calorie foods) |
| Weekly report | Average daily calories and protein; notes like "Protein on more days" | Whether protein is a habit or a lucky day |
A few details are easy to miss:
- "Met" is not "over". Past your protein goal, the lane says met rather than counting into an alarming "over". Eating more protein than your goal is not treated as a mistake.
- Unknown is not zero. If a food's protein could not be estimated, it shows "—" rather than 0 g. A dash means protein is unknown, not zero; the displayed total may be incomplete.
- Planned meals count. If you have booked dinner, the protein it will add is already drawn as a hatched segment, so "to go" reflects the plan as well as what you ate.
FAQ#
Why do the calorie and protein numbers read differently?#
Because they are different kinds of goal. Calories are a target to aim around, so the lane shows what is left or how far over you are. Protein is a goal to reach, so its bar fills and its label shows the grams still to go, then says met.
Is it bad to go over my protein goal?#
The app does not treat it as a problem: past the goal the lane simply reads met. Reviews of weight loss advise adequate rather than excessive protein, so the goal is a floor to reach, not a number to maximize.
What does "g to go" mean on the protein bar?#
It is the number of grams still needed to reach your daily protein goal, counting both what you have eaten and any meals you have planned for later today.
Why does a meal show a dash instead of protein grams?#
A dash means the protein value is unknown for that item. A dash means protein is unknown, not zero; the displayed total may be incomplete.
Sources#
- Wycherley TP, Moran LJ, Clifton PM, Noakes M, Brinkworth GD. Effects of energy-restricted high-protein, low-fat compared with standard-protein, low-fat diets: a meta-analysis of randomized controlled trials. Am J Clin Nutr. 2012;96(6):1281-1298.
- Cava E, Yeat NC, Mittendorfer B. Preserving healthy muscle during weight loss. Adv Nutr. 2017;8(3):511-519.
- Longland TM, Oikawa SY, Mitchell CJ, Devries MC, Phillips SM. Higher compared with lower dietary protein during an energy deficit combined with intense exercise promotes greater lean mass gain and fat mass loss: a randomized trial. Am J Clin Nutr. 2016;103(3):738-746.
- Leidy HJ, Clifton PM, Astrup A, et al. The role of protein in weight loss and maintenance. Am J Clin Nutr. 2015;101(6):1320S-1329S.
Source: BurnWeek — "Reading the calorie and protein numbers in BurnWeek", https://burnweek.fit/blog/why-protein-sits-next-to-calories/. Licensed CC BY 4.0: free to quote or reuse with a link to this page.
