A new diary can count more cleverly than the old one and still leave you at the same daily data entry.
MacroFactor makes a permanent diary as smart as a permanent diary can be. It matches logged food against your weight trend, estimates your real energy expenditure and updates the target every week.1 That is honest, well-built machinery — and it works for as long as you keep entering food.
Calk gives the diary a different purpose: understand, change, finish. After a month of ordinary eating, food observations highlight recent patterns and the monthly Nutrition Report brings them together to help you choose changes to familiar meals. Keep logging while you build those changes into habits. Once they are all part of your routine, the daily diary ends; your weight trend carries on from weigh-ins.
Food and weight update the expenditure estimate; the estimate updates the target. The cycle is built to repeat.
The check shows what to change. Once those changes are habits, daily logging ends and your weight trend carries on.
The simple test: what is left when you stop entering food#
Sooner or later you will stop. Not from weak discipline, but because entering food is work, and over time there is less and less new information in it.
Without new entries MacroFactor keeps your history but stops updating the expenditure estimate and the recommendations: there is nothing to update them from. Continuous calculation needs nutrition on at least four days out of seven.1
In Calk, stopping is not a loss:
Weight is read from Apple Health or Health Connect, or entered by hand. The chart updates with new weigh-ins.
The fourteen groups show what dropped out of your diet along with the season. A week, not a way of life.
The weekly variety screen fills up from your own entries, so a week of them is what it takes — when the season or the routine has changed.
Your saved meal templates do not go anywhere either. If a new check is needed six months from now, a familiar dinner opens ready-made instead of being assembled again.
No streaks, no reminders#
This is the first thing you notice when switching: Calk has no running streak, no “red days”, no missed-day counter and no notifications suggesting you close the day. A missed day means less data — that is all.
The only food-related notification appears in a different situation: if the weight trend has drifted seriously and persistently, Calk will once, quietly, suggest a short food check. Not every morning, not after a particularly heavy day, and not on a schedule.
How to read the trend itself, and why one morning means nothing, is in why weight changes every day.
One bowl in two systems#
Picture a bowl with rice, chicken, vegetables, sauce and oil.
- Find or create each component.
- Enter the grams.
- Save the meal.
- Tomorrow, repeat for whatever changed.
- Open the bowl template.
- Mark the protein, base, sauce, oil and portion.
- Log it.
- Tomorrow, change chicken to salmon and nothing else.
The first path is what you need when every gram matters to a training plan. The second is built for someone who will not pull out a scale in a café. The estimate is approximate on purpose: a few seconds you keep spending beat a gram-accurate diary you quit in week three. For the conclusion “protein rests on chicken alone, and legumes never appear”, approximate is plenty — a pattern that size is larger than the error in estimating a portion.
How many taps an entry takes#
MacroFactor publishes a logging speed index of its own, the FLSI: 21 apps scored in actions across four ways of logging — database search, adding several foods at once, the barcode scanner and quick-adding calories.2
Calk counts its own number, on its own scenarios: typical diets from 13 countries — the USA, Canada, the UK, Germany, France, Spain, Poland, Czechia, Russia, Israel, the UAE, Mexico and Brazil. The run of August 15, 2026 gave:
An ordinary entry averages 3.63 taps; at one to two seconds a tap, plus typing the name, that comes to six to ten seconds — arithmetic from taps, not a stopwatch reading. Repeating a saved meal needs no typing at all: the card is already the way you left it.
The count depends on how many choices the card asks for. Coffee asks none — three taps. Tea names its variety — four. Rice carries two choices, “tartine with butter and jam” three, which is where five and six come from.
Our number and the FLSI do not subtract from one another: different scenarios, different methods. Ours comes from written meal scenarios replayed against the code of the shipping app, not from telemetry. How the whole measurement works — in how many taps logging takes.3
Maintenance: a target or a range#
In MacroFactor, maintenance is a mode that holds the trend within roughly ±0.7 kg of your target weight and keeps updating the calorie target from your entries.4
In Calk, maintenance needs no food logging at all. You choose the trend range you consider normal for yourself, and then you simply weigh yourself. The app does not assign you the boundaries and does not turn them into a daily alarm; going outside them is a reason to look at your food once, not to restrict it immediately. Contest prep and a managed bulk are a different job, and MacroFactor has more control for it. More on the range in how to maintain weight without daily tracking.
Price#
As of September 5, 2026 MacroFactor has no permanent free tier: past the free trial, the US website prices for the nutrition app were $11.99 a month or $71.99 a year.5
Calk keeps food logging, daily totals, weight entry and the trend chart free. A new account opens with 30 days of full access, including Observations and your first Nutrition Report; no bank card is required. Later reports and continued access to observations need a subscription.
Choose a duration, not a feature list#
MacroFactor — if you want to keep a diary going and want it to get smarter.
Calk — if the goal is to understand your ordinary eating, change what is worth changing in it, and get out of daily logging while automatic monitoring stays.
Take the one meal you eat most often, build it in Calk and log ordinary days for a month. The report shows your usual diet and what you could change in it. The diary ends when the changes you chose have become habits.
Frequently asked questions#
How often does MacroFactor ask you to log food?
What happens in Calk when I stop logging food?
Does Calk recalculate calorie targets like MacroFactor?
Does Calk send reminders to log food?
Sources and review date#
MacroFactor’s features, logging-frequency requirements and prices were checked on September 5, 2026 against the company’s official materials.
The expenditure algorithm and how frequently you need to log. ↩︎ ↩︎
Food Logging Speed Index, 2025 update: 21 apps, four logging methods, scored in actions. ↩︎
Run of August 15, 2026, app version 1.0.7. The corpus is 13,561 dishes across 5,189 meals in 13 countries, 1,578 of them different by name. The shares and the average are measured over 13,543 dishes: only 18 stay outside the denominator, the ones naming food the catalog does not have. Where a dish’s wording allows more than one reading, it is counted at the cheapest one and the average at the dearest is published beside it — 3.63 against 3.68. Repeating a saved meal takes two taps from the food screen and three from a cold start. The seconds are taps at one to two seconds each plus typing the name, not a stopwatch reading; someone deciding whether that was one bowl or two takes longer, and no model here measures thinking. ↩︎
MacroFactor subscriptions, US website prices for a single-app subscription on September 5, 2026. ↩︎


