MacroFactor review

Our take on paying for an adapting target

MacroFactor estimates how many calories you burn from your logged intake and the movement of your trend weight, then suggests targets at a weekly check-in. There is no free version, and a year costs $71.99, with a 7-day trial through the App Store or Google Play that the stores run. Its estimate benefits from daily food records and frequent weigh-ins. MacroFactor is worth considering if you want calorie targets that respond to your food log and weight trend, and will keep both records current.

How meals and weigh-ins become a burn estimate

The calculation starts with calories eaten and subtracts the change in stored energy. MacroFactor estimates that stored-energy change from the rate of weight change and the energy content of fat and lean tissue. It fills gaps between scale readings by linear interpolation, drawing a straight line between known readings, then uses a moving weight average that gives recent readings more weight.

The calculation considers about 21 days of food data. For its recommended V3 algorithm, the minimum is food logged on 4 of 7 days and one weigh-in per week. Without a weekly weigh-in, the estimate moves to holding until another weight is logged. More than three missing food days in seven also pauses updates. These are minimums, while MacroFactor prefers food logged every day.

A blank day is treated as missing information unless marked as fasting. Missing days can be estimated, but a partly recorded day looks like a whole day with less food. That is the weak point MacroFactor identifies. A partial day can affect the estimate for about three weeks.

The system is adherence-neutral. It uses what you ate and how your weight changed, regardless of whether you met its targets. Optional step and goal-change modifiers can alter how the estimate responds. Step-informed updates speed up its response when steps trend upward or downward. It does not import wearable calorie-burn estimates into the expenditure calculation or dietary targets.

For a new user, the first month starts with a formula based on onboarding details, which you can override. MacroFactor says this starting estimate can miss by more than 500 calories a day for some people. It says to expect a bigger change at the second check-in, after a full week of expenditure updates, and 3 to 4 weeks of consistent food and weight records for a more precise estimate.

What changes when check-in day arrives

On Coached and Collaborative programs, check-ins happen weekly on the day you choose. You can decline the suggested change. Coaching modules cover partial logging, weigh-ins, fasting, logging breaks and program updates. Fast Check-In skips those modules and goes directly to the new macro recommendations.

Target changes combine expenditure changes, goal changes and smoothing. In MacroFactor's example, a 500-calorie expenditure decrease over three weeks might produce only a 200 to 300 calorie change in the intake recommendation. The app expresses the goal rate as a percentage of body weight per week. It does not raise the target rate to make up for falling behind. MacroFactor also says the first check-in changes little, with a larger adjustment expected at the second.

Coached, Collaborative and Manual give different amounts of control. Coached supplies the program and its adjustments. Collaborative handles weekly calorie adjustments while you choose daily calorie and macro goals. Manual leaves the choices to you and assigns no weekly calorie budget. Coached structures include balanced, low-fat, low-carb and keto. Separately, a static expenditure estimate stops week-to-week target updates.

The food records behind search, Describe and photos

The standard search database contains around 1,360,000 verified items, compared with around 1,040,000 in the legacy database. About 26,500 standard entries are common foods with complete micronutrient data from research databases, compared with 10,000 legacy entries. A large part of the standard common-food collection comes from NCC. The legacy database belongs to another company. Its branded foods remain barcode backups, and its common foods remain available in Describe.

MacroFactor says humans check user submissions before public inclusion. It calls restaurant coverage weaker than other coverage. It describes barcode coverage as excellent in the United States, Canada, the UK, Australia, Ireland, New Zealand, Japan, France and Spain. Separately, new or updated foods can be submitted to Open Food Facts through the app, after automatic data-quality checks.

The help center lists five main logging methods. They are barcode and label scanning, food search, quick adding, Describe, and custom foods or recipes. For photos, you can take a picture, add text to a picture, or upload one from your library. The label scanner works best on US and Canadian labels.

Describe accepts a typed meal or dictation through the keyboard microphone. It searches common foods rather than branded entries. MacroFactor's example says Applebee's cheeseburger returns the same generic cheeseburger. A restaurant name in Describe therefore does not establish a restaurant-specific match.

MacroFactor says its photo AI prefers database foods and generates entries only when needed or otherwise preferable. When a brand is visible, it searches for matching branded products instead of prioritizing common foods. The company article updated April 8, 2025 calls the photo release Beta. That description comes from the dated article, rather than a new claim about the current release.

The trial ends before the estimate settles

MacroFactor says there is no free version "and will never be". Its 7-day trial starts through the App Store or Google Play, and Apple and Google handle trials, subscriptions and payments. The help center does not spell out the trial terms. The published length comes from the product page and store listings, and we found no explicit statement that the trial includes every feature.

Our view is that the trial leaves a timing problem for someone judging the expenditure estimate. Seven days of free access is shorter than the 3 to 4 weeks MacroFactor says consistent logging needs for a more precise estimate. You can assess the logging routine during the trial, but the company's own timetable puts a settled estimate later. There is also no lifetime subscription.

Budget $71.99 for annual access

The annual subscription is $71.99 in US dollars, also listed in the subscription help article. See the full MacroFactor price breakdown for the other billing options.

What the US store ratings show

Checked October 3, 2026, Apple's lookup API gave MacroFactor a rating that rounds to 4.8, from 22,808 ratings. The App Store web listing showed 4.8 with 22,819 ratings in its page data. The two counts differed on the same date.

Google Play displayed 4.8, with 17,085 ratings in its page data, a visible 17.1K reviews count and 1M+ downloads. These figures were also checked October 3, 2026. They are store scores, not our own rating.

Accuracy evidence does not yet test the whole app

We found no peer-reviewed study that tests MacroFactor's expenditure algorithm or its coaching. The search covered PubMed and Europe PMC, not Google Scholar. Its published algorithm accuracy analysis is a company blog post, not a journal paper.

In that analysis, MacroFactor excluded records showing consistent partial logging and used data from 748 challenge participants. It reported a median expenditure error of 135 calories after 3 to 4 weeks of consistent use, compared with 335 calories for formulas. MacroFactor says a laboratory validation would be prohibitively expensive and that it places greater value on predictive validity. Those are the company's results and explanation, not an independent validation.

For missing food days, MacroFactor's V3 article reports average estimation error around 13%, with more than 90% of errors below 30%. A separate help article says most estimation errors are below 15%. These figures describe missed-day estimates and should not be read as accuracy scores for every food or for coaching.

Li and colleagues, 2024 compared nutrition apps with food records. The full text names MacroFactor version 2.6.8. The study found it had the biggest alcohol discrepancy, underestimating alcohol as a share of energy by 3% compared with the reference food records. This was a food-record comparison, not a test of its expenditure algorithm.

The studies below examine energy-balance methods from different directions. None used food logged in an app such as MacroFactor. They help explain the method, but do not establish how accurately this app works with your logs.

What we like about the design

• Food intake and weight changes drive the estimate, and missing a target is not treated as failed adherence.
• The help center explains its energy-balance calculation, including the time needed for it to settle.
• Blank days remain missing data, with bounded missed-day estimation and pauses when weight data stops.
• You can decline target changes or use Collaborative and Manual programs for more control.
• Common foods draw on research databases such as NCC, and people check user submissions.
• Photo logging prefers database entries before generated nutrition.
• MacroFactor promises no ads and no sale of personal data.
• The App Store score rounds to 4.8, and Google Play displays 4.8.

What would make us hesitate

• Continued use requires payment because there is no free version.
• The 7-day trial ends before the 3 to 4 week settling period the company describes.
• A partly logged day can reduce estimate precision for about three weeks.
• Describe disregards brands when matching common foods, including the Applebee's example.
• Restaurant coverage is a stated database weakness.
• There is no desktop version for someone who prefers entering meals on a computer.
• There is no true offline mode.
• Watch and tracker calorie-burn estimates do not affect targets. This is a design choice. MacroFactor says it does not consider those burn estimates reliable enough.
• We found no peer-reviewed study that tests MacroFactor's expenditure algorithm or its coaching. The algorithm accuracy figures come from its own analysis.

The logging routine matters more than the feature list

We think MacroFactor suits someone who wants calorie targets that adjust themselves and expects to record food most days and weigh in often. Complete records give its expenditure calculation the inputs it needs. The weekly chance to accept or decline an adjustment is useful if you want suggestions without handing over every decision.

It is a poorer fit if you need a free plan, usually record only some meals, rely heavily on restaurant entries or want a computer-based food log. Those limits affect ordinary use, even if the adaptive targets appeal to you.

Compare the part of logging you care about

For a comparison of free and paid logging, read MacroFactor alongside MyFitnessPal.

For a comparison of nutrient tracking and database coverage, read Cronometer alongside MacroFactor.

TrueCal alongside MacroFactor compares meal entry and subscription access. TrueCal has free manual calorie logging. Typed descriptions, voice, photos, barcodes and macros require Pro, whose website price is $29.99 a year or $9.99 a month. The nutrition results are estimates and can be wrong. For eligible customers, the 14-day free Pro trial is available only in the iPhone and Android apps, and is run by the App Store or Google Play.

Answers before you start a trial