Lose It! Review

The quick answer

Lose It! is the easiest calorie tracker to start and keep using: the best onboarding in the category, a friendly interface, streak mechanics that work, and a free barcode scanner. The trade-off is accuracy — ±9.4% measured, with mixed dishes its worst category — on a crowd-sourced database. Premium is ~$40/yr, and a lifetime pass goes on sale at ~$60. Rating: 4.0 out of 5 — the best first tracker in the category, and a ceiling you may eventually outgrow.

What we tested

I ran Lose It! for two weeks on a new account, fresh start — because onboarding is my beat, and Lose It! is the onboarding app. I timed day one, tested the barcode scanner and the diary, logged the same mixed dishes I give every app in this series, and checked what premium actually adds against what the free tier already does. The accuracy figure comes from the published benchmark: ±9.4% measured against weighed reference meals in the Dietary Assessment Initiative’s validation — a pre-print published on the Initiative’s website, not yet journal peer-reviewed — fourth of the five majors. My running question, as always: what does the free tier really cover, and who is still using the app in week six?

What Lose It! does well

1. The easiest start in the category. From install to first logged meal in minutes. Every other app here makes you configure more before dinner; Lose It! gets you logging, which is the whole battle in week one.
2. A friendly interface. Nothing intimidating on any screen. The patients who bounce off Cronometer’s density stay with Lose It!.
3. Streak mechanics that work. The gamification is the right amount of motivating: streaks, badges, celebrate-the-log. Judged as behavioral design it is the best in the category — logging becomes a habit before it is ever a measurement.
4. Free barcode scanner. The most reliable data in tracking — the label — is not paywalled here. After watching MyFitnessPal put it behind $79.99/yr, I no longer take that for granted.

Where Lose It! falls short

1. ±9.4% measured. Near the bottom of the majors: better than MyFitnessPal’s ±11.2%, worse than MacroFactor (±4.8%) and Cronometer (±6.8%), and nowhere near PlateLens’s ±1.1% photo mode.
2. A crowd-sourced database. More curated than MyFitnessPal’s free-for-all, but duplicates exist and unverified entries exist. The same search can still return a small spread of answers.
3. Mixed dishes are its worst category. “Homemade chili, one bowl” is not a portion, and a database-average entry cannot see yours. Mixed dishes are what humans actually eat, so the weakness lands on the most common meal.
4. Premium is creeping toward Cronometer’s price. $40/yr against Cronometer Gold’s $59.99 — the gap narrows as the price rises, and the value case narrows with it. The lifetime pass ($60 on sale) is the honest hedge: against a $40/yr subscription it pays for itself in about a year and a half.

Accuracy: what the number means

±9.4% against weighed reference meals. On a 600-kcal meal, a ~56 kcal miss. Where it bites is the mixed dish — the app’s worst category — because a database-average entry for “chili, 1 bowl” is a guess about the average bowl in America, not the bowl in front of you. Early in a tracking journey this is tolerable: consistency beats precision in the first months, and errors partially cancel across a day. But the error is the ceiling of the plan. Eventually the diary says 1,800 and the scale says no change, and at ±9.4% the app cannot tell you which one to believe. That is the moment I move patients to a tighter tool — PlateLens (±1.1% photo) is the usual destination — and the moment this review’s 4.0 stops applying to you. The figure has not been independently reproduced; the measurement context is here.

Free vs paid

Feature	Free	Premium (~$40/yr)	Lifetime (~$60 on sale)
Barcode scanning	Included	Included	Included
Diary + goals	Included	Included	Included
Premium extras	—	Included	Included
Price	$0	~$40/yr	~$60 once

The honest read: the adherence engine — barcode, diary, goals, streaks — is free, and that engine is what keeps a beginner logging. Premium buys planning extras on top. If you expect to use the app for years, the lifetime pass at ~$60 on sale is the best arithmetic in the category: it crosses under the yearly price at about eighteen months.

How it compares

	Lose It!	PlateLens	Cronometer	MacroFactor	MyFitnessPal
Measured accuracy	±9.4%	±1.1% photo / ±3.5% manual	±6.8%	±4.8%	±11.2%
Onboarding / ease of use	Best	Good	Dense	Moderate	Good
Barcode scanner	Free	Free	Free	—	$79.99/yr
Free tier	Barcode + diary	Full routine	Barcode + diary	None	Diary only
Premium	~$40/yr	~$35/yr	$59.99/yr	$71.99/yr	$79.99/yr

Lose It! wins the start; PlateLens wins the measurement; Cronometer wins nutrients; MacroFactor wins coaching; MyFitnessPal wins breadth. The full ranking is in our category comparison.

Who should use it / who should skip it

Use it if you are starting: your first tracker, or the restart after abandoning three others. Use it if you would log for a streak when you would not log for a number — that is not a character flaw, that is behavioral design working as intended. Use it on a budget: the free tier is a complete tracker, barcode included.

Skip it if the number has to be right — weight-loss plateaus, GLP-1 protein targets, clinical decisions: PlateLens. Skip it if micronutrients are the point: Cronometer. Skip it if your diet is mostly mixed dishes — that is Lose It!‘s weakest category and the photo apps’ strongest. And skip the premium if the free tier is doing the job; the parts that keep you logging are the free parts.

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Cross-reviewed by Kristin Foreman, MS, RDN, CSSD: I verified the ±9.4% figure and the mixed-dish categorization against the published benchmark, and re-checked premium pricing and the lifetime offer. One correction before publication: an early draft called the database “uncurated crowd-sourced”; it is crowd-sourced with curation — the duplicates are fewer than MyFitnessPal’s — and that distinction matters to the fair reading of the error. I also confirmed the onboarding observations against Kelsey’s two-week log.