Who pays for a free diary?
Somebody, and the diary is where they collect. A food diary costs servers, a database and people to keep it running, and when the person keeping the diary pays nothing, the money comes from a second customer: an advertiser buying the screen, or the same person later, buying back the features that were held out. Neither is a scandal. Both change what the diary is for, because a screen that is sold is a screen designed to be looked at, and a feature held back is a feature the diary keeps mentioning.
The incumbents describe the arrangement on their own pages: MyFitnessPal, YAZIO and Cronometer each list an ad-free experience among what their paid tier adds, read on 14 and 15 September 2026, and Lose It!'s page does not say either way. The free-tier comparison has each seller's wording; this article is about why the arrangement exists and what it changes.
What that looks like from inside is in the complaints. One that comes back across the reviews and threads read on 4 September 2026 is a full-screen ad that plays while a meal is being logged. The person is not browsing; they are standing in a kitchen with a plate going cold, and the screen is being sold at that moment because that is when they are certain to look.
What else does free cost, besides the ad?
The features that were held out, and the reminders. On the same sellers' pages, MyFitnessPal keeps "custom macros and goals" and voice logging for paid tiers, and its reviews, read on 4 September 2026, add that barcode scanning moved behind Premium, which is the reviewers' account rather than the seller's; Lose It! keeps macronutrients for Premium, YAZIO keeps detailed nutrients for PRO. A free diary that shows the calories and hides the protein is a diary that mentions the paid tier every time you look for the protein.
| What free includes | What sits behind the paywall | Where the free tier can remind you |
|---|---|---|
| The diary, the database, a daily calorie goal | Ad-free logging, at MyFitnessPal and YAZIO by their own pages | During the meal, when the ad plays |
| Calories per day | Macro goals in grams, or the macros themselves, depending on the app | Every time you look for the protein |
| Typing a food | Voice logging, at MyFitnessPal and Cronometer | Every meal said out loud |
| A 7-day trial of the paid tier, at MyFitnessPal | Everything above, once it ends | The day it ends |
Bottom line: a free diary is a paid diary shown to you one feature at a time, with an ad in the gap.
None of this makes the free tiers bad value, and none of it says a free diary works less well: four of the five apps in the free-tier comparison, MyFitnessPal, Lose It!, Cronometer and YAZIO, give a working diary for nothing, MacroFactor has a trial only, and for plenty of people that is the right deal. The point is narrower, and it is about who else is being served rather than about how good the diary is. A diary paid for by advertising has a second party to answer to, and the screen it sells is the one you are standing in front of with a plate going cold. What that costs you is yours to weigh.
What changes when the diary has one customer?
IZeat is the calorie tracker inside ChatGPT, Claude or any other assistant. Tell the assistant you already use what you ate instead of searching for foods and entering them one by one. It has no free tier: a trial without a card, then a subscription, and the prices are on the price card rather than in this text. That one decision is what removes the second customer, and everything below follows from it.
No ads, at any price, anywhere: not in a meal, not in a reply, not on the day page. No upsell inside the product: the receipt after a meal says what was recorded and what is left, and never that a better tier exists, because there is one product: the same diary on a monthly or a yearly plan. The macros are on every item from the first day, with the source on each item, since there is no tier to keep them for. And the analytics see pages, never food: nothing about what you ate goes to an analytics service or an advertiser, which is a promise a diary with an advertiser cannot make in the same words. What you say to your assistant stays under its provider's policy.
Lunch, said in a chat on the fourth day of the trial: "180 g of grilled chicken, 150 g of rice and a plain yoghurt." The receipt comes back with three rows, their sources, the meal's calories and macros, the day so far and what is left. That is the whole of the reply. Nothing plays first, nothing is held back, and the reply on the fortieth day reads the same as on the fourth.
The fair objection: a diary with one customer costs that customer money, and a free one may be the right choice for you. What a paid diary owes in return is what IZeat sets out to give: public prices, a trial that asks for no card, no ads and no upsell, an export of your whole record as CSV or JSON, with one download for each format, and cancellation and a refund request from the account page. The leaving article goes through each.
Frequently asked questions
Short answers to the questions people type, each one sourced above.
Who pays for a free calorie app?
Because a diary costs money to run and the person keeping it is paying nothing, so the money comes from an advertiser buying the screen, or from the same person later, buying back the features held out. Three of the four with a free tier say so on their own pages, where "ad-free" is listed as a paid feature; Lose It!'s page does not say either way. It is not a scandal; it is the arrangement, and it shapes when the diary interrupts you.
Does IZeat have a free version?
No. There is a trial without a card, long enough to say a week of meals and read the day, and then a monthly or a yearly plan; the prices are on the price card. The trial is the whole product, not a cut-down one: macros on every item, the source on each item, no ads. Not having a free tier is what keeps a second customer out of the diary.
Does IZeat ever upsell inside the app?
No. There is one product and no higher tier, so the receipt after a meal has nothing to sell: it says what was recorded, the meal's figures, the day so far and what is left, and stops. The day page shows the day. The only place a plan is mentioned is the account page, where you can see yours, cancel it, or ask for a refund.
What does IZeat do with my food data?
Keeps it, shows it back to you, and uses it for nothing else: no advertising, no training of a model by IZeat, and analytics that see pages, never food. It is written on the privacy page in plain words. What you say to the assistant itself is under its provider's policy, which is separate. Your whole record exports as CSV or JSON, with one download for each format, and deletion is yours to do.
Is a paid calorie tracker worth it?
That depends on what the ad and the paywall cost you, which is a personal answer. Four of the five apps in the free-tier comparison give a working diary for nothing, and for many people that is the right deal. What a paid diary owes in return is public prices, a trial without a card, no ads and no upsell, an export of your whole record, and a way to leave in one click; IZeat is built to that standard, and the price card says what it costs.
Can I try IZeat before paying?
Yes, without a card: the trial starts with the first use of the account and is the whole product. Say your meals to the assistant you already use, read the day on the web app, correct a row by saying so, export the record if you like. If it is not for you, nothing was charged and you delete the account yourself from the account page; if it is, the plans and their prices are on the price card.