DoFasting reviews
What users love and hate, from real reviews
An intermittent-fasting tracker that sells a "personalized plan" off the back of a quiz but ships a plain timer with an article-and-recipe library — so it wins beginners who want structure and reminders, and loses everyone who expected an individualized program.
What users love
Explaining the fasting stages changes behavior — that's the real retention hook
Tips about what happens in the body at each stage (entering fat-burning) act as a behavioral anchor: knowing fat-burning is about to kick in, users skip the snack and push the fast to the finish. That turns the timer from a passive counter into a motivator, and it's exactly this effect beginners reward with high ratings — the app gives the wait a meaning instead of just ticking off hours.
This is the first fasting app I have used that puts fasting in perspective with the levels at each stage. Because you know you are in fat burning mode, you are less likely to have that snack and ruin your fast.
I liked doFasting app a lot especially with water tracking, customer support and information on what happens at each stage during fasting. They also provide exercises at all levels.
this app makes it a lot easier to keep track and allows to feel great when you achieve your daily goals , I highly recommend it as a fasting tool
Simple onboarding and water tracking win the beginners who need structure
For first-time intermittent fasters, the low barrier to entry is the real strength: the app sets the schedule, reminds you when to start and stop, and keeps water, calories and weight in one place. That tidiness and the "third-eye" feeling give a beginner the structure they can't impose alone, and this is exactly where the early-weeks weight-loss success stories cluster.
The app guides my fasting, what times to start and break. It is like a third eye and I am getting better now.
I'm a newby, but so far, the app keeps me on track with fasting and hydration and accountable for my calorie intake.
I love that it works out my eating and fasting times and alerts me of both. The water monitoring is great and so is the ability to save your foods and calories.
What users hate
The quiz promises a personalized plan, but inside you just pick the same options yourself
A long quiz about age, weight and goals sets up the expectation of an individualized program — yet after payment the user picks their own fasting window, decides what to eat and logs their own workouts. The gap between the pitch and the product turns "personalization" into the single biggest source of regret and refund demands: people pay for an algorithm and get a set of presets.
there's nothing "personalized" about it. I still chose my fasting times, I still choose what I eat and what exercises I do
Once you pay and sign up, you just pick from an array of options yourself, any of which you could find by Googling
It's just a gimmick of how they tell you that they have "personalized plan" for you. Once you paid and start using the app, there are no "personalized plan" to choose from
Activity sync is locked to Fitbit and Google only, blinding the app to everyone else
Steps and activity are pulled exclusively from Fitbit or Google, with no manual entry at all. A huge slice of users on Samsung, Garmin, Apple or Polar watches is shut out: their workouts, swimming and aerobics simply never reach the daily picture, and the app sees only part of their real effort. For a wellness product this is a blind spot that hollows out the log for an entire segment.
Big fail is that it will only track activity on fitbit or Google! I have a Samsung active watch and account, I am not going to activate another app/account. And there is NO option to manually enter activity.
there are only 2 options for synching activity. Unless you have a FitBit or Google tracking device you can't sync activity. Should be able to sync a Garmin or Apple watch as well.
it will only log exercise if you link it to some tracker, which I don't have. And you can only log steps. I'm sorry, but I do more than walking. I swim a lot and I do aerobics.
Custom meals don't persist, turning food logging into a daily grind
The food database is thin, so most items must be entered by hand — but those custom entries don't carry across categories and get wiped fast: what you log for lunch can't be picked for dinner, and "recent" holds data a day or two. So someone who eats the same things spends ten minutes re-entering them every time. This breakage kills the daily logging habit and pushes people to MyFitnessPal.
Custom meals aren't saved, and can't be marked favorite, therefore every time I eat a repeated custom meal, (3+ times/week) it takes ten minutes to log individual foods, calories, & macros. "Recent foods" list keeps custom meal info a day or two at most, & updates wipe them away.
then these items I logged are not available under any other category (logged food for lunch, cannot select it as dinner another day). Too time-consuming and quite clunky.
custom added food has to be under a specific food course like (breakfast) but that same food cannot be found under dinner. You have to re-enter it
The barcode scanner and calorie counts are wrong — the core tracking tool erodes trust
The barcode scanner fails even on mass-market products, and the database calories diverge from the labels: a 70-kcal serving suddenly jumps to 540 when selected. When the very tool people install a weight-loss app for hands back wrong numbers, users stop trusting it and count calories by hand via Google — meaning the product no longer does its core job.
The food scanner doesn't work for most foods.
The calorie tracker is useless for scanning barcodes; it hasn't recognised a single barcode I've scanned. MyFitnessPal is way better.
if you find something listed as 70 kcal per serving, when you click on it the amount jumps to 540. Why? I think I know what I'm trying to enter.
For the IF audience the timer is a commodity easily replaced by the phone clock
The core of the product — counting down the fasting window — is something users see any free alarm or calendar already does. Over and over comes "it's just a timer, I can do this on my phone." This positioning vulnerability means all the value rests not on the timer but on the layer above it (recipes, stages, reminders) — and if that layer doesn't convince, the product instantly collapses to a free alternative.
I can do this with my calendar and clock.
Most people just need a clock to do intermittent fasting.
It's literally just a timer. The food log has minimal food in it. You are better off using the fitbit app.
Start/end-fast notifications don't "stick" — and the app punishes users for its own glitch
When users start or end a fast via a push notification, the action often fails to record, and the app then accuses them of "missing a fast." Inside the app everything is fine — so the failure is in the engagement channel itself. Users work around it by turning notifications off and doing everything manually. But that breaks the main retention mechanism — the reminders that should pull people back instead manufacture false reproaches.
when I start or end fasts by notification, it doesn't "take" and I get messages that I've missed fasts, etc. However, when I go into the app, everything is as it should be
I'd get a notification asking to start fast, click it, but it doesn't actually register on the app, so when I open the app to start a new fast it still has me on the eating window
Doesn't always remind you and is intermittent in recording beginning and ends of fasting/ eating periods, have to do a fair bit of catching up.
A scolding message for missing the eating window alienates the users it should support
If a user steps even a couple of seconds past the allotted eating window, the app fires off a reproachful message. For an audience already wrestling with eating habits, a judgmental tone is a sure way to push them out: discipline turns into guilt. This is a product decision about voice, and it works against retention precisely for the people who need gentle support, not punishment.
I get a nastygram message in the app if I'm even 2 seconds past my allotted eating window. That's a surefire way to piss people off.
I like knowing when to start and end my fast. I hate getting the promotions. I'm not paying for anymore than I already do.
The reminders aren't too pushy like some reminders can be
The branded scale is a proprietary brick without the app — a risky hardware-to-software lock-in
The DoFasting smart scale measures not just weight but muscle mass, water, bone density and BMI — yet all of it is unlocked only through the app. When the app breaks or the subscription lapses, the expensive device drops to being a plain scale. Tying valuable hardware to unstable software creates a double point of failure: a user who bought the scale feels held hostage, and a single pairing error zeroes out the whole purchase.
I also got suckered into the scale, which I thought was great for BMI, weight, muscle, water...pretty comprehensive. It's great, ONLY if you have the APP! It's a proprietary piece of equipment, does absolutely nothing without the app.
now the app/scale doesn't work. It will only let me into my weight manually, but I wanted to see my bf, muscle mass, water, bone, etc.
So the scale I bought is just for weight now, a subscription is required for the features and I can't use them.
Recipes hold the Western user but miss real diets and keto/Asian cuisine
The recipe library is a clear plus for many, but the "personalized" selections ignore the stated diet: a keto plan surfaces pasta, bread and potatoes, and there's almost no Asian or Indonesian cuisine. A user who doesn't know better won't lose weight on that plan, and an experienced one won't trust the curation. Recipes create the appearance of personalization, but without a diet filter they undermine trust in the program as a coherent nutrition system.
I am doing keto and in my "selected" meals are pasta, bread and potatoes, if i hadn't had experience with keto i would never lose weight with this app.
meals/food recipes based on western food not much on Asian or Indonesian
Easy to learn, recipes are great and it keeps you on track.
US-only measurement units with no toggle alienate the international audience
Water in ounces, no millilitres, litres or pints, prices and calories in dollar logic — and no toggle to familiar units. British, South African and other non-US users immediately hit the need to convert every figure just to enter data. This localization gap creates instant friction in the most frequent action (logging water and food) and tanks engagement across an entire geographic segment.
Everything is American! I'm English, I don't have a clue how many ounces a glass of water is! We work in milliliters/litres, or pints. There's no option to change the measurements.
Está todo en inglés y no me permite cambiar el idioma!!!
The $ exchange rate makes this a very expensive "need" for South Africans.
Marketing under "Fast Like a Girl" promises cyclical fasting the app doesn't have
The app surfaces in searches for the popular book Fast Like a Girl about cycle-synced fasting for women — yet there is no cycle tracking and no adjusting of fasts to its phases inside. Women who came specifically for that feel misled, all the more since the product team has a female Head of Nutrition. The mismatch between positioning and functionality loses exactly the segment the targeted marketing attracted.
This app comes up on Google for Fast Like a Girl, which is a popular book and set of fasting techniques for women. In fact, it does not have ANY functionality to support hormone tied cyclical fasting, it's just a standard fasting app.
it's quite disappointing to see the app, whose Head of Nutrition & Wellness is a woman, doesn't offer to track female users' cycle and suggest fasts (or no-fasts) for different stages of their cycle
Paid for the app after reading Fast like a girl, and what a disappointment! didn't receive any kind of plan.
No back-dating of food entries breaks logging for busy and forgetful users
If a user forgets to enter food on time, they can't add it for yesterday — logging only works on the day of consumption, before day's end. For a busy, forgetful audience this hard limit means gaps in the diary that can never be filled, and therefore a wrong calorie picture. The product demands the very discipline it should be compensating for, and loses the people whose day doesn't always go to plan.
Unable to go back and add anything forgotten for prior day
I just wish I could go back and get caught up on adding my food, say, the day after. But with this app, you have to add your food the day of. Before you end your day or you can not go back and add or change anything.
App doesnt let you go back and log food the next day, if you forget to log it.
The subscription charges before the product ever proves its value
The quiz dead-ends straight into a "subscribe" screen, with full access gated until payment — so the user must pay before seeing any value at all. In a niche where the skeptic's core objection is "a free timer does the same," demanding money up front is a strategically losing moment: churn happens before activation, before the fasting stages and recipes ever get a chance to hook. This isn't a price gripe — it's a sequencing error in how value gets proven.
Quiz was better than most but it ended on the "you must subscribe" page. I'm not giving you money unless I think you have value and you've shown me nothing.
App started off very simple until you entered your email address then they want to charge you. There is no free portion of this app period.
You can't use this app without paying. Doesn't offer a trial period.