Comparison

LightFasting vs Food_Diary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LightFasting

This app offers a scientific approach to weight loss by guiding users through a slightly high-intensity diet. It includes tools for calorie conversion, calculating ideal weight, basal metabolic rate, and BMI, along with tracking weight changes and energy intake.

Highlights
  • High-intensity diet guidance
  • Calorie and Joule conversion
  • Standard weight calculator
  • Basal metabolic rate calculator
  • Body mass index calculator
  • Energy intake tracking
  • Weight change tracking
Features
Read full description

If you can't stick to the exercise, what if you can't see the effect of dieting? Use the "Light Diet" App to help you lose weight faster and more scientifically. -- Traditional dieting specifies the length of time by timer, but it is not only inefficient, but also needs to keep an eye on the time. It is easy for people to give up halfway because of too much trouble. Light dieting is different. Light dieting on a daily basis can effectively reduce the weight of people with excessive daily energy intake through a slightly high-intensity diet. Believe that as long as you persist, you will be able to get rid of the harm of overweight! The product also includes the following extension tools: Calorie Joule conversion (the energy on the bottle bag can finally be easily converted) Standard weight calculator Basal metabolic rate calculator Body mass index calculator Energy intake record Weight change record

About

Food_Diary

This app provides a visual food diary on a calendar, allowing you to see all your meals at a glance. It uses AI to generate meal images and estimate nutrition even if you forget to take a photo, and helps make sense of your health data by comparing it to averages.

Highlights
  • Visual meal diary on a calendar
  • AI-generated meal images
  • Estimated nutrition for meals
  • Health data comparison to averages
  • AI prompt for data breakdown
Features
Read full description

See every meal at a glance. A visual food diary on your calendar. THE PROBLEM You want to track what you eat, but you forget to record meals or miss taking a photo. And even when you do track your health, Apple Health gives you numbers without context — no baseline, no averages, no way to know what they actually mean. WHY EXISTING SOLUTIONS FAIL Most food trackers show you lists and numbers — not a visual picture of what you ate. If you missed taking a photo, there's no way to add one after the fact. And none of them help you make sense of your health data. THE SOLUTION FoodDiary lays out your entire month of eating — breakfast, lunch, and dinner — on a familiar calendar. Forgot to take a photo? Apple Intelligence generates an image of your meal and estimates its nutrition — even days later. Your health data, made meaningful. See how your numbers compare against averages for men and women, and copy a ready-made prompt into any AI for a plain-language breakdown of what it all means. Free use includes banner ads. Remove ads permanently with a one-time purchase. No subscription.

Screenshots

LightFasting4 screens
Food_Diary4 screens

Verdict

The call

The clearest difference is review sentiment: LightFasting at 83% against Food_Diary's 0%. LightFasting also leads on ads (none vs shown) and device support (4 vs 2). Food_Diary's advantage is price (Free vs $0.99) and update cadence (fortnightly vs every 2 months). On in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Food_Diary is free to download; LightFasting costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

LightFasting ships an update every 2 months, Food_Diary fortnightly. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard7 real differences · 3 level
LightFasting versus Food_Diary: the parameters behind the verdict, then further details
ParameterLightFastingFood_Diary
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews83.3% of reviews — better0.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 2 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size44 MB72 MB
Age rating12+4+
Developer兴龙 张Seung-Un Ham

Customer experience

LightFasting

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral16.7%
Negative0.0%

Food_Diary

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

LightFasting

No in-app purchases

None

Food_Diary

No in-app purchases

Questions

Is LightFasting free?
LightFasting costs $0.99, with no in-app purchases.
Is Food_Diary free?
Food_Diary is free to download, with no in-app purchases.
Do LightFasting or Food_Diary have ads?
Food_Diary shows ads; LightFasting does not.
Which is updated more often, LightFasting or Food_Diary?
LightFasting ships an update every 2 months, and Food_Diary fortnightly. Most recently, LightFasting was updated on October 24, 2026 and Food_Diary on October 22, 2026.

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