Comparison

Diet Diary DaDa vs Weight Calendar

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

Head to head
About

Diet Diary DaDa

Features
Read full description

Diet Diary DaDa is a weight tracker with one job: record what you weigh. Nothing else. No calories, no meals, no photos, no endless settings. Open the app, pick a date, type your weight in kg, and you're done. One entry per day - saving the same date again simply replaces it, and future dates aren't allowed. Three charts, one scrolling screen - Bar chart of your last 20 days, color-coded by range with the value on every bar - Trend line for the last 30 days with your average marked; tap any point to see that day's date and weight - Distribution circle covering every record you have, with a legend for each range Your records Entries are grouped by year. Tap one to edit it, swipe or long-press to delete it, or clear them all at once. Moving to a new phone Copy your whole history to the clipboard as text, then paste it into DaDa on the new device to restore it. Restoring replaces the data already there. No account, no sign-in, no server. Everything stays on your phone and the app works completely offline. Free, supported by a banner ad.

About

Weight Calendar

Easily log your weight multiple times a day and visualize your progress on a calendar. Track body photos and diary entries alongside your weight to monitor changes. Set weight goals and view detailed graphs to support your fitness journey.

Highlights
  • Record morning and evening weight
  • Log body photos and diary entries
  • View weight on a calendar
  • Set target weight and date
  • Weight change graphs
  • Multi-language support
Features
Read full description

The weight calendar app is an app that allows you to easily record your weight in the morning and evening, and check the recorded weight at a glance on the calendar. Record it consistently for dieting or maintaining your weight! Recommended for these people: ■ Those who want to record their weight consistently for dieting success or maintaining their weight ■ Those who want to record their weight not only in the morning but also in the evening ■ Those who want to see the recorded weight at a glance on the calendar ■ Those who want to see the changes in their body photos at a glance on the calendar as well as their weight ■ Those who want to see the changes in their weight at a glance on the graph as well as the calendar If any of the above apply to you, Try the weight calendar app! The weight calendar app will help you keep track of your weight :D Summary of app features: ■ Record morning and evening weight, eye body photos, condition, and diary by date ■ Check your weight and eye body photos on the calendar ■ Set your target weight and date ■ Provide weight change graphs for one week, two weeks, one month, three months, six months, and one year ■ Changeable between Korean, English, and Japanese ■ Change weight units to kg or lb For inquiries and improvements, please send an email to kthdd1234@gmail.com. We will do our best to help users of the weight calendar app succeed in their diet and maintain their weight! Thank you. Image source: https://webgradients.com/ https://home.streamlinehq.com/ https://www.freepik.com/

Screenshots

Diet Diary DaDa4 screens
Weight Calendar4 screens

Verdict

The call

The clearest difference is in-app purchases: Diet Diary DaDa at none against Weight Calendar's 4. Weight Calendar's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support 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

Both are free to download. Weight Calendar sells 4 one-off in-app purchases. Diet Diary DaDa asks for nothing beyond the download.

UpkeepUpdate frequency

Diet Diary DaDa ships an update every 3 weeks, Weight Calendar every 2 weeks. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 8 level
Diet Diary DaDa versus Weight Calendar: the parameters behind the verdict, then further details
ParameterDiet Diary DaDaWeight Calendar
PriceFreeFree
Rating4.9 (19 ratings) — better
Positive reviews90.3% of reviews
Number of ratings19 — better
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size4 MB84 MB
Age rating4+4+
DeveloperSeonggon Simkim donghyun

Bugs and requests

Diet Diary DaDa

Not enough reviews yet to summarise bugs or requests.

Weight Calendar

Reported bugs

6 issues
  • Backup not working properly
  • Goal weight text cut off on graph
  • Weight progress not displaying correctly
  • Units not converting correctly
  • Cannot input decimal weight values
Show 1 more
  • Photo quality degrades when viewed

Requested features

22 requests
  • Add functionality to set multiple goals (e.g., weekly goals)
  • Add option to choose weight comparison basis (morning vs. evening)
  • Add more sticker designs
  • Add more food sticker categories
  • Add ability to write text in different colors in memo
Show 17 more
  • Add option to view photos only without entering edit mode
  • Add support for Apple Health automatic syncing
  • Add BMI index display
  • Add ability to edit entry time
  • Add option to start the week on Monday
  • Add dark mode
  • Add alarm function for weight measurement reminders
  • Add option to choose average weight for a period (weekly/monthly)
  • Add ability to record body fat percentage and muscle mass
  • Add option to compare previous evening's weight with current morning's weight
  • Add ability to set future dates on calendar for weight goals
  • Add ability to input decimal weight values
  • Add functionality to set multiple goals with commas
  • Add option to view photos in full screen
  • Add ability to input 3rd decimal place for weight
  • Add option to set weekly average calculation
  • Add option to set password reset via Face ID

In-app purchases

None

Diet Diary DaDa

No in-app purchases

4 purchases

Weight Calendar

One-time4
  • Food A Stickers$0.49
  • Exercise Stickers – Lifetime Access$0.99
  • Food B Stickers$0.99
Show 1 more
  • Weight Calendar - Remove Ads$3.99

Questions

Is Diet Diary DaDa free?
Diet Diary DaDa is free to download, with no in-app purchases.
Is Weight Calendar free?
Weight Calendar is free to download, with in-app purchases available.
Do Diet Diary DaDa or Weight Calendar have ads?
Both Diet Diary DaDa and Weight Calendar show ads.
Which is updated more often, Diet Diary DaDa or Weight Calendar?
Diet Diary DaDa ships an update every 3 weeks, and Weight Calendar every 2 weeks. Most recently, Diet Diary DaDa was updated on September 17, 2026 and Weight Calendar on September 24, 2026.

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