Once(A special period tracker) at App Store analyse

App power index: 180 (based on ranks around App Stores today)
Lifestyle Health & Fitness
Developer: Malang Studio Co. Ltd,
Price: 0 free
Current version: 1.8.7, last update: 9 months ago
First release : 17 Jun 2015
App size: 74.74 Mb
4.4 ( 2864 ratings )
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Estimation application downloads and cost

> 3.96k
Monthly downloads
~ $ 1.62k
Estimation App Cost


To all the women who need a calendar to write down upcoming period
To all the women who need a journal to manage irregular period cycle and cramp
To all the women who want to know ovulation, fertile, birth control, and possibility of pregnancy all in one calendar
To all the women who were bothered to mark their period on the calendar
To all the women who secretly recorded symptoms on their planner
Must-have! Period tracker, Once!
[Kept both simplicity and functionality of period tracker!]

** Estimated period calendar which gets more accurate as you use it!
Once automatically calculates your irregular period cycle and cramp smartly!
In the period calendar, you can view your estimated period, fertile which has high percentage of pregnancy, and ovulation, all in one-step! In the calendar history list, you can view all your past period cycle in one-step.

** Take care of your fertile and ovulation meticulously!
You can take care of yourself even better with the calendar which shows fertile, ovulation, and estimated period in a glimpse of eye!

** A widget which allows you to check precious data quickly!
The first period calendar ever! Check the important info (estimated period, ovulation, and percentage of pregnancy) more quickly and easily with our widget.

** Percentage of pregnancy calculated scientifically!
Based on egg’s duration of life, 24hrs, and sperms’ duration of life, 3~5 days, we indicate percentage of pregnancy “high” for one day before and after the ovulation, and “moderate” for fertile.

** The day you must be prepared! Prepare it in advance!
To make you not embarrassed on the day! We notify the important dates (estimated period, ovulation/fertile and whenever you want) you in advance with witty message and alarm. We provide the alarm function of contraception pills.

** Keep your precious daily data conveniently!
Keep your data easier than a journal. All your recorded period, intimate days, memo, and automatically calculated ovulation and fertile… and all other data… You only need to sign-up to keep them all!

** Not just your period, but your secret intimate days!
You can record your status and symptoms such as the first day of period and period cramps, whenever you want.
Once, which you can record all your secrets such as intimate days! Don’t worry about others having a look at your diary, with our lock function.

** Simple and stylish design capturing women’s mind!
“The better it looks, the more convenient to use.” We have enhanced usability of calendar, by simple and stylish design. In the period calendar, you can view your estimated period, and ovulation, all in one-step. Just like a pretty planner you want to show off, the calendar design won’t be embarrass you even when you install it!


[We have added special features only available in Once!]

** Charming and interesting “Today’s Tip”, which changes depending on your cycle!
Beauty tips which makes you attractive and charming depending on period cycle, ovulation, and fertile. Useful real-life know-hows, useful diet tips, tips to prevent pregnancy, tips for healthy relationships… we enhance your charm by providing various tips!

** Once events made exclusively for women!
Staring from Once beauty pouch fully packed with sense, and Once doctor which provides exact information on diet and health… We hold various events on beauty, diet, and health, which suits women’s appetite!

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Please be with Once, we are doing our best to bring you the best service :D
Developer: Malang Studio (http://malangstudio.com/)

* You can get faster response for questions regarding Once if you write to [email protected]!


This service includes In-app Purchase items, and a separate fee will be charged for purchase.

- Terms of Service : https://bit.ly/38zBlvj
- Privacy Policy : https://bit.ly/3iqaZ3g

Contact
Tel. [email protected] / +827050386396
Address. 11th floor, 508, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea
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# Term Store county Place Priority
1 once app 16 ⭐️⭐️⭐️⭐️
2 period tracker: pms & ovulation calendar 20 ⭐️⭐️
3 period tracker - period, pms & ovulation calendar 20 ⭐️⭐️
4 calculator widget 20 ⭐️⭐️⭐️⭐️
# App Common words
1 Life - Period Tracker Calendar 16
2 Period Diary Ovulation Tracker 16
3 Period Tracker - Menstrual & Ovulation Calendar 16
4 Period Tracker - Eve 16
5 Period Tracker: Monthly Cycles 16
6 My Calendar - Period Tracker 16
7 Ovia: Fertility, Cycle, Health 16
8 Only for women free - Period tracker calendar lite 16
9 Period Tracker with Mood, Fertility & Birth Control Pill Diary with Reminder 15
10 Spot On Period Tracker 15
11 Aunt Flo Period Tracker 14
12 LADYTIMER Period Calendar 14
13 Period Tracker ‎ 13
14 Clue Period Tracker & Calendar 12
15 Cycles: Period & Cycle Tracker 12
16 DayM — Period Tracker and Ovulation Calendar 11
17 Tracker - Ovulation Calendar 11
18 Period Tracker Period Calendar 10
19 Flo Period & Pregnancy Tracker 10
20 Peri: Period Tracker & Calendar 8
21 Period Tracker by PinkBird 8
22 Wonderful Widgets 6
23 How Many Days Until - Days Counter for Countdown to Date and Life Events 6
24 Calculator Widget for Notification Center 6
25 Tipping Widget Pro 6
26 Weather Widget 6
27 Calculator Widget Pro 6
28 Pastel Calculator FREE - Cute Calculator Themes Design with Double Calculator Note Browser and Widget 6
29 TV Widget + 6
30 Currency' Converter 6
31 Pragnancy Calculator Widget 6
32 The Woodshop Widget 6
33 Countdown to an Event – Day Calculator to Remind Days of Our Lives 6
34 Cruncher - Watch Calculator 6
35 Wdgts 6
36 Widget Kit - Tools and Games for your Notification Center 6
37 World Clock Time Widget 6
38 Period Tracker App - Enria 4
39 Pandora Drive Pro 4
40 Cycle Aid – Period Tracker & Romantic Ideas for Men 4
41 Widget Pro: Add to Home Screen 4
42 Woman Cycles 4
43 Glow: AI Ovulation Tracker App 4
44 Calc: Calculator + Widget + Watch App 4
45 Tiply - Tip Calculator + Widget 3
46 2 Things at Once 2
47 Ace Stunt Pilot Air Patrol - Fly Once and Retry Airplane Game 2
48 LivePerson Automotive 2
49 Once Upon a Tower 2
50 Pop Star - Once you pop, you can't stop! 2
Available in countries
Country Price
Canada free
China free
France free
Germany free
Italy free
Netherlands free
Portugal free
Spain free
Poland free
UK free
India free
Japan free
Korea, Republic Of free
Poland free
Russia free
Turkey free
USA free
Korea, Republic Of free
Ukraine free
Available for devices
iPhone4, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX, iPad75, iPad76, iPhoneXS, iPhoneXSMax, iPhoneXR, iPad812, iPad834, iPad856, iPad878, iPadMini5, iPadMini5Cellular, iPadAir3, iPadAir3Cellular, iPodTouchSeventhGen, iPhone11, iPhone11Pro, iPadSeventhGen, iPadSeventhGenCellular, iPhone11ProMax, iPhoneSESecondGen, iPadProSecondGen, iPadProSecondGenCellular, iPadProFourthGen, iPadProFourthGenCellular,
I love this app

This is the most helpful app ever

Back up? Yes! Perfect!

Easy to use and back up autometically. These two make this app the best. One thing I suggest to this app is show symptom icons on calendar so easy to find symptoms instead touch dates to see. If theres more symptom icons it will be awesome! If I need to make in-app purchase, I will definitely spend my money

使いやすい

とてもシンプルでデザインも良く使いやすいです

使いやすい、シンプル、通知が指定できてありがたい

デザインはシンプルで今のところは生理アプリによくある邪魔な広告やコラム機能も無いので、やっと求めていた生理アプリを見つけられたような気がします。ただ、自分が月経過多ぎみなので、生理期間は30日以上でも入力できるようになったらありがたいです。生理周期の計算などの理由で難しいのかもしれませんが。とりあえずこのまま広告表示や不要な機能は付けないまま提供して頂けたら嬉しいです。

When was your last period?

Every time Im at the docs office they ask this - and I know the answer with this app. You can also track symptoms and see where they coincide with your cycle. I also like to be able to track when Ive been intimate - and when not to be intimate (while ovulating) to be super safe.

Reliable App

Its very easy to use and its simple unlike the other apps that is quite complicated.

I love this app!!!

Its cute and kinda gives off a Korean feel (which I love)!!! I love this app and its on almost all of my devices.

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