Comparison

Ovulation Fertility Tracker vs DdongDal

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

Head to head
About

Ovulation Fertility Tracker

This smart and private tool helps track menstrual cycles, predict ovulation, and support fertility goals with AI-powered insights. It offers intuitive logging of symptoms and moods, with custom reminders for key events. Designed for all cycle types, it provides reliable, data-driven guidance for reproductive health awareness.

Highlights
  • AI-based ovulation and fertile window predictions
  • Period tracking with cycle start and end dates
  • Symptom, mood, and discharge logging
  • Pregnancy planning support
  • Customizable event reminders
  • Private and secure local data storage
Features
Read full description

Ovulation Fertility Tracker is a smart, private, and easy-to-use tool designed to help you track your menstrual cycle, understand your ovulation patterns, and support your fertility goals. With advanced AI-powered predictions and personalized insights, it adapts to your unique cycle—whether it’s regular or irregular. Built for women at every life stage, the app offers intuitive tracking, accurate ovulation forecasts, and discreet health management in one place. Whether you're trying to conceive, monitoring symptoms, or simply learning more about your body, this app supports you with reliable, data-driven guidance. Core Features: - Period tracking with cycle start and end dates - AI-based ovulation and fertile window predictions - Symptom, mood, and discharge logging - Pregnancy planning support - Custom reminders for period, ovulation, and other key events - Private and secure use with no login required - Designed for all cycle types, including irregular periods You can use the app to keep a detailed record of your health, identify patterns, and feel confident in your cycle awareness. All of your data is stored locally on your device and is never shared without your consent. This app is suitable for menstruating individuals of all ages—from first period to perimenopause—and provides a science-based, non-intrusive way to stay informed about your reproductive health. Disclaimer: This app is intended for informational purposes only and does not provide medical advice. Always consult a qualified healthcare provider for any medical concerns. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

DdongDal

Features
Read full description

DdongDal makes poop logging take just 3 seconds! A gut-health diary that organizes your bowel patterns with a calendar, graphs, and tables. Keep logging and find your body's rhythm! Perfect for you if: ■ You have recurring constipation or diarrhea and want to see your pattern ■ You want to know how often and when you go ■ You're curious how food (spicy dishes, coffee, probiotics...) affects your poop ■ Your doctor asked you to keep a bowel diary ■ You want this month's bowel health at a glance on one calendar Features: ■ Pick a shape and you're done — log in 3 seconds, multiple times a day ■ 8 poop shapes based on the Bristol stool scale (failed attempts count too) ■ Calendar color-coded by constipation / normal / diarrhea ■ Line graphs of state & count (from 1 week up to 1 year) ■ Time-of-day distribution (dawn/morning/day/night) and streaks ■ 12 free emotion stickers (food & workout packs via in-app purchase) ■ Add photos, condition tags, and memos to each day ■ Dark mode, PIN lock, reminders, backup/restore ■ Cozy handwriting fonts and a paper-textured design All records stay on your phone only.

Screenshots

Ovulation Fertility Tracker4 screens
DdongDal4 screens

Verdict

The call

The clearest difference is in-app purchases: DdongDal at none against Ovulation Fertility Tracker's 3. DdongDal also leads on iOS requirement (13.0 vs 15.0.0). Ovulation Fertility Tracker's advantage is ads (none vs shown). On price, update cadence 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. Ovulation Fertility Tracker sells 3 in-app purchases, starting at $3.99 per 7 days. DdongDal asks for nothing beyond the download.

UpkeepUpdate frequency

Ovulation Fertility Tracker ships an update every 5 weeks, DdongDal monthly. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Ovulation Fertility Tracker versus DdongDal: the parameters behind the verdict, then further details
ParameterOvulation Fertility TrackerDdongDal
PriceFreeFree
Rating4.7 (6 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings6 — better—
Update frequencyEvery 5 weeksMonthly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0.013.0 — better
Further details — not scored
Size41 MB43 MB
Age rating12+4+
DeveloperICartaHyeIn Kim

In-app purchases

3 purchases

Ovulation Fertility Tracker

Subscriptions3
  • Ava AI Weekly3 Days trial$3.997 Days
  • Ava Monthly$7.991 Month
  • Ava Annual$69.991 Year
None

DdongDal

No in-app purchases

Questions

Is Ovulation Fertility Tracker free?
Ovulation Fertility Tracker is free to download, with in-app purchases available.
Is DdongDal free?
DdongDal is free to download, with no in-app purchases.
Do Ovulation Fertility Tracker or DdongDal have ads?
DdongDal shows ads; Ovulation Fertility Tracker does not.
Which is updated more often, Ovulation Fertility Tracker or DdongDal?
Ovulation Fertility Tracker ships an update every 5 weeks, and DdongDal monthly. Most recently, Ovulation Fertility Tracker was updated on October 2, 2026 and DdongDal on October 11, 2026.

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