Comparison

9MonthsWonder vs LadyOne

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

Head to head
About

9MonthsWonder

Features
Read full description

9MonthsWonder — Your Personal Pregnancy Companion The app will help you track your baby's development, get important recommendations, and record key moments of your pregnancy. MAIN FEATURES: Accurate Pregnancy Calendar • Calculate your estimated due date (EDD) • Track current week and trimester • Visual progress of entire pregnancy Baby's Development by Weeks • Baby's size compared to fruits and vegetables • Detailed development description for each week • Realistic parameters: fetal height and weight Personalized Recommendations • Nutrition advice for each trimester • Medical examinations by timeline • Physical activity and lifestyle • Psychological support Daily Tracker • Weight control • Symptoms and well-being tracking • Personal notes Knowledge Base (30+ Questions) • Answers to the most important questions • Nutrition and lifestyle • Examinations and ultrasounds • Preparing for childbirth Notifications • Reminders about the start of a new week • Current information about baby's development Bilingual App • Russian and English languages • Automatic system language detection Reliable Data Storage • All data saved locally • Privacy guaranteed STATISTICS AND INFORMATION: • 40 weeks of detailed information • 40 unique baby size comparisons • 30+ answers to frequently asked questions • Individual recommendations for each week The app is created with care for expectant mothers and contains only verified information. Start your journey to motherhood with 9MonthsWonder!

About

LadyOne

A private companion for tracking your menstrual cycle, fertility, and pregnancy. It offers personalized predictions and optional faith-based guidance, all stored securely on your device with no ads or trackers.

Highlights
  • Period and fertility tracking
  • Pregnancy week-by-week monitoring
  • Optional faith companion
  • Private, on-device data storage
  • iCloud sync
  • Multi-language support
Features
Read full description

LadyOne is a gentle, private companion for your cycle, your pregnancy, and everything in between — built to stay entirely on your own device. Your body, your data, your peace of mind. CYCLE & FERTILITY Track your period, understand your phases, and see what's ahead. Predictions learn your own rhythm — never a stranger's. PREGNANCY, WEEK BY WEEK Follow your baby's growth, log how you feel, and know what's normal — and, just as clearly, what's worth a call. FAITH, IF YOU WANT IT An optional worship companion that understands your cycle and its rulings — entirely yours to turn on, or leave off. PRIVATE BY DESIGN • Everything you log lives on your iPhone — not on our servers, because we don't have any. • If you use more than one device, Apple's private iCloud sync carries it between them. We never see it. • No ads, no trackers, nothing sold. There is no third party in the room. • Erase everything, anytime — from the app, your iCloud, and Apple Health, in a single choice. SPEAKS YOUR LANGUAGE Available in English, Arabic, Persian, Chinese, Hindi, Russian, Spanish, Portuguese, Indonesian, French, Turkish and Urdu — with full right-to-left support, so every language feels native. No account required. Private by design. LADYONE PLUS LadyOne is free to use, and your cycle insights stay free. LadyOne Plus adds the pregnancy weeks with their trends, plus full doctor and prenatal reports as PDF — as a monthly or yearly subscription. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://ladyone.app/privacy Terms of Use: https://ladyone.app/terms

Screenshots

9MonthsWonder4 screens
LadyOne4 screens

Verdict

The call

The clearest difference is in-app purchases: 9MonthsWonder at none against LadyOne's 2. 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. LadyOne sells 2 in-app purchases, starting at $7.99 per month. 9MonthsWonder asks for nothing beyond the download.

UpkeepUpdate frequency

9MonthsWonder ships an update every 9 days, LadyOne every 10 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 8 level
9MonthsWonder versus LadyOne: the parameters behind the verdict, then further details
Parameter9MonthsWonderLadyOne
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 9 days — betterEvery 10 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad — betteriPhone
Requires iOS17.617.0 — better
Further details — not scored
Size13 MB28 MB
Age rating17+12+
DeveloperSergei AntropovOrbit Next Labs L.L.C-FZ

In-app purchases

None

9MonthsWonder

No in-app purchases

2 purchases

LadyOne

Subscriptions2
  • Monthly$7.991 Month
  • Yearly$39.991 Year

Questions

Is 9MonthsWonder free?
9MonthsWonder is free to download, with no in-app purchases.
Is LadyOne free?
LadyOne is free to download, with in-app purchases available.
Do 9MonthsWonder or LadyOne have ads?
Neither 9MonthsWonder nor LadyOne shows ads.
Which is updated more often, 9MonthsWonder or LadyOne?
9MonthsWonder ships an update every 9 days, and LadyOne every 10 days. Most recently, 9MonthsWonder was updated on October 25, 2026 and LadyOne on October 29, 2026.

Other comparisons