OB Wheel vs IGCalcPT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OB Wheel
This app assists expectant mothers and healthcare professionals in tracking pregnancy with accurate due date calculations and weekly fetal development updates. It offers customizable features, health tips, and tools for clinicians to support patient care throughout the journey to delivery.
- Accurate due date calculation
- Weekly fetal development tracker
- Customizable reminders and tracking
- Health tips and resources
- Tools for healthcare professionals
- Symptom and feeling logging
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Promotional Text for OB Wheel App "Introducing the OB Wheel App – Your Personalized Pregnancy Journey Companion! Navigating through pregnancy just got easier and more reliable with the OB Wheel App, specially designed for expectant mothers and healthcare professionals. Say goodbye to guesswork and hello to precision with our user-friendly app that offers accurate, at-a-glance pregnancy tracking. Key Features: Accurate Due Date Calculation: Simply enter your last menstrual period, and let our app do the rest. Get precise due dates and important milestones at your fingertips. Fetal Development Tracker: Watch your baby's growth week-by-week. Learn about developmental stages, size comparisons, and exciting changes as your pregnancy progresses. Customizable Experience: Every pregnancy is unique. Customize the app to suit your journey – set reminders, track appointments, and record your feelings and symptoms. Health Tips & Resources: Stay informed with valuable insights, nutritional advice, and tips for maintaining a healthy pregnancy from conception to delivery. Professional Tools for Clinicians: A handy resource for obstetricians and midwives, offering gestational age calculations, weight and length estimations, and more to support patient care. Why Choose OB Wheel App? Simplicity and Ease of Use: Designed with you in mind, our app is intuitive and straightforward, making pregnancy tracking stress-free. Trusted and Reliable: Developed in collaboration with healthcare professionals, ensuring accuracy and up-to-date information. Stay Connected: Share milestones with loved ones and keep your healthcare team in the loop with easy sharing options. Embrace the beauty of pregnancy and enjoy peace of mind with the OB Wheel App. Whether you're a first-time mom or a seasoned pro, our app will be by your side every step of the way. Download now and start your extraordinary journey to motherhood with confidence and joy! Privacy policy: https://odindevstudio.wordpress.com/privacy-policy Terms of use and Terms of Subscription https://odindevstudio.wordpress.com/terms
IGCalcPT
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IGCalcPt is a precise gestational age and fetal weight percentile calculator for healthcare professionals, built around growth charts specific to the Portuguese population and recommended by the Portuguese Society of Maternal-Fetal Medicine. KEY FEATURES Accurate gestational age calculation: • Multiple methods: LMP, conception date, embryo transfer (day 2–5), estimated due date • Automatic conversion between dates and gestational ages • Interactive calculator for any date • Before a patient's dating is changed, shows today's GA by the stored dating and by the new one • Correct handling of time zones and leap years Portuguese fetal percentiles: • Growth charts validated for the Portuguese population • Percentiles by sex (male, female, both), with one decimal below P10 and above P90 • Twins and triplets: each fetus with its own reference table, and weight discordance flagged from 20% • Interactive fetal growth charts with zoom • Visual comparison with previous measurements Patient management: • Profiles with clinical notes • Full measurement and percentile history; saved weights can be corrected • Saved weights follow a corrected dating and the fetal sex • Close a pregnancy and start the next one on the same record • Undo after deleting a patient, a weight or a pregnancy • Quick search by name or ID • JSON backup and restore • PDF report with chart and measurements, dated, with the GA on the day Specialised calculators: • CRL (crown-rump length): GA at 5–14 weeks (Robinson & Fleming) • Fetal biometry: estimated weight by Hadlock (BPD, HC, AC, FL) • Automatic integration between calculators Accessibility and privacy: • Dark mode and a dedicated high-visibility mode • Interface in Portuguese, English and French • Fully offline: data are stored on the device and are not sent to the developer • The device's own backup may include the data • No ads, no tracking, no data collection SCIENTIFIC BASIS Based on the doctoral research of Dr. Ricardo Santos using Portuguese population data: Sousa-Santos RF, Miguelote RF, Cruz-Correia RJ, Santos CC, Bernardes JFMAL. Development of a birthweight standard and comparison with currently used standards. Eur J Obstet Gynecol Reprod Biol 2016;206:184-193. WHO IS IT FOR Obstetricians, gynaecologists, maternal-fetal medicine specialists, sonographers, specialised nurses and residents. MEDICAL DISCLAIMER This application is intended for qualified healthcare professionals. Calculators and percentiles are decision-support tools and do not replace clinical judgement.
Screenshots
Verdict
The clearest difference is in-app purchases: IGCalcPT at none against OB Wheel's 2. OB Wheel's advantage is update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement 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
Both are free to download. OB Wheel sells 2 one-off in-app purchases. IGCalcPT asks for nothing beyond the download.
OB Wheel ships an update every 4 days, IGCalcPT every 2 months. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.
| Parameter | OB Wheel | IGCalcPT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (10 ratings) — better | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 4 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 28 MB | 31 MB |
| Age rating | 17+ | 17+ |
| Developer | Berkay Gurcesme | OBGYNART - OBSTETRICIA, GINECOLOGIA E MEDICINA DA REPRODUCAO, LDA |
In-app purchases
OB Wheel
- Ob Wheel lifetime ad-free$3.99
- Unlimited Ad-free Ob wheel$9.99
IGCalcPT
No in-app purchases









