Comparison

Obstetric Tools vs OB Wheel+

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

Head to head
About

Obstetric Tools

This clinical toolkit provides obstetricians and midwives with a precise, fast, and comprehensive pregnancy wheel and calculator. It offers evidence-based results for optimizing patient care, even offline, and includes various essential medical tests and scales.

Highlights
  • Advanced Gestogram (Pregnancy Wheel)
  • Estimated Due Date (EDD) & Gestational Age (GA) calculation
  • Estimated Fetal Weight (EFW) calculator
  • Maternal BMI & Weight Gain tracker
  • Bishop Score, Apgar Score, and other clinical scales
  • 100% Offline Functionality
  • Evidence-based clinical information
Features
Read full description

Keep obstetric and neonatal reference tools together, from pregnancy dating to newborn assessment. Obstetric Tools is designed for midwives, obstetricians and other healthcare professionals. PREGNANCY AND MATERNAL CARE Use the pregnancy wheel to calculate gestational age and estimated due date. Explore IVF dating, estimated fetal weight with Hadlock IV, BMI and pregnancy weight gain, serial beta-hCG change, amniotic fluid assessment, twin weight discordance, mean arterial pressure and blood loss calculations. NEWBORN CARE AND CLINICAL SCALES Find Apgar, Bishop, Silverman-Andersen, Edinburgh, PUQE-24, LATCH and other reference scales. Calculate corrected age and newborn weight change. Search the tool catalog and open explanations, reference tables and sources from each tool. FREE TOOLS AND OPTIONAL PRO Use the available free tools or choose an individual monthly or annual auto-renewing Pro subscription for all Pro tools and an ad-free experience. The store shows the price and billing period before purchase. Manage or cancel renewal in your store settings. No app account is required. PRIVACY AND CLINICAL USE Clinical calculations run on your device. Technical usage, purchase and diagnostic data are described in the privacy policy; clinical inputs are not included in analytics events. For professional information and education. This app is not a medical device and does not diagnose, prescribe or replace clinical judgement. Check results against the clinical context, original references and your local protocols. Privacy: https://milkynest.com/privacy/ EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OB Wheel+

This medical app offers precise pregnancy calculations for healthcare professionals and expectant parents. It features multiple calculation modes, projected gestational age, and a timeline of key clinical milestones and screenings. Users can also filter milestones by trimester and compare fetal growth with relatable size comparisons.

Highlights
  • Multiple calculation modes (LMP, EDD, IVF, GA)
  • Projected gestational age calculation
  • Clinical milestone timeline
  • Trimester filtering
  • Fetal size comparisons
Features
Read full description

Designed by Andrew Yu, MD, A double board certified OB/GYN and Clinical Informatics. OB Wheel+ is a streamlined and reliable tool for calculating essential pregnancy dates. Whether you are a clinician in a fast-paced environment or an expectant parent tracking milestones, this app provides the accuracy you need with an intuitive, modern interface. Key Features: • Multiple Calculation Modes: Calculate based on Last Menstrual Period (LMP), Known Due Date (EDD), IVF Transfer Date (Day 3 or Day 5), or Gestational Age (GA) from a specific scan date. • Projected GA: Easily determine what the gestational age will be on any future date. • Clinical Milestones: Automatically generates a comprehensive timeline for essential screenings, including NIPT, Anatomy Scan, Glucose testing, and vaccinations including RSV during the appropriate season. • Trimester Filtering: Focus on the milestones that matter right now with easy T1, T2, and T3 filters. • Fetal Size Comparisons: Track baby’s growth with relatable size comparisons. Medical Disclaimer: This app is intended for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read in this application.

Screenshots

Obstetric Tools4 screens
OB Wheel+4 screens

Verdict

The call

The clearest difference is in-app purchases: OB Wheel+ at none against Obstetric Tools's 4. OB Wheel+ also leads on rating (5.0 vs 4.8). Obstetric Tools's advantage is ratings volume (4 vs 1) and device support (3 vs 1). On price and ads 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. Obstetric Tools sells 4 in-app purchases, starting at $1.99 per month. OB Wheel+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OB Wheel+ holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Scorecard6 real differences · 3 level
Obstetric Tools versus OB Wheel+: the parameters behind the verdict, then further details
ParameterObstetric ToolsOB Wheel+
PriceFreeFree
Rating4.8 (4 ratings)5.0 (1 ratings) — better
Number of ratings4 — better1
Update frequencyEvery 3 weeks—
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.6
Further details — not scored
Size69 MB11 MB
Age rating17+17+
DeveloperPedro IniestaAndrew Yu

Customer experience

Obstetric Tools

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

OB Wheel+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Obstetric Tools

Subscriptions4
  • Premium Monthly7 Days trial$1.991 Month
  • Obstetric Tools Pro Monthly$3.991 Month
  • Premium Annual7 Days trial$4.991 Year
Show 1 more
  • Obstetric Tools Pro Annual$24.991 Year
None

OB Wheel+

No in-app purchases

Questions

Is Obstetric Tools free?
Obstetric Tools is free to download, with in-app purchases available.
Is OB Wheel+ free?
OB Wheel+ is free to download, with no in-app purchases.
Which has better reviews, Obstetric Tools or OB Wheel+?
OB Wheel+ is rated higher. Obstetric Tools averages 4.8 out of 5 from 4 ratings, while OB Wheel+ averages 5.0 from 1 ratings.
Do Obstetric Tools or OB Wheel+ have ads?
Both Obstetric Tools and OB Wheel+ show ads.

Other comparisons