--- title: "DrObsCalc - Reviews, Revenue and Downloads in Singapore | Apple App Store" description: "DrObsCalc is a clinical gestational age calculator built for real clinical practice. Establish gestation instantly from last menstrual period (LMP), estimated date of delivery (EDD), or known gestati" --- # DrObsCalc — Singapore > Intelligent GA & EDD Workflow ![DrObsCalc App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/f9/5b/0a/f95b0a86-0572-f980-26f3-c1bf5cdbde6e/DrObsCalc-0-0-1x_U007epad-0-1-sRGB-85-220.png/434x0w.png) **Developer:** [Eng Loy Tan](https://apptail.io/developer/eng-loy-tan-iPIeGb) **Category:** Medical **Rating:** 5.0/5 (3 ratings) **Price:** Free **Bundle ID:** org.elcreations.DrObsCalc **Store:** Apple App Store **Country:** Singapore **Version:** 1.5.0 (released 2026-03-30) **Original Release:** 2026-02-27 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/sg/app/app/id6759258402) **AppTail Page:** [https://apptail.io/app/drobscalc-GcHy/singapore](https://apptail.io/app/drobscalc-GcHy/singapore) ## DrObsCalc Description DrObsCalc is a clinical gestational age calculator built for real clinical practice. Establish gestation instantly from last menstrual period (LMP), estimated date of delivery (EDD), or known gestational age (GA) on a known date. The calculator adapts automatically, with no manual mode switching required. Designed for obstetricians by an obstetrician, DrObsCalc supports fast, accurate workflow at the point of care. Key Features: • Intelligent input logic for LMP, EDD, or GA-based entry • Automatic recalculation across related values • Fast 6- or 8-digit numeric date entry • Automatic regional date format recognition • Clear trimester and milestone overview Clinical Milestones Pro (One-Time Purchase): • Additional clinical window presets • Create and customise your own clinical window presets • Custom Appointment Planning Weeks • More tailored follow-up planning DrObsCalc performs date calculations and clinical planning support only. It does not provide diagnostic or treatment recommendations. ## DrObsCalc Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/83/bc/c6/83bcc6e3-fbc5-9adc-e22b-50deec0c5252/20260316_DrObsCalc_App_Store_Review_Screenshots-1.png/1284x2778.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ee/b3/d3/eeb3d3bd-1213-cccd-33a3-74dad5511e27/20260316_DrObsCalc_App_Store_Review_Screenshots-2.png/1284x2778.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3c/c3/7b/3cc37b1b-24e4-47c8-f662-dcfa020fc9f6/20260316_DrObsCalc_App_Store_Review_Screenshots-3.png/1284x2778.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/14/48/db/1448dba9-ace7-003d-ba11-5303ef8a9ece/20260316_DrObsCalc_App_Store_Review_Screenshots-4.png/1284x2778.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e8/6b/a3/e86ba38a-072e-b7a3-b333-841aed24c27a/20260316_DrObsCalc_App_Store_Review_Screenshots-5.png/1284x2778.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/1c/c8/87/1cc8879b-f4e4-28e9-0cc6-9099c3ee3495/20260316_DrObsCalc_App_Store_Review_Screenshots-6.png/1284x2778.png) ## DrObsCalc Rating Breakdown in Singapore - 5 stars: 3 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## DrObsCalc Reviews in Singapore ### ***** "Amazing app" Super user friendly! All Obstetrician should use it! -- ICCGEH, 2026-03-10 [View all DrObsCalc reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## DrObsCalc In-App Purchases | Item | Price | |------|-------| | Clinical Milestones Pro | 9.98 S$ | ## DrObsCalc Available In - [Singapore](https://apptail.io/app/drobscalc-GcHy/singapore) - [India](https://apptail.io/app/drobscalc-GcHy/india) - [Belgium](https://apptail.io/app/drobscalc-GcHy/belgium) - [Brazil](https://apptail.io/app/drobscalc-GcHy/brazil) - [Chile](https://apptail.io/app/drobscalc-GcHy/chile) - [China](https://apptail.io/app/drobscalc-GcHy/china) - [Germany](https://apptail.io/app/drobscalc-GcHy/germany) - [Ghana](https://apptail.io/app/drobscalc-GcHy/ghana) - [Hong Kong SAR China](https://apptail.io/app/drobscalc-GcHy/hong-kong) - [Hungary](https://apptail.io/app/drobscalc-GcHy/hungary) - [Indonesia](https://apptail.io/app/drobscalc-GcHy/indonesia) - [Jamaica](https://apptail.io/app/drobscalc-GcHy/jamaica) - [Kuwait](https://apptail.io/app/drobscalc-GcHy/kuwait) - [Sri Lanka](https://apptail.io/app/drobscalc-GcHy/sri-lanka) - [Latvia](https://apptail.io/app/drobscalc-GcHy/latvia) - [North Macedonia](https://apptail.io/app/drobscalc-GcHy/north-macedonia) - [Malta](https://apptail.io/app/drobscalc-GcHy/malta) - [Nigeria](https://apptail.io/app/drobscalc-GcHy/nigeria) - [Netherlands](https://apptail.io/app/drobscalc-GcHy/netherlands) - [Romania](https://apptail.io/app/drobscalc-GcHy/romania) - [Saudi Arabia](https://apptail.io/app/drobscalc-GcHy/saudi-arabia) - [Slovenia](https://apptail.io/app/drobscalc-GcHy/slovenia) - [Senegal](https://apptail.io/app/drobscalc-GcHy/senegal) - [Thailand](https://apptail.io/app/drobscalc-GcHy/thailand) - [Uganda](https://apptail.io/app/drobscalc-GcHy/uganda) - [Armenia](https://apptail.io/app/drobscalc-GcHy/armenia) - [United States](https://apptail.io/app/drobscalc-GcHy/united-states) - [Azerbaijan](https://apptail.io/app/drobscalc-GcHy/azerbaijan) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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