OB Datum: Pregnancy Dating

iOS app by VLR Software. Medical · VLR Software

Store rating
0 / 5
Store rating count
0
Download price
Free to download
In-app purchases
Unknown
Version
1.0
Listing last refreshed
2026-09-15

View the original store listing

Store description excerpt

Calculate and compare pregnancy dates with a clear explanation of every result. OB Datum is a clinician-first pregnancy-dating workspace for iPhone and iPad. It performs deterministic calendar arithmetic and shows the source, formula, equivalent dates, and calculation-engine version for review. CALCULATE FROM • First day of the last menstrual period, with optional regular-cycle adjustment • Documented conception or ovulation date • An established estimated due date Lifetime Pro adds calculations from gestational age documented on a known date and from an IVF embryo-transfer date and embryo age. LIFETIME PRO One purchase—with no subscription or advertising—unlocks known-GA and IVF/ART dating, read-only Health import, full dating reconciliation, unlimited anonymous saved cases, formatted sharing, Calendar export, and custom timeline milestones. In Reconcile, keep an established EDD locked while comparing the dates implied by LMP, ultrasound gestational age, and IVF/ART. OB Datum reports signed calendar-day differences and never changes or averages dates automatically. Guideline-based redating thresholds remain unavailable until the app's versioned clinical profile completes independent review. EXPLORE THE TIMELINE Calculate gestational age on a selected date, find the date corresponding to a gestational age, review descriptive milestones, and explore an interactive pregnancy wheel with accessible day and exact-date controls. PRIVATE BY DESIGN • No advertising or tracking • No patient names, record numbers, contact details, or notes • Anonymous saved calculations stay protected on your device • Optional Pro read-only import of the latest menstrual-cycle start from Health • Pro Calendar export includes only the EDD and no patient identifiers • The widget opens OB Datum without displaying pregnancy or case data OB Datum also provides a privacy-safe due-date action for Shortcuts, shareable calculation summaries, dark mode, Dynamic Type, VoiceOver support, and Reduce Motion support. OB Datum supports date arithmetic and clinical review. It does not diagnose, prescribe, select a delivery date, or replace professional judgment. Independently verify every input, result, and source before clinical use.

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