The Love Calculator API blends technology and emotion, offering playful insights into compatibility, fostering amusement, and sparking conversation.

The Love Match API offers engaging compatibility insights, enhancing user interaction in apps, websites, and social media platforms.

Validates whether an email address is temporary or disposable, returning true or false to facilitate automated filtering.

The Love Connection API offers engaging compatibility insights, enhancing user interaction in apps, websites, and social media platforms.

Structured data for 35 digital nomad and remote-work visa programs worldwide. Endpoints cover listing and filtering programs, eligibility matching by nationality and income, scored recommendations, residency pathways, tax detail and estimates, comparison, dataset statistics, and a changelog. All data is curated from government immigration sources and updated quarterly. No database, no runtime scraping — fast and deterministic responses.

Accepts a structured description of a working relationship and returns a jurisdiction-specific misclassification risk score (0-100), risk level, factor-by-factor analysis, and plain-English reasoning across 20 jurisdictions. Also includes remediation guidance, safe-harbor checklists, financial exposure estimation, cross-jurisdiction comparison, and portfolio-level bulk scoring. No database, no runtime scraping — fast and deterministic responses.

Email Existence API swiftly verifies email addresses, ensuring accuracy for communication channels. Real-time, secure, and seamlessly integrated for optimal data quality.

The Romantic Probability API enriches user engagement across apps, websites, and social media platforms by providing captivating compatibility insights.

Validate email authenticity and enrich organizational details to enhance B2B targeting and minimize bounce rates with Advanced Email Validator and Enricher API.

The Email Exist Checker API quickly verifies email addresses, helping users ensure data accuracy and streamline communication processes.

The Email Reliability API ensures the accuracy and legitimacy of email addresses, offering a reliable solution for verifying and maintaining data integrity.

Pregnancy due date and gestational age API. EDD from LMP, conception, IVF transfer day, or ultrasound CRL. ACOG redating rules, trimester, and term milestones. Deterministic ISO 8601 dates.

Ensure your calendar meets RFC 5545 standards with our compliant RFC 5545 Compliant RRULE API for accurate scheduling.

Streamline your calendar's scheduling process with our Calendar Scheduling Occurrences Calendar Scheduling Occurrences RRULE API.

Applies ACOG Committee Opinion 700 Table 1 to decide whether an ultrasound overrides LMP dating.

Ovulation estimate and 6-day fertile window from cycle length. Not contraceptive guidance.

Score one working relationship across up to 5 jurisdictions at once, or compare jurisdictions' legal tests and penalty exposure side by side, to find the safest place to engage a role.

Score IR35 and off-payroll working risk for UK engagements, alongside 19 other jurisdictions' classification tests, with factor-by-factor reasoning.

Bulk-score up to 100 existing contractor relationships in one call, with per-worker risk levels and aggregate statistics to flag your highest-risk workers first.

Score misclassification risk (0–100) across 20 jurisdictions from a structured description of a working relationship, with the legal test applied and factor-by-factor reasoning.

Score misclassification risk before placing a worker in any of 20 jurisdictions, with financial exposure estimates and remediation guidance for EOR and payroll teams.

Due date from last menstrual period using Naegele's rule, with 21-45 day cycle length correction.

Trimester boundaries, 24w0d viability, and four preterm and four term classes with their dates.

Dating from BPD, HC, AC and FL measurements in millimetres, using Hadlock 1984 equations.

Conception date from a last menstrual period or from a known due date, as ISO 8601 dates