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VAT Engine vs Sahha

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

VAT Engine compared with Sahha
DetailVAT Engine logo VAT EngineSahha logo Sahha
What it doesEU VAT calculation and compliance API Health data API for phones and 800+ wearable devices
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Free trial
PricingFree alpha access with no payment method required. Free 30-day trial with all products unlocked. Starter: $299/month (billed annually) or $399/month (monthly), includes 1,000 users then $0.40/user. Pro: $1,499/month (billed annually) or $1,999/month (monthly), includes 10,000 users then $0.20/user. Enterprise: custom pricing with volume discounts. A
Key features
  • EU VAT calculation with official TEDB rates
  • 37 merchant-friendly tax classes
  • SME threshold lookup for all 27 EU member states
  • Source profiles for multi-store management
  • OSS/IOSS reporting workflows
  • Transaction tracking and export
  • Scoped API keys and 2FA security
  • Collects from 800+ devices across 165 integrations including Apple Health, Health Connect, Garmin, Fitbit, Oura, WHOOP, Samsung Health
  • Works without wearables using smartphone as passive sensor
  • 500+ standardized signals including biomarkers, scores, archetypes, tags, and insights
  • Automatic multi-device deduplication and reconciliation
  • Up to 30 days of historical data on first connect
  • Real-time API and webhook delivery
  • Health scores: Activity, Sleep, Readiness, Wellbeing, Mental Wellbeing
  • 100+ biomarkers covering sleep, activity, vitals, mental signals, nutrition
  • 100+ archetypes for user segmentation and personalization
  • HIPAA, GDPR, SOC 2 Type II compliance with DPA and BAA support
What makes it different
  • Designed for EU VAT depth with TEDB-backed rates and curated merchant classes
  • Time-aware calculations with recorded rate windows for audit review
  • Audit-friendly compliance flow with transaction evidence and source tracking
  • Includes SME thresholds for all 27 member states
  • Roadmap includes e-commerce platform integrations
  • Works without wearables - smartphone reach 82-97% vs wearables 13-46%
  • Automatic 30-day backfill on connect eliminates warmup period for personalization
  • One deduplicated data schema reconciles 800+ devices automatically
  • Research-backed health scores built on peer-reviewed science
  • Integration in days with sandbox testing, demo app, and developer tools
Community votes00
DR (Domain Rating by Ahrefs)8 −1 (down) since last check35 +1 (up) since last check
Trust Flow (Majestic)199
Citation Flow (Majestic)2533
Referring domains (Majestic)75211

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