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KSeF Guard vs Sorgera
Both validate KSeF invoices. Here's how they compare on rule depth, privacy, and reporting — based on publicly available information.
| Feature | KSeF Guard | Sorgera |
|---|---|---|
| Privacy & Security | ||
| Data privacy | Validation runs offline — invoice data stays local | Cloud upload required |
| Offline / air-gapped | Yes — validation runs offline. License, payments, updates may connect. | No — cloud required |
| No telemetry | Verified — no analytics, no tracking | Cookies + analytics |
| Validation Depth | ||
| Catches beyond KSeF | 107 rules beyond KSeF (55 legal)↗ | — |
| Validation rules beyond XSD | 128 with source-backed evidence↗ | XSD-focused, no citations |
| KSeF API conformance tested | 256 invoices, 0 false negatives (conformance v9)↗ | — |
| Legal source provenance | SHA-256 verified quotes from VAT Act↗ | — |
| XSD schema validation | Full libxml2 | Yes |
| Smart fix hints | Bilingual problem + fix per rule | Line-level highlighting |
| Workflow & Reporting | ||
| Batch processing | 5,000 files/day (Standard), unlimited (Pro) | Up to 50 files (paid) |
| PDF audit report | White-label PDF with legal chain | No |
| Export formats | TXT, CSV, JSON, PDF | None |
| Rule configuration | Per-rule enable/disable, YAML profiles | No |
| CLI for CI/CD | Exit codes 0–130, JSON output | No |
| Bilingual interface | Polish + English | English only |
| Price & Access | ||
| Entry price | Free (10 files/day) | Free (10/day), €15/1k credits |
| Unlimited usage | €89/month (Pro) | Pay-per-use credits |
| Platform | Windows desktop + CLI (Linux CLI) | Web browser |
| Open source | No — SHA-256 verified rule provenance | No |
| Product status | Available | Released |
✓ yes · ✗ no · — unknown or not tested
Conformance v9 methodology: 256 test invoices submitted to KSeF test API 2.3.0 on 2026-05-25. Results: 0 false negatives, 98 false-positive fixtures (94 active rules, plus 4 from inactive rules). Including 12 additional rules verified by static analysis and batch testing, KSeF Guard validated 107 rules beyond KSeF API, of which 55 are legal requirements.
Comparison based on publicly available information as of May 2026. We strive for accuracy — contact [email protected] if any claim needs correction.