Products We've Built
Beyond consulting — we build production AI products used by real businesses across Poland and Europe.
LinguaOS
The AI co-teacher that saves English teachers 5+ hours a week
LinguaOS is the AI operating system built for English teachers — replacing scattered Google Docs, PDFs, and spreadsheets with one smart workspace. Generate lesson plans in 10 seconds, write student feedback automatically, run live exams with AI grading, and track every student's CEFR progress from A1 to C2. EU-hosted and GDPR-compliant.
- Lesson plans in 10 seconds — personalised to every student's CEFR level and goals
- AI feedback writer — detailed, constructive feedback at one click
- Live exam portal — 5 question types, auto-grading, AI essay marking
- Student practice portal — AI conversation sessions with XP progress tracking
- Analytics dashboard — CEFR distribution, inactive alerts, session statistics
- Free forever for up to 5 students — no credit card, live in 5 minutes
5+
hours saved per week per teacher
Pricing
Free
5 students · forever free
€0
Starter
10 students · all AI tools
€14/mo
Solo
25 students · exams + analytics
€39/mo
Pro
60 students · school dashboard
€79/mo
Built for every teaching workflow
AI Teacher Assistant
- One-click lesson plan generation in under 10 seconds
- Automated constructive student feedback
- Ready-to-distribute assignment creation
- AI Q&A with full student context awareness
- Conversation-based practice prompts
- Multiple question types: MC, gap-fill, essay, speaking
Student Management
- Custom student profiles: CEFR level, motivation, exam goals, interests
- Student portal with AI conversation practice
- XP tracking and practice session history
- Personalized content delivery per student
Assessment & Exams
- Drag-and-drop question builder — 5 question types
- Live exam UI with countdown timer and auto-save
- Auto-grading for objective question types
- AI-generated essay feedback using custom rubrics
- CEFR-coded grade book with colour-coded scores
Analytics & Tracking
- 8-week sessions-per-week bar chart
- CEFR level distribution visualization
- Most active students ranking by sessions and practice time
- Automatic alerts for students inactive 14+ days
- Ungraded submission alerts
School Management
- Multi-teacher and multi-class administration
- Director dashboard for school-wide oversight
- Textbook library with assignment tracking
- School-wide assessment coordination
Platform
- Free tier: 5 students, forever — no credit card
- Google Calendar sync (Solo+ plans)
- CEFR A1–C2 coverage across all skills
- EU-hosted infrastructure, GDPR-compliant
- Powered by Claude AI
LinguaOS — Live product
One workspace for every teaching task
Lesson plans and feedback in under 10 seconds
Free forever for up to 5 students
FakturAI
AI-powered KSeF e-invoicing for Polish businesses
FakturAI is Poland's most complete KSeF invoicing platform — covering the full invoicing lifecycle from creation to payment tracking. Create all 7 invoice types, import bank statements, automate recurring invoices, verify suppliers against Biała Lista, and export JPK declarations — all from one bilingual PWA with Claude-powered natural language input.
- All 7 KSeF invoice types — standard, correction, advance, settlement, simplified + more
- AI invoice creation — describe in natural language, Claude parses it instantly
- Offline24 mode — issue invoices without a live KSeF connection
- Bank CSV import — auto-matches transfers from PKO BP, mBank, ING, Santander
- JPK_FA & JPK_V7M XML export + Biała Lista supplier verification
- Multi-user teams with roles, accountant directory, and multi-company (PRO)
< 30s
from description to KSeF submission
Pricing
Solo
20 invoices/month · no credit card
Free
Business
Unlimited invoices · bank import · recurring
49 PLN/mo
Pro
Multi-company · API access · accountant tools
149 PLN/mo
Everything included
KSeF Invoicing
- All 7 invoice types: standard, correction (KOR), advance (ZAL), settlement (ROZ), simplified (UPR)
- Offline24 mode — issue without live KSeF connection, upload within 24h
- Received invoices pulled from KSeF every 4 hours automatically
- Fraud/risk detection — flags new suppliers & transactions >10K PLN
- Clone any invoice as template or create a correction
Payments & Bank
- PENDING / PAID / OVERDUE status on all invoices
- Daily email alerts for overdue invoices
- Bank CSV import: PKO BP, mBank, ING, Santander
- Auto-matches bank transfers to invoices and marks them PAID
Automation
- Recurring invoices — weekly, monthly, quarterly templates auto-generate DRAFTs
- AI invoice creation — describe in natural language, Claude parses it into a ready-to-submit invoice
Compliance & Tax
- JPK_FA — invoice register XML for tax authority
- JPK_V7M — monthly VAT declaration XML
- Biała Lista — verify suppliers against the Polish tax whitelist
- CSV export — one-click export for accountants
Team & Accountants
- Multi-user companies with roles: Owner, Member, Accountant, Read-only
- Accountant directory — accountants list public profiles, clients invite them
- Multi-company (PRO) — manage unlimited companies under one account
Platform
- 3 tiers: SOLO (free), BUSINESS, PRO
- Full REST API with key management (PRO)
- Community board — feature requests, voting, bug reports
- AI chat support — in-app Claude-powered help bot
- PWA — installable on Android and iOS
- Bilingual interface — Polish + English
FakturAI — Live product
Clean, modern interface built for speed
Describe your invoice in plain Polish — AI does the rest
Free Solo plan · no credit card · live in minutes
Already on a different system?
We integrate your existing ERP, accounting software, or custom system directly with KSeF — so you stay compliant without switching tools.
Join the FakturAI Community
For registered FakturAI usersGot an idea, a complaint, or a feature you need? Share it directly with the team and help shape the product.
More Products in the Pipeline
We build AI products that solve real business problems. Next up:
LexOS
Coming SoonAn AI operating system for law firms — automates document drafting, case tracking, client intake, and compliance workflows
LeadBot
Coming SoonQualify and score inbound leads from your website or CRM without lifting a finger
Want us to build something for you?
We design and build custom AI products and automation workflows for European businesses.
Book a Free Strategy Call ↗