Swiss-made software

Your financial activity, simplified.

Fiduciary workflow available today, AI accounting and budget in the making. Three independent products, hosted in Switzerland.

  • Hosted in Switzerland
  • nLPD & GDPR compliant
  • Built-in AI
  • Native Crésus & Dr.Tax
Matthieu Schmid, co-founder ark.swiss
From the founder

Why ark.flow exists

I built ark.flow Compta because doing my own bookkeeping on Crésus was costing me a week every semester to catch up. My fiduciary saw the V1 and asked for a module no one else offers: automated DI/DT comparison. ark.flow Fiduciaire was born from that conversation.

At ark.swiss we already build other business software in daily use: ark.plan (company management) and ark.stock (inventory management, chosen for the Crans-Montana Alpine Ski World Cup 2026). ark.flow completes the set on the accounting and fiduciary side.

— Matthieu Schmid
co-founder ark.swiss
Why ark.flow

A family of tools built for Swiss SMBs.

Swiss-made

Data hosted in Switzerland at Infomaniak. nLPD and GDPR compliance guaranteed. No data leaves Swiss territory.

Built-in AI

Automatic categorization, PDF extraction, AI-assisted client replies. AI at the service of your productivity, not a gadget.

Three tools, one brand

Fiduciaire for client files (available). Compta for bookkeeping and Budget for planning (in the making). Three independent products — pick the one that fits you.

Bank-grade security

Per-client AES-256-GCM encryption, httpOnly sessions, CSRF protection, rate limiting. Single-tenant architecture.

Swiss standards respected

Native Crésus export and Swiss bank imports on the Compta side. Dr.Tax import on the Fiduciaire side. We integrate with what you already use.

AI — your choice, your sovereignty

Four providers. You decide.

Pick your AI provider at signup, switch anytime from admin. Infomaniak is the default — for maximum sovereignty.

Infomaniak

Kimi / Mistral / Qwen (open-source)

Default · Recommended
Hosting
Switzerland 🇨🇭
Privacy
Maximum — data and AI never leave Swiss soil, strict nLPD compliance.
Strength
Absolute sovereignty. No transfers outside CH, independent Swiss host. Automatic routing to the open-source model best suited to each task (Kimi, Mistral, Qwen).
Tradeoff
Generally slower responses than major US models. Very complex reasoning cases (long-form writing, deep tax analysis) benefit more from Anthropic or OpenAI.
Recommended for
Firms with strict sovereignty requirements (sensitive clients, professional secrecy).

Anthropic Claude

Claude Opus / Sonnet

Hosting
United States 🇺🇸
Privacy
Very good — no-training by default since the API launch (stable historical policy), Zero Data Retention available, EU DPA. More privacy-respectful than OpenAI and Gemini; still less sovereign than Infomaniak self-hosted in Switzerland.
Strength
Best reasoning quality on complex texts (tax analysis, claim drafting). Very low hallucination rate.
Tradeoff
US hosting under the Cloud Act — less sovereignty than the Swiss option. Higher per-request cost than GPT or Gemini.
Recommended for
Firms seeking maximum quality, open to a US partner serious about privacy.

OpenAI GPT

GPT-4 / GPT-5

Hosting
United States 🇺🇸
Privacy
Standard — EU DPA available, no training on API data by default.
Strength
Very broad versatility and speed. Largest model ecosystem (text, vision, audio).
Tradeoff
US hosting (Cloud Act). Higher hallucination rate than Claude on complex reasoning. Retention policy has shifted — worth watching.
Recommended for
Firms already familiar with ChatGPT who want to stay in the same model family.

Google Gemini

Gemini Pro

Hosting
United States / EU 🇺🇸🇪🇺
Privacy
Standard — DPA via Workspace, native integration if you already use Google.
Strength
Strong native multimodal (PDF + images OCR included), very large context window, competitive pricing.
Tradeoff
Google hosting (US/EU). Legal/tax reasoning quality below Claude. Privacy documentation less clear than Anthropic.
Recommended for
Firms already on Google Workspace or processing many scanned documents (multimodal OCR).
Your compliance, our priority

Your data stays in Switzerland. Always.

ark.flow encrypts all sensitive data with AES-256-GCM and hosts it at Infomaniak in Switzerland, in compliance with the Swiss data protection law (nLPD) and European GDPR.

Infomaniak Suisse AES-256-GCM nLPD RGPD
FAQ

Frequently asked questions.

  • Where is my data hosted?
    All data is hosted exclusively in Switzerland, on Infomaniak servers certified ISO 27001. No data leaves Swiss territory. nLPD and GDPR compliance guaranteed.
  • Do the three ark.flow products work together?
    Each product is independent: Fiduciaire (available), Compta (early access open) and Budget (in the making) work separately, each with its own signup, subscription and workspace. Technical bridges (Crésus import/export, shared APIs) will make round-trips easy if you use several of them — but nothing requires you to bundle them.
  • Compatible with Crésus?
    ark.flow Compta (in early access) will export natively to Crésus Accounting and Salaries. Import is also planned for users migrating from Crésus.
  • How long to get started?
    Your workspace is operational as soon as you sign up. Configuration, data import (bank accounts, client files) and training happen afterwards, with you, at your pace.
  • Which Swiss banks are supported?
    Automatic import from ZKB, UBS, PostFinance, Raiffeisen, Banque Migros, and all cantonal banks. We regularly add new integrations.
  • Can I change plans at any time?
    Yes. You can upgrade or downgrade your plan at any time from your dashboard. Changes take effect at the next billing cycle.
Ready to start?

Choose the tool that fits you.

30-day trial on Fiduciaire. Compta in early access — join the list to be notified at launch.