Managed sGTM for CZ/SK stores and agencies. Sklik and Heureka as native connectors, invoices in CZK with ISDOC export (Pohoda, Money S3, ABRA), support in Czech, hosting in the EU. No FX fees, no custom HTTP requests for Seznam, no waiting on English support in another time zone.
This is what we hear from teams coming to us from foreign managed sGTM vendors.
The accountant converts the exchange rate every month, the bank takes 0.5–2%, and then the audit raises questions about the intra-community VAT regime.
The global vendor has no native connector. You or your agency have to build it by hand, and when Seznam changes its API, you deal with it yourself.
A ticket at 9:00 AM is handled after lunch, when it's morning in the US. A complex problem = a lost day.
A Schrems II / GDPR audit asks: who's the contracting billing party? If it's a US LLC, your legal team has DPA complications.
PDF invoice → manual retyping into the accounting system → a typo in the company ID → a 14-day dispute.
The Heureka order tracker requires a server-side ping. With a global host = another custom integration.
We won't solve everything the global players do. We'll do well what the Czech market needs.
Realistic expectations for a team switching from a foreign managed vendor.
We build the DataNostro project on a separate subdomain. Your existing setup at the vendor keeps running for now — it's switched over only after validation.
The same test event into both platforms. We compare attribution in Meta Test Events + GA4 DebugView. We turn on the Sklik / Heureka connectors natively (i.e. a checkbox in the dashboard).
CNAME → DataNostro. You leave the previous vendor running for 3 days as a safety net, then cancel the subscription.
We watch match rate, latency, and error rate daily. The first invoice arrives at the start of the next month — in CZK, with ISDOC, with a company ID. Your accountant breathes a sigh of relief.
Tracking data lives in the target platforms (GA4, Meta, Sklik), not in the sGTM host. sGTM only forwards. After migration, data keeps flowing into the same platforms, so the charts stay continuous. The configuration (GTM workspace) is standard JSON that exports and imports 1:1.
We have 13 of our own Power-Ups that cover what most teams use at foreign hosts — Cookie Keeper, Bot Detection, Anonymizer, Custom Loader, Click ID Restorer. Full overview in the dashboard, activated with one click.
The target audience is CZ/SK stores, but the platform is universal — GA4, Meta CAPI, Google Ads, TikTok, LinkedIn, Microsoft Ads, Klaviyo, Reddit, Pinterest, Snapchat. Sklik and Heureka are our differentiator, not a requirement. If you don't use them, the other platforms work just as well.
For most CZ/SK stores (up to ~2M requests/month), DataNostro is 30–50% cheaper — thanks to CZK invoicing with no FX fees and plans set for local purchasing power. For higher volumes (5M+) we recommend comparing 1:1 — sometimes a global player is more competitive. We'll be honest about the price. Pricing
Yes. 14 days free with no credit card. After 14 days you either pay via invoice, or nothing happens — the project goes into a read-only state and you can export your data anytime.
A fair question for a small team. In short: you download your data as a ZIP anytime, the sGTM container is a standard Google image, the GTM workspace is standard JSON. Migration to anything else takes hours. For Enterprise, the contract includes source-code escrow via a notary. The full continuity plan is at /o-nas/.
14 days free. No credit card. No foreign-currency invoices, no English tickets, no custom HTTP requests for Sklik.
Hosting with a foreign provider today? Zero-downtime migration — from Stape, from Addingwell, from Google Cloud, or somewhere else.