Is Addingwell in the EU? Is it GDPR-compliant?

Yes, Addingwell is a French company with data in the EU — it's GDPR-compliant. DataNostro offers the same EU residency (a Tier III data center in Germany), plus Czech jurisdiction + zero US sub-processors on the data plane.

Does Addingwell support Seznam Sklik and Heureka?

No. Addingwell is primarily optimized for the French and UK markets — it has no native tags for the Sklik Conversion API or Heureka tracking. DataNostro has both native, pre-configured, click and it runs.

Should I pay in EUR (Addingwell) or CZK (DataNostro)?

For Czech accounting, CZK makes sense. An EUR invoice from Addingwell has to be manually converted in Pohoda/Money S3 at the daily CNB rate both when posting and when paying (exchange differences = more entries). DataNostro issues a CZK invoice directly with ISDOC import — no exchange rate, no overhead.

Can you get an ISDOC invoice from Addingwell for import into Pohoda?

No. Addingwell issues a PDF invoice that you have to enter into accounting manually or via OCR. DataNostro issues an invoice in the ISDOC format (a Czech standard) — you import it into Pohoda / Money S3 / iDoklad / FlexiBee with one click.

What language are the support and dashboard in?

Addingwell: English + French. DataNostro: Czech, Slovak, English, German — both the dashboard and support. For a Czech-speaking team + communicating with Czech accounting and legal, it's the difference between translating and just working.

How long does migration from Addingwell take?

3–5 days including parallel verification and the CNAME switch. No tracking downtime — old + new run in parallel, events are compared in debug capture, then we switch DNS. We leave Addingwell active for another 7 days for rollback.

Will my Addingwell tag templates survive the migration?

Yes. Tag templates are stored in the GTM Workspace in Google Tag Manager, not on the Addingwell side. The Container Config just points at the workspace — the tags stay.

Can I run Addingwell and DataNostro in parallel?

Yes. We recommend a 24-48h overlap as a safety net before cancelling Addingwell.

How does DataNostro pricing differ from Addingwell?

Comparable on price (both ~€50–70/mo for medium traffic). DataNostro is CZK 1,690 (~€68). The main differentiator is the CZ-market integrations and the invoice language.

ADDINGWELL → DATANOSTRO

EU for EU. ISDOC, Sklik, and Czech support on top.

Addingwell is a solid choice if you only need EU hosting + a generic sGTM. For the Czech and Slovak markets it lacks ISDOC invoicing, Sklik native, the Heureka XML feed proxy, and Czech-language support during EU business hours. DataNostro covers all of that — the same EU promise, plus CZ-market depth. If you need FR support or Addingwell-specific features (e.g. their specific tag templates), tell us and we'll advise honestly.

Migration bonus — ADDINGWELL-MIGRATION-15 = 15% off for 3 months

Migration concierge — Care Migrate yourself (wizard)

First consultation free. No commitments. We reply within 4 hours during EU business hours.

FEATURE-BY-FEATURE

Where they actually differ

Similarly priced, both EU. The differentiators are elsewhere — in invoicing, integrations, and support for the CZ market.

Features	Addingwell	DataNostro
EU data residency	✓ FR	✓ DE (Tier III)
Billing in CZK	✗ EUR only	✓ CZK / EUR
ISDOC for accountants	✗	✓
Sklik retargeting + conversions native	✗ custom tag	✓ native
Heureka XML feed proxy	✗	✓ POAS data feed
Heureka Customer Satisfaction	✗	✓
Czech + Slovak support	✗ EN/FR	✓ CZ/SK/EN
GA4 + Meta CAPI + Google Ads + TikTok + LinkedIn	✓	✓
Klaviyo, Pinterest, Snapchat, Reddit, Awin, MS Ads	partial	✓ 18 platforms
Auto SSL (Let's Encrypt)	✓	✓
Custom Loader (anti-adblock)	✓	✓
Cookie Keeper (ITP recovery)	✓	✓ PRO+
Multi-region failover	in Enterprise	single-region (DE)

If you only do international e-commerce and don't need Sklik / Heureka / ISDOC, Addingwell will broadly cover your needs. For the CZ market, DataNostro genuinely saves you custom integration work and accounting friction.

TIMELINE

Migration without downtime — parallel deploy + DNS cutover

Lower the CNAME TTL to 300 s

At your DNS provider 24–48 h in advance. Insurance for fast propagation at cutover.

Export the Container Config from Addingwell

In the Addingwell dashboard → your container → Settings → Container Config (Base64). Copy it.

Account + import

Sign up for DataNostro (14 days free) → Import sGTM → select "Other hosting" → paste the Container Config + tracking domain.

Parallel deploy + smoke test

Deploy in the dashboard = ~2 min, SSL auto. In the GTM workspace you switch preview to our endpoint and test. Addingwell keeps running — no impact.

DNS cutover + monitoring

Switch the CNAME to our target (5–15 min DNS propagation thanks to the lowered TTL). Leave Addingwell running for 24–48 h as a safety net, then cancel it.

Launch the migration wizard →

FAQ

What if I have custom Addingwell tag templates?

The Container Config Base64 you export contains the workspace ID + auth — but tag templates are stored directly in the GTM Workspace in Google Tag Manager, not on the Addingwell side. Tags survive migration unchanged.

Can I keep both running longer?

Yes. Addingwell + DataNostro deployed in parallel don't conflict — different subdomains. We recommend 24–48 h as a safety net, then cancel Addingwell. Billing is pro-rated by day.

How about GDPR? Both are in the EU.

DataNostro hosts in Germany (an EU Tier III data center), Addingwell in France. Both EU/EEA, both GDPR-compliant. For a tailored DPA document (GDPR Article 28) we offer a self-service download in the dashboard — Addingwell typically requires emailing support.

And the price? Are they comparable?

Yes, both around €50–70/mo for medium traffic. DataNostro is CZK 1,690 (PRO, ~€68). The differentiator isn't price but CZ-market features + the invoice language (CZK + ISDOC).

Can I have the migration done for me?

Yes — the DataNostro Care Standard package (CZK 19,900) includes a complete migration under our supervision, 5–7 days from signing to live tracking.

Ready to switch?

Fill out the wizard and we'll email you a migration checklist. No commitments.

Start the migration → Compare prices

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