Non-EU vendorScheduling & BookingHeadquarters: GB

10to8: sovereignty score and 8 European alternatives

10to8 is an appointment scheduling tool, now branded Sign In Scheduling and part of the Sign In App visitor management product. Visitors can book, reschedule or cancel their own appointments online or by phone, and booking pages can be customised and branded. Booked appointments automatically pre-register visitors in Sign In App, missed appointments are marked as no-shows, and automated reminders and messages aim to reduce missed appointments. Post-visit surveys and reporting are included, and a central portal manages multiple locations, services and staff. It is delivered as an online service, and existing customers continue to log in at app.10to8.com.

The service is operated by Sign In App Ltd, part of Sign In Solutions Inc. or its affiliates, and the software is not open source. The pages consulted do not state where data is hosted or mention the GDPR; they link to a data security page, a trust centre and a privacy policy. A European organisation should review these documents and the processing terms before use.

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Sovereignty score

32 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-250
Headquartered outside the EU (GB)
Data residency SOV-30
No hosting in Europe (OTHER)
Cryptographic key sovereignty SOV-340
Key management with a non-European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-630
Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 9, 2026

Headquarters	GB (OTHER)Verified by hand
EU adequacy decision	Yes — found adequate by the European CommissionVerified by hand
Sovereignty model	Vendor-hosted (non-EU)Verified by hand
Data hosting	OTHERVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	NoVendor-stated
Category	Scheduling & Booking
Type	Product
Website	signinapp.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to 10to8

The European alternatives to 10to8 come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

39 European Scheduling & Booking vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with 10to8

10to8 is headquartered in GB, outside the EU. Contracts and data therefore also fall under non-European law. The GDPR applies through contractual terms, but in a conflict with local legislation you have less certainty than with a European vendor.

10to8 hosts data outside the EU (OTHER). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

10to8 is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs 10to8 together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to 10to8?

It depends on your use case. Strong EU alternatives to 10to8 include Agendize, Billetto and Bokadirekt. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to 10to8?

Our list of EU alternatives to 10to8 is mostly commercial options. Browse the category on the map for open-source choices.

Is 10to8 GDPR-compliant and where is the data hosted?

10to8 is headquartered in GB (OTHER) and hosts data in OTHER. Its GDPR compliance is limited or unclear. For full EU data residency the EU alternatives on this page usually offer more certainty.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 9, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Scheduling & Booking

Scheduling & Booking: Appointment scheduling, online booking systems and calendar management. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

Also in this category

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