EU Sovereignty Score
Self-hosted / open sourcePersonal Backup & SyncHeadquarters: US

ChronoSync: sovereignty score and 8 European alternatives

ChronoSync is a file synchronisation and backup application for macOS, developed by Econ Technologies. It offers incremental and bidirectional synchronisation of files and folders, as well as incremental, bootable and data-volume backups. Destinations include external drives, NAS devices, other Macs, PCs and selected cloud services, and the companion app ChronoAgent lets a remote Mac act as a destination. It is aimed at home users and at professionals such as photographers and video editors. ChronoSync is installed as a local Mac application and can be tried before purchase.

Econ Technologies, Inc. is a US company based in Florida, so it is subject to US jurisdiction. Because ChronoSync runs on your own Mac, the location of your data depends on the destination you choose: a local disk, a NAS on your own network, or a cloud service whose own jurisdiction then applies. A European organisation can keep backups inside the EU by selecting EU-based storage, but the software itself remains a product of a non-European vendor.

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Sovereignty score
57 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-3100
    Hosting inside and outside Europe (EU, OTHER)
  • Cryptographic key sovereignty SOV-380
    Closed source, but self-hostable: encryption keys and runtime under your own control
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    Closed source, but self-hostable on your own infrastructure

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
HeadquartersUS (US)Verified by hand
EU adequacy decisionOnly for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Data hostingSelf-hosted, e.g. in EU, OTHER (your choice)Verified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
CategoryPersonal Backup & Sync
TypeProduct
Websiteecontechnologies.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to ChronoSync

The European alternatives to ChronoSync come from our knowledge base of over 6,200 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

19 European Personal Backup & Sync 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 ChronoSync

ChronoSync is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

ChronoSync runs on infrastructure you choose and control yourself. You decide where the data lives, including fully within the EU if you want — this is not a fixed hosting choice made by the vendor.

ChronoSync is closed source, but you run the software yourself on your own infrastructure. The encryption keys and the runtime therefore stay under your own control, though you cannot audit or modify the source code. Ask about export options and open standards to limit software-level lock-in.

What this means for your organisation depends on your whole stack and context. The free assessment weighs ChronoSync 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 ChronoSync?

It depends on your use case. Strong EU alternatives to ChronoSync include Acronis True Image, Ashampoo Backup and Backup4all. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to ChronoSync?

Yes. Open-source EU alternatives to ChronoSync include BorgBackup, Cryptomator and FreeFileSync. These keep your data fully under your own control and let you self-host if you want to.

Is ChronoSync GDPR-compliant and where is the data hosted?

ChronoSync is headquartered in US and hosts data in EU, OTHER. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. 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 Personal Backup & Sync

Personal Backup & Sync: Personal backup tools, file synchronisation and data recovery. 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.

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8 European alternatives to ChronoSync — GDPR-compliant & EU-hosted · EU Sovereignty Score