Frequently Asked Questions

Hamerly runs directly in your browser — no download needed. Open app.hamerly.co on your phone, tablet or computer and you're in. On iPhone: tap the Share button in Safari, then 'Add to Home Screen' for faster access. On Android: tap the menu in Chrome and choose 'Add to Home Screen'.

Yes. Hamerly automatically generates a legally compliant Bautagebuch PDF directly from your live project data — one click, every day accounted for. Select a date range (up to 31 days) and download a complete document with a cover page, one section per day (weather, daily protocol with checklist, photos in a 2-column grid, working hours by company, tasks by status, issues, and sign-off), and a full project ZIP. No manual formatting, no Word templates needed.

Yes — and it's compliant by architecture, not just policy. When Bauleitung (the general contractor) views the time tracking tab, they only see company-level totals: company name, worker count, and net hours per day. Individual worker names, clock-in/out times, and approval history are never visible to Bauleitung — only to the worker's own company. A permanent privacy notice in Hamerly explains this. This design satisfies the GDPR data minimisation principle and the Swiss DSG, and removes the legal and works-council objections that have historically blocked digital time tracking in the DACH market.

Yes. We believe in full data ownership. You can export the full project documentation as a ZIP or PDF whenever you need it.

A project remains active for 12 months after it is created. If the project is not archived during that time, it will remain active until the end of the 12 month period. After one year, the project automatically expires.

After a project expires, you have 90 days to renew the project or download all project data. During this time, all project data remains fully accessible. If the project is not renewed within those 90 days, the data will be automatically deleted.

If you archive a project, a 90 day period begins during which you can download all project data. After those 90 days, the data is automatically deleted.

When you renew a project, all data remains unchanged. Nothing is deleted or reset. The project simply continues running.

Yes. You will receive notifications before a project expires. At that point, you can choose to: renew the existing project or start a new project.

No. Once project data has been deleted after the retention period, it cannot be recovered. We recommend exporting all relevant data before the deletion deadline.

The software is designed to feel familiar to tools site managers already use. Training usually takes around 30 minutes for a site manager. Subcontractors typically require no training at all.

No — subcontractors (Gewerke) get full access to the project for free. They can view and complete tasks, upload photos, communicate and manage their own team members at no cost. The only paid option for subcontractors is the HR add-on (CHF 50 / company / year, requires an active Base plan) if they want to use time tracking for their workers — optional and covers all their projects.

Yes. Construction sites often have poor reception, especially in basements or early construction phases. Hamerly still gives you access to project information in the browser on your phone or tablet without a connection. Offline mode is read-only. As soon as a connection is available again, synchronization resumes automatically in the background.

All project data is stored in Germany. Our infrastructure is designed to meet the strict privacy and compliance requirements of the European construction industry. This ensures that your data stays within Europe and is protected under GDPR regulations.

You fully own your project data. Hamerly only stores and processes your data so you can manage your construction projects. You can export or download your data at any time. You always retain full control over all project information.