Offline Window Software

Window software that works fully offline. Design, measure, price, and quote without any internet — essential for rural sites, high-rise construction, and international mobile work.

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Offline Is Not a Gimmick — It's a Requirement

Cloud-only software is broken on any real construction site. Doorwin was built offline-first from day one.

1

Full Feature Set Offline

Design windows, measure site, configure options, calculate prices, produce quotes, export PDFs, capture photos, sign off jobs — all without internet. The mobile apps run on-device; cloud sync is an add-on, not a dependency.

2

Data Resilience

Every write (measurement, quote, edit) is persisted locally immediately. Kill the app mid-edit, drop the phone, lose signal — the data survives. When signal returns, sync applies automatically. Tested across millions of field hours with no reported data loss incidents.

3

Multi-Day Offline Operation

Take the tablet to a remote construction site, work for 3-5 days offline, sync back at the office. All local changes push to cloud; remote changes (from office) pull down. Merge conflicts (both parties edited the same quote) flagged for manual resolution.

4

Bandwidth-Conscious Sync

When sync runs, only changed records transfer. A typical day's offline work (20 surveys, 5 quotes, 40 photos) syncs in 30-90 seconds on 4G, or 3-5 minutes on slow hotel WiFi. Never a multi-hour sync that blocks the device.

Frequently Asked Questions

Why does offline capability matter for window software?
Window professionals work where signal is unreliable — construction sites behind concrete, rural properties, commercial basements, underground car parks, remote listed buildings. A cloud-only window tool fails at exactly the moment you need it most. Offline-first design eliminates this failure mode entirely.
Is there a feature difference between offline and online mode?
Minimal. All core work (design, measure, price, quote, photo, sign-off) is identical offline. Features requiring live external services — currency FX updates, payment links for deposits, live supplier API integrations — wait for connectivity. Every customer survey since 2020 confirms the offline feature set is fully sufficient for field work.
Do I need to manually sync?
No. Automatic background sync triggers when signal returns. Manual sync is available for users who want control (common in security-sensitive contexts like military bases or prison construction where sync timing matters). Toggle in settings per device.
What happens if two people edit the same quote offline?
Both edits reach the server; last-write-wins is NOT the default (too risky). Instead, conflicts are flagged for manual resolution in the admin dashboard — showing both versions side by side so a supervisor picks the correct one. Rare in practice (quote files typically have a single owner), but properly handled when it happens.

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Window Software That Never Stops Working

Offline-first. Sync-when-convenient. Built for real construction sites. Free to download.

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