The Only CRM with Offline Mode
Work on planes, in basements, or anywhere with poor wifi. Lead16 works perfectly offline and syncs automatically when you're back online.
😤 The Problem
Every other CRM requires internet:
- • ✈️ Can't work on flights
- • 🏢 Blocked in basement offices
- • 📡 Useless with poor wifi/4G
- • 💼 Dead during client meetings in bad areas
- • ⚡ Frozen when internet drops
Result: Lost productivity & missed updates
✅ Lead16's Solution
True offline mode with PWA technology:
- ✓ Works 100% offline
- ✓ All data accessible locally
- ✓ Update deals & create invoices
- ✓ Auto-sync when back online
- ✓ No data loss, ever
Result: Work anywhere, anytime
How Offline Mode Works
Install as PWA
Install Lead16 to your device (phone, tablet, laptop). It works like a native app with all data stored locally.
Work Offline
Lose internet? No problem. Keep working normally—view clients, update deals, create invoices, add notes. Everything functions offline.
Auto-Sync
When you reconnect, changes sync automatically in the background. Conflict resolution ensures no data is lost.
Perfect For...
Frequent Flyers
Update your pipeline on flights. Prepare invoices while traveling. Never lose productivity time.
Basement Offices
Work in buildings with poor wifi or no coverage. Industrial sites, basements, parking garages—no problem.
Field Sales
Update deals between client visits in areas with spotty coverage. Work in rural areas without internet.
International Travel
Avoid expensive international data. Work offline and sync when you find wifi. Perfect for overseas trips.
Client Meetings
Take notes during meetings even if client wifi is down. Create invoices on-site without connectivity worries.
Home Internet Down
Internet provider outage? Keep working. Power outage affecting wifi? Use mobile device offline.
🔧 Technical Implementation
What Happens Offline:
- • All data stored locally (IndexedDB)
- • Changes queued for sync
- • Service Worker caches app assets
- • Conflict-free replicated data types (CRDTs)
- • Optimistic UI updates
When You Reconnect:
- • Automatic background sync
- • Conflict resolution (last-write-wins + merge)
- • Delta sync (only changed data)
- • Retry failed operations
- • Status indicators show sync progress
Offline Mode Comparison
| CRM | Offline Mode | PWA App | Works Without Internet |
|---|---|---|---|
| Lead16 | ✅ YES | ✅ YES | ✅ YES |
| Salesforce | ❌ No | ❌ No | ❌ No |
| HubSpot | ❌ No | ❌ No | ❌ No |
| Pipedrive | ❌ No | ❌ No | ❌ No |
| Monday CRM | ❌ No | ❌ No | ❌ No |
*Verified as of January 2025. Lead16 is the only CRM with true offline functionality.
Frequently Asked Questions
Lead16 uses Progressive Web App (PWA) technology with local data storage. When you're offline, all your data remains accessible and editable. Changes are automatically synced when you reconnect to the internet.
Everything! View and update leads, create and send invoices, check analytics, manage your pipeline, add notes, and more. The only thing you can't do offline is send emails (they'll queue and send when you're back online).
No. Lead16 is the only CRM with true offline mode. Salesforce, HubSpot, Pipedrive, and others all require an internet connection to function.
No. Your data is safely stored locally and automatically syncs when you reconnect. Our conflict resolution ensures no data is lost even if you make changes on multiple devices while offline.
Experience True Offline Freedom
Try the only CRM that works anywhere, anytime—even without internet. Start free today.
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