Metro Manila averages 4 brownouts per week. Most cloud POS systems stop working. Nexus7 doesn't — here's the architecture behind that.
Metro Manila averages roughly 4 brownouts per week across different districts. In provincial areas — Visayas, parts of Mindanao — it's higher. For a cloud-dependent POS, every one of those brownouts is also a system outage.
Meralco's distribution area alone — which covers Metro Manila and surrounding provinces — records thousands of interruption events annually across its service territory. Local distribution utilities (LDUs) outside Metro Manila report even higher frequency. Add to this the typhoon season (June–November) when outages cluster, and a business relying on continuous internet connectivity is making a fragile assumption.
Most cafés and retail stores have UPS (uninterruptible power supply) units that keep devices running for 20–60 minutes during a brownout. The hardware stays up. But if the POS software requires a live connection to a cloud server to process transactions — which most SaaS POS systems do — the UPS buys you nothing.
An offline-first POS stores all necessary data locally on the device — product catalog, pricing, open orders, transaction log — in a local database (SQLite on native apps, IndexedDB on browser-based). Transactions are processed entirely on-device. The cloud sync is a background process that runs when connectivity is available, not a requirement for the primary function.
During an outage, Nexus7 keeps running:
During Typhoon Egay in 2023, one of our beta pilot locations lost internet connectivity for 6 consecutive days. NexusSales continued operating in full offline mode throughout — 2,847 transactions processed and queued locally, synced to the cloud within 4 hours of connectivity returning. Zero data loss. Zero system failures. The store owner's only complaint was the heat.
Offline-first is not a feature. For Philippine businesses, it's the baseline requirement.
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