About REENG
Built by engineers who watched too many front desks freeze when the wifi dropped. So we made software that keeps running when the internet doesn't.
The Problem We Solve
When the internet drops at a spa or restaurant, the failure is specific: the front desk can't pull up the 2pm booking, the card terminal times out, and the customer at the counter walks out. In Vietnam that happens weekly, not yearly.
So we built REENG the other way around. Everything works on the device first, and the cloud catches up when it can. Bookings, payments, and receipts keep going whether the wifi is up or not.
Our Mission
Keep service shops running reliably, online or off — so your staff never has to tell a customer 'sorry, our system is down.'
What We Believe
Reliability First
Your POS should work even when nothing else does. We build for the worst-case scenario so you never have to worry.
No manual needed
If a new receptionist needs a training manual to take a booking, we built it wrong. Every screen should make sense on the first shift.
Offline by Design
Not an afterthought, not a fallback. Offline capability is baked into every feature from day one.
Built from support tickets
Our roadmap comes from what spa receptionists and restaurant cashiers ask us for, not from a whiteboard full of hypotheticals.
Why REENG?
True Offline-First
Full POS, booking, and management — even with zero connectivity. Not just cached pages.
7 service industries
Spa, salon, nail, beauty clinic, restaurant, bar, KTV — one platform, tailored per vertical.
Instant Sync
When the connection comes back, every device syncs on its own. Two tablets that edited the same booking merge instead of overwriting each other.
No Subscription Lock-in
Your data is yours. Export anytime, cancel anytime. We earn your business every month.
Built for Vietnam
Vietnamese language, local payment methods, and tax invoices formatted for Decree 123/2020. Made here, for here.
Our Team
We're a small, focused team of engineers and designers at CoreX Solution who've spent years building tools for the service industry. We ship fast, listen to users, and care deeply about reliability.
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