About REENG
Built by operators, for operators — because your business shouldn't stop when the internet does.
The Problem We Solve
Every day, thousands of spas, salons, and restaurants lose revenue when their internet drops. Staff can't check appointments, payments fail, and customers walk away frustrated.
REENG was born from this frustration. We built an offline-first platform that keeps your business running no matter what — then syncs everything when connectivity returns.
Our Mission
To help service businesses operate reliably, whether online or offline. No more lost sales, no more frustrated staff, no more '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.
Radical Simplicity
Powerful doesn't have to mean complicated. If your staff needs a manual, we've failed.
Offline by Design
Not an afterthought, not a fallback. Offline capability is baked into every feature from day one.
Customer-Centric
We build what service businesses actually need — informed by real operators, not theoretical use cases.
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
Changes sync seamlessly across all devices the moment internet reconnects. No conflicts, no data loss.
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, e-invoice compliance (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.
Ready to try REENG?
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