The apps behind a Macau shop chain and a 24‑hour gym.
We designed, built and still look after the systems behind Macau Nutrition and Flex Fitness: the shopping app, website and AI assistant, the POS in three shops, the rider and manager apps, and Flex's gym platform with face-scan turnstiles.

- Shopping appLive
iPhone, iPad and Android. Shop, earn points, pay with MPay, follow the delivery live.
For customers - WebsiteLive
macaunutrition.com, bilingual, one cart and account with the app.
For customers - Maximus AILive
Text, photo and voice assistant in the app and on the website.
For customers - POSLive
Tills for three shops and a warehouse. Drives online stock and member points.
For shop staff - Manager appIn use
Sales per shop, orders and refunds, reorders, members and push messages.
For owners and managers - Rider appIn use
Claim deliveries, navigate, confirm with a time- and GPS-stamped photo.
For delivery riders - Flex gym adminLive
Memberships, till and day-end, classes, front desk and reports.
For gym staff - Flex member appBeta
QR entry, memberships, classes, trainers and rewards.
For gym members - Face-scan turnstilesPilot
Face recognised on the reader, checked against each member's plan.
For gym members
Macau Nutrition: three shops, one online store, one system.
macaunutrition.com
A bilingual online shop sharing one catalogue, account and cart with the app, so a basket started on the phone can be paid on the laptop. Maximus is on every page.

iPhone, iPad, Android
Browse, earn points, pay with MPay and follow the delivery live.
Every shop's day on one screen
Today's orders and takings for Taipa, Patane, Areia Preta and online. Orders waiting to ship, unpaid orders, stock to reorder, members and push messages to customers.
Deliveries without phone calls
Riders go on duty, claim deliveries pushed to them and confirm each one with a photo stamped with time and GPS. Customers follow the rider on a map, on the iPhone Lock Screen and in the Dynamic Island. Managers see each rider's deliveries and record their pay.
Tiers that pay back
Silver, Gold and Platinum take 2%, 4% and 8% off every order. Points buy rewards straight from the cart, and one wallet works in the app, on the website and at the shop tills.
Find a shop that's open now
Each shop with address, phone, opening hours, an "open now" badge and directions.
Maximus answers like a good shop assistant.
Customers type, talk or send a photo to Maximus in the app and on the website. It answers from the shop's live data and the customer's own account, and hands over to staff on WhatsApp when it should.
- Knows the shopProducts, prices, promotions and what's in stock right now.
- Knows the customerTheir tier, points and recent orders, so it can explain a discount or when a delivery will arrive.
- Reads photosA photo of a tub finds the matching product. A screenshot of an order brings up the real order.
- Talks, in Cantonese or EnglishBy voice it can fill the cart and prepare checkout. Payment only starts when the customer confirms on screen.
From cart to doorstep in four steps.
- CartShows how far the customer is from free delivery, points items and free gifts.

- CheckoutPoints and the member discount are taken off, so the total is final before paying.

- MPayThe app opens MPay. The order is confirmed only by MPay's signed message to our server, never by the phone, and can't be paid twice.

- DeliveryA shop packs it, a rider claims it, and the customer follows it live and gets a PDF receipt.

On macaunutrition.com, MPay opens Macau Pass's secure payment page. Alipay and WeChat Pay are coming.
Flex Fitness: gym software and face-scan entry for three 24‑hour clubs.
The turnstile knows the member, and their plan.
Members enrol their face once in the app, with a live check so a photo won't pass. The reader at the turnstile recognises them on the device, and our server checks the plan: club, dates and entry hours. A midnight-access plan only opens the gate between 00:00 and 08:00.
If the network drops, readers keep working for up to 8 hours on a signed permission. The rotating QR code is the backup, and members' consents are kept with their agreements in the app. Now in pilot at Areia Preta.
- Enrollive face check in the app
- Face scanmatched on the reader
- Plan checkclub, dates and entry hours
- Gate opensvisit logged; exit closes it
The software the front desk runs on.
- Memberships: plans, holds, renewals, transfers
- Till and day-end cash-up
- Classes, rooms, trainers, attendance
- Live arrival alerts and who's in the gym
- Door rules, readers and face enrolment
- Reports, campaigns and rewards
Designed before it's built.
Every screen is designed in Figma, so you see and approve the app before we write the code.
Icons, illustrations, store graphics and logos, including the Synexa mark.
We're in the Apple Developer Program and design to Apple's Human Interface Guidelines, so apps feel at home on iPhone and get through App Store review.
Calm layouts, clear type and few colours, in the style of current European product design.
Need something like this?
A shop app, a rider app, a gym member app or the whole system. Tell us how your business runs.