
Rebel X Brands
B2B growth
Wholesale kratom, kava and hemp manufactured in Austin and supplied to licensed retailers across the US. A B2B platform built for trade buyers: five house brands, per-batch lab results, account management.
+91 70034 16634 · hello@syscodes.in
Kolkata IST
Android for Chennai teams
Kotlin and cross-platform Android for Chennai teams, including the field and dealer apps that have to keep working when the signal does not.
30-min call with a senior lead · Reply within 1 business day · NDA on request

Projects shipped
Brands and clients
On-time delivery
Countries served
01The practice
Native, hybrid or a web app. What the app has to do on the device decides which of these is right.
What we cover on Android · API 24+
02Services
| Native apps Kotlin and Jetpack Compose against the current SDK. Worth it when document capture, printing or on-device processing has to work every time. | Hybrid and cross-platform apps One React Native or Flutter codebase for both stores, localised properly, and tested in Tamil on a real device rather than in English with the words swapped. | Web apps and PWAs An installable web app when a Play listing is not worth the overhead. Often the fastest way to put a dealer tool in front of people. | |
|---|---|---|---|
| Typical timeline | 12–16 weeks | 10–14 weeks | 8–12 weeks |
| Next stepQuoted per project after a free consultation. | Explore Android app development → | Explore hybrid app development → | Explore web app development → |
Kotlin and Jetpack Compose against the current SDK. Worth it when document capture, printing or on-device processing has to work every time.
One React Native or Flutter codebase for both stores, localised properly, and tested in Tamil on a real device rather than in English with the words swapped.
An installable web app when a Play listing is not worth the overhead. Often the fastest way to put a dealer tool in front of people.

03Included
Factory floors, dealer visits and coastal routes all lose signal. Work queues on the device and reconciles on reconnect, with conflicts resolved rather than dropped.
Interface and content in Tamil where your users need it, with type size and line height checked on a real device rather than machine-translated.
ERP, dispatch and the dealer database. We build against your test endpoints rather than a mock, because that is where adoption is won.
Chennai product companies run real code review. Work lands in your repository in reviewable branches, documented for whoever inherits it.
A device pass across the Android versions in actual use across your field team, not just the newest flagship.
Source, keystore and Play Console ownership in your name. Nothing depends on us staying.
Kotlin · Jetpack Compose · React Native · Room · WorkManager · Firebase · ERP integration · Razorpay · Crashlytics · Play Console
04Working from Chennai
We are a Kolkata studio. Here is what that actually means for a Chennai client, stated plainly.
The city runs on product companies with real engineering discipline. We write code that passes your review, not agency code that passes a demo.
Chennai briefs often reach past the storefront into dealer portals, dispatch and export documentation. We have built those unglamorous screens.
Interfaces and content in Tamil alongside English, with type size and line height actually tested on the page rather than machine-translated and shipped.
IST throughout, so a 10am standup in Chennai is a 10am standup for us. No overnight handoff and no waiting a day for an answer.
Every invoice carries our West Bengal GSTIN. IGST applies across state lines, and the input credit is claimable. No offshore paperwork.
Everything runs on video, in your tracker, with a staging URL you can open whenever you like. Nothing about the work depends on being in the same room.
Served from Kolkata, our one officeChennai and Kolkata --:-- IST · same working dayBook a call →
05Process
Five stages, a scope fixed in writing, and a senior Android engineer in your standup rather than behind an account manager.
We watch the job being done before designing for it. Who opens the app, on which handset, and where the signal dies. For a field app that last answer changes more of the design than the feature list does.
Screens drawn to Material, not a desktop mock shrunk down. Clickable flows at real Android densities, with thumb reach, the back gesture and notification behaviour decided before anyone writes code.
A signed build on your phone every fortnight. Two-week sprints, each ending with an internal-track release you can install and use. Code lands in your repository as it is written.
Real handsets, and the network genuinely switched off. A device lab pass, a battery run, and offline testing that actually disables the connection rather than simulating it. Then Play review preparation.
Staged rollout, then whatever the crash log says. We ship to a small percentage first and watch. After launch, monthly reviews on crashes, retention and the screens people abandon.
Stage 02 · Design





06Results
A sample of the products and apps we have shipped. The portfolio has the rest, with the numbers attached.

B2B growth
Wholesale kratom, kava and hemp manufactured in Austin and supplied to licensed retailers across the US. A B2B platform built for trade buyers: five house brands, per-batch lab results, account management.

Bookings, week one
Hands-on drone and autonomous-driving courses run on real hardware in Berlin, taught in eight languages. The site runs the business: students browse upcoming dates, pick one and confirm a place without anyone in the loop.

To indexed
Alcohol-free kava and kratom tonics, positioned as the drink you have instead. Google would not show the site at all, not even for the brand name, because it was buried in duplicated AI-written content. We stripped it, rewrote it, and rebuilt on Shopify.
$10k+ Daily sales

Conversion rate
Handmade Spanish padel bags built to go from court to office to dinner without changing. A small, considered range, so the store is written as a story rather than laid out as a catalogue.
+35% Order value

Sales
Dermatologically tested anti-chafe and anti-rash gels for runners, cyclists and triathletes. A dated Shopify store rebuilt around the moment of trust this category turns on: proof that it works over a long distance.
<1.5s Page load

Direct revenue
Stress balls, journals and planners for people managing their own mental load. An established Amazon seller that wanted a direct channel of its own: catalogue ported across, multi-market listings configured, conversion designed for.
No.1 Channel, ahead of Amazon
Tell us the number that is stuck. A senior lead replies within one business day with an honest view, free.
or WhatsApp +91 70034 16634
9.9/10 client score · 150+ projects · 100% on time
07Clients
130+ brands across retail, healthcare, education and manufacturing.
























08More in Chennai
The same team, working on the rest of what Chennai clients ask us for.
09FAQ
The ones that come up most in a first conversation.
Still unsure?
Ask us anything before committing to a call. Most questions get a real answer within a few hours.
hello@syscodes.in →Yes. We are a Kolkata studio working on IST, with the same hours as your team. Weekly video calls, your tracker, and a staging URL you can open whenever you like.
Yes, and for field and dealer apps it has to. Work is queued on the device and reconciled when the connection returns, with conflicts handled rather than silently dropped.
Yes, alongside English, with type size and line height checked on a real device. Machine translation dropped into an English layout breaks both.
Usually. We build against your real test endpoints rather than a mock, and scope the integration before quoting, because that is where these projects get hard.
We assume they will. Work lands in your repository in reviewable branches with a signed build every fortnight.
Yes, including listing copy, screenshots, the data-safety declaration and staged rollout. The Play Console account stays in your name.
An MVP is about eight weeks, a full field app twelve to sixteen depending on integrations. Scope is fixed in writing so the date does not drift.
10Start a project
Thirty minutes, free. Tell us what the site must do and who will run it.
You'll hear back from a senior lead, never a bot.