Custom Software Development Company

Custom Software Development Company in India

Built for how Indian companies actually buy and run software. GST-aware invoicing and e-invoice IRNs where money moves, UPI and Aadhaar eKYC where customers sign up, hosting in an Indian region when the data cannot leave, and the DPDP Act and CERT-In reporting scoped in discovery rather than retro-fitted. Written, tested and supported from our Noida office on IST.

Start Your Software Project

Trusted by teams worldwide

Connexate Meshmedia Oaky Setia Haruman Wave Sugar

What We Build for Indian Businesses

Six lines of work, and each one starts from a process a company here already runs by hand. The scope is fixed in writing before the first sprint, in rupees.

01

Product Discovery & Architecture

  • Process and requirement mapping
  • Solution architecture and tech choices
  • Data modeling and API design
  • Fixed scope and delivery roadmap
  • Clickable prototype before we build
Explore Discovery
02

Custom Web & Cloud Apps

  • Responsive web applications
  • SaaS and multi-tenant platforms
  • Real-time dashboards and portals
  • Cloud-native and built to scale
  • Progressive web apps
Explore Web Apps
03

Enterprise Systems & Internal Tools

  • ERP and CRM style platforms
  • Admin panels and internal tools
  • Role-based access control
  • Reporting and analytics
  • One ledger instead of Tally plus four spreadsheets
Explore Enterprise
04

Workflow & Process Automation

  • Automate manual, repetitive tasks
  • Approval and document workflows
  • Scheduled jobs and triggers
  • Smart notifications and alerts
  • Data synced across your tools
Explore Automation
05

Integrations & Legacy Modernization

  • Third-party and system integrations
  • Rebuild aging legacy software
  • Data migration and cleanup
  • Gradual, low-risk rollout
  • Modern APIs over old systems
Explore Modernization
06

Security & Ongoing Support

  • DPDP and CERT-In handled in discovery
  • Encryption and access control
  • Monitoring and alerting
  • Bug fixes and security updates
  • New feature development
Explore Support
Deep Capabilities

Engineering That Holds Up Under an Indian Audit

Six disciplines, and the tooling we reach for in each, chosen for filing deadlines and patchy networks rather than a slide.

Custom web and cloud applications

Customer apps for Indian traffic

Built for the phones your customers actually carry and the networks they actually have: small bundles, offline-tolerant flows, UPI and card checkout that does not drop at 2G.

ReactNext.jsSaaSPWA
Enterprise software systems

One system instead of five

Most mid-sized Indian operations run on Tally for books, Excel for everything Tally cannot hold, and WhatsApp for the decisions. We replace that with one system your team can actually audit.

ERPCRMAdminRBAC
Workflow and process automation

The filing and reconciliation work

GST returns, TDS deductions, vendor reconciliation and e-way bills are where the month disappears. Automate the pass that never varies and leave your team the exceptions.

AutomationJobsTriggersSync
Third-party and system integrations

The rails that matter here

Tally and Zoho for books, Razorpay and PayU for collection, the GSTN for e-invoice IRNs, DigiLocker and Aadhaar for KYC, WhatsApp Business for the conversation your customers prefer.

RESTGraphQLWebhooksETL
Legacy software modernization

The system one person understands

The VB, PHP or Access application that runs a department and has one author left. We map it, rebuild it on something supportable, and move you across without a weekend of downtime.

MigrationRebuildCloudAPIs
Security and DevOps for custom software

Built to the rules that apply here

Hosting in an Indian region when the data cannot leave, payment data kept onshore as the RBI requires, consent and erasure under the DPDP Act, and the CERT-In six-hour incident window rehearsed.

SecurityCI/CDDockerK8s
Free Product Audit

Thinking About Replacing Tally and the Spreadsheets?

One call and a look at how you invoice, file and reconcile today is enough to tell you what has to be built, what can stay where it is, and what the whole thing costs in rupees before you commit to anything.

Get Your Free Audit

Free · No obligation · Back to you in two working days

Planning your custom software project with Appther
Our Process

How a Build Runs, Week by Week

Demos every fortnight on IST, the code in your repository throughout, and nothing signed off by us alone.

1
Week 1

Scope and the filing path

We map the process, the data and, first, everything that has to survive a GST return. The compliance path is scoped before the pretty screens, because it is the part that cannot slip.

2
Week 1–2

Design you can click

Wireframes and a clickable prototype, reviewed on IST with the people who will actually use it, not only the people who signed for it.

3
Week 2–10

Build in the open

Fortnightly sprints with a working demo each time, in your repository from day one, so you can see the code as it lands rather than at handover.

4
Week 8–11

Prove it against real filings

We re-run a period you have already filed and reconcile to the rupee, alongside load testing on Indian network conditions and a security review.

5
Ongoing

Go live and stay

Deployment in an Indian region, documentation, training in the language your team works in, and a named engineer afterwards.

Measurable Impact

What Clients Get on the Other Side

200+

Products shipped

Systems shipped for founders and established operators, a good share of them in India.

100%

You own the code outright

Your repository, your cloud account, your documentation, from the first sprint rather than the last.

40%

Manual work removed

Typical fall in re-keying once invoicing, e-way bills and reconciliation stop being manual.

99.9%

Production uptime

Held through GST deadlines and festival-season peaks, monitored on IST.

Case Studies

Software We've Shipped

Real products, real users, real numbers, across health, mobility, delivery and education.

JoyScore app screens
LIVE IN PRODUCTION
iOS + AndroidHealth

JoyScore: Mental Wellness App

Mood tracking, guided sessions and personalised wellness plans in a warm, calming experience.

4.9★App Store
60K+Active Users
40%Mood Improvement
View Case Study
Lyft It taxi booking app screens
LIVE IN PRODUCTION
Ride HailingReal-time

Lyft It: Taxi Booking App

Live driver tracking, surge-aware fare estimation and multi-payment support in a fast, reliable app.

50K+Rides / Month
30%Lower Wait Time
99.9%Uptime
View Case Study
Here Yet food delivery app screens
LIVE IN PRODUCTION
Food DeliveryLogistics

Here Yet: Food Delivery App

Live order tracking, smart dispatch and route optimisation that cut delivery times across 200+ restaurants.

4.8★App Store
40%Faster Delivery
200+Restaurants
View Case Study
MyBob learning app screens
LIVE IN PRODUCTION
EdTechLearning

MyBob: Coaching & Learning App

Coach matching, personalised study plans and adaptive progress tracking for 10K+ students.

10K+Students
85%Completion
200+Coaches
View Case Study
Tech Stack

The Stack Behind Your Software

React Next.js TypeScript Node.js Python Java PostgreSQL Redis AWS Azure Docker Kubernetes REST GraphQL CI/CD
Industries

Built for Your Vertical

Six sectors where the compliance detail decides the architecture, not the other way round.

Logistics and supply chain software
01

Logistics & Supply Chain

E-way bills generated from the despatch, not retyped into a portal, with multi-state stock and driver apps that keep working through dead coverage.

  • E-way bills at despatch
  • Multi-state stock and branch transfers
  • Driver apps that survive dead coverage
Healthcare software systems
02

Healthcare

Hospital and diagnostic systems aligned to ABDM and the Health Data Management Policy, with records kept in an Indian region.

  • ABHA-linked patient records
  • OP and IP billing with packages
  • Health data kept in an Indian region
Finance and banking software
03

Finance & Banking

Lending, collections and NBFC operations with an audit trail an RBI inspection can follow, and decisions you can explain.

  • UPI, NACH and card settlement
  • Aadhaar and CKYC onboarding
  • Audit trails an RBI inspection can follow
Manufacturing software systems
04

Manufacturing

Job work challans, batch and lot traceability, plant-floor capture and the GST treatment that goes with each of them.

  • Job work challans and returns
  • Batch and lot traceability
  • Plant-floor capture on shared tablets
Retail and eCommerce software
05

Retail & eCommerce

One stock position across store, marketplace and ONDC, with GST-inclusive pricing that holds in all three.

  • One stock position across ONDC and marketplaces
  • GST-aware POS and returns
  • COD reconciliation that closes
Professional services software
06

Professional Services

Billable time, retainers, TDS on professional fees and the invoicing that has to reconcile with the books at quarter end.

  • Matter and engagement tracking
  • Billable time to a GST invoice
  • TDS on the receipt, not after it
Client Voices

Trusted By Teams Who Ship

“Appther built our student competition platform exactly the way we envisioned it: easy registration, smooth judging, and real-time results that keep participants engaged.”
Dionna Milem
Dionna MilemOwner · My BOB Team LLC
“Building a mental health platform means every detail has to be handled with care, and Appther got that from day one. The product feels warm, simple, and genuinely helpful.”
Bob Singhal
Bob SinghalProfessor of Joy · Joyscore Inc
“Appther exceeded every expectation, on time and on budget, and the final product has been instrumental in scaling our business. A rare engineering partner.”
Johnathan Peffer
Johnathan PefferCEO · Bull's Eye Technologies Inc
“Rolling out custom software across our operations felt daunting at first, but Appther made the transition seamless. Every department now works off a single source of truth.”
Pushpender Kumar
Pushpender KumarGeneral Manager · AB Sugar Ltd
Latest Insights

Notes on Building Great Software

Field notes from real builds. No hype, just what worked and what didn't.

All Articles
Free 30-Minute Product Strategy Call

Tell Us What You File, Chase and Retype. We'll Tell You What to Build.

Thirty minutes on IST gets you a build plan, the architecture, a rupee budget range and a delivery date you can hold us to. No deck, no obligation.

Feature shortlist Budget range Delivery timeline
Book My Free Call
200+Projects delivered
4.8★Client rating
15+Countries served
99.9%Production uptime

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FAQ

Questions We Hear Every Week

A focused internal tool starts around ₹12,00,000. A platform several departments depend on runs well above it. The figure moves on integrations and compliance scope rather than headcount, and it is fixed in writing after a free scoping call.
A first working release in six to twelve weeks, then fortnightly from there. We put the filing-critical path first, so GST and invoicing are live and reconciled before anything cosmetic.
Stand-ups, demos and UAT run on IST from our Noida office, so a question at 10am gets an answer at 10am. Discovery and architecture, design, sprints with working demos, then deployment with the handover written down.
Yes, all of it: source, documentation and IP, in your own repository and your own cloud account from the first sprint, not handed over at the end. No licence back to us and nothing that needs our permission to change.
Azure Central India, AWS Mumbai or your own account. Payment data stays onshore because the RBI requires it, and for most other workloads an Indian region is simply the easier answer under the DPDP Act.
A named engineer, an IST response window and a support agreement that covers monitoring, security updates and new work. Year-end and GST filing periods get extra cover, because that is when a finance team cannot wait.
An Engineer Replies Within One Business Day

Let's Build Your Software

Tell us what you want to build or improve. No sales pitch, just a straight answer on approach, scope, timeline and cost.

Free 30-min strategy callScoping and honest, practical advice.
Fixed-price quoteDetailed scope and price after discovery, no surprises.
NDA on requestYour idea and code always stay yours.
Prefer to talk now?+91 99114 32288 · info@appther.com

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