Custom Software Development
Custom software built around how your business really works.
Business platforms, customer and partner portals, internal tools and integrations, with working software shown every week.
- Weekly demos
- Fixed-price start
- Source ownership
Free 30-minute call with a senior specialist. Reply within one business day. Based in Jaipur, working with businesses across India.
- Discovery callFree 30 minutes with a senior specialist
- Scoped first phaseWritten scope, timeline and fixed price
- Build with weekly demosWorking software you can see every week
- Launch and supportGo-live with your team ready, then ongoing support
What is custom software development?
Custom software development builds a system around how your business actually works, instead of bending your process to an off-the-shelf product. Stack18 builds web platforms, customer and partner portals, internal tools and integrations, and shows you working software every week.
You need this when…
Tap the ones that apply to you.
Custom Software Development, end to end.
Each capability is delivered by the same team on the Agentic SDLC, with your approval at every critical step.
Business platforms
Core operations.
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Portals
Self-service.
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Internal tools
Remove spreadsheets.
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APIs and integrations
Reliable connections.
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AI features
Search and agents.
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Support
After launch.
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A typical engagement, step by step.
Senior people lead every phase. Specialised AI agents on the Agentic SDLC handle the repetitive work, and nothing ships without your approval.
Discover
Map the current process, data and priorities.
Design
Agree modules, integrations and rules.
Build
Configure and extend in weekly demos.
Launch
Data migration, training and go-live support.
Start small. Scale when it works.
Every engagement begins with a short, fixed-price step so you can judge the fit before committing further. See pricing.
Discovery Sprint
Teams deciding what to build first.
- Duration
- 1–4 weeks
- Pricing
- Fixed price
- Scoped plan and timeline
- Team and fixed price
- Process map or prototype
Custom software project
Teams that want to go live fast.
- Duration
- 8–16 weeks
- Pricing
- Fixed price per phase
- Weekly demos
- Source ownership
- Hypercare
Dedicated team
Needs that a ready-made system does not cover.
- Duration
- Ongoing
- Pricing
- Fixed price per phase
- Weekly working demos
- Senior team accountable
- 30 days hypercare
What we have shipped, and what a typical engagement looks like.
Delivered projects link to the full case study. Illustrative scenarios describe typical engagements and are not named client results.
Ethnic wear D2C, Jaipur
- Challenge
- A ₹100+ crore brand needed website, app and back office to share one catalogue and one record of stock and orders.
- What we do
- Nine specialists built website, mobile app and ERP on one connected foundation in two-week sprints.
3 months
Read the case study →VC-backed wellness startup
- Challenge
- A venture-backed clock: Android and iOS had to launch together, with an admin console for the team.
- What we do
- Scoped the MVP, reviewed clickable prototypes, then built both platforms in two-week sprints.
3 months
Read the case study →Distributor
- Challenge
- Dealers order by phone.
- What we do
- Dealer portal.
8–12 weeks
Free project scoping call
Describe the system. We outline scope, team and a fixed-price first step.
- Scope
- Team
- Fixed price step
We agree targets before we start.
Every engagement has a baseline and a target on the measures that matter to you, reported at every read-out.
Custom Software Development questions.
Fixed price?
Yes, after discovery.
Who owns the code?
You.
Timeline?
Typically 8 to 16 weeks.
Weekly demos?
Yes.
Maintenance?
Optional support.
Ready-made instead?
If a ready-made solution fits, we say so.
Let's scope your Custom Software Development project.
Tell us where you are and where you want to be. A senior specialist will reply within one business day with next steps.
- Free 30-minute consultation
- Indicative estimate after the call
- NDA available on request