// service · web app · custom logic

A web app that runs your business process, not just shows a pretty face

Login, dashboards, role permissions, automation, and integrations. For startups, internal tools, or SaaS that need custom logic no off-the-shelf tool offers.

starting tier

Toko Online / Custom

starting price

From IDR 10M

duration

6–12 weeks

category

build

You've maxed out Excel, you're tired of Google Sheets that constantly clash between teams, and foreign SaaS vendors are too expensive for your specific scenario. It's time for your own web app. We build a custom web application that runs your business process exactly as you need it — user logins with different roles, a dashboard with real-time data, automation of repetitive tasks, integrations with other tools (WA, email, payments, accounting), and business logic you define yourself. From IDR 10M, usually 6-12 weeks. Once live, you own a digital asset that grows alongside your business — not just a website standing passively.

// why this matters

Context & rationale.

Most businesses reach a point where generic tools (Excel, Trello, Google Sheets, or off-the-shelf SaaS) no longer fit how they work. The sales team loses track of follow-ups. The operations team enters data three times in different places. The owner works late consolidating reports manually. A custom web app is the answer when your workflow is too specific to be forced into tools built for everyone. The investment is indeed larger than a monthly SaaS subscription, but you instantly own a tool that fits your business exactly — with a fixed cost (not a subscription that rises every year) and data you 100% control. For startup founders, a custom web app often becomes the first MVP sold to customers — the product that ultimately decides whether your business idea sells or needs a pivot. We've helped clients build: an internal tool for a savings-and-loan cooperative, a contractor management dashboard, a clinic scheduling SaaS, a niche B2B marketplace, and many more we'd never find in any SaaS marketplace.

// what you get

Full deliverables.

Multi-role authentication (admin, user, guest, custom) with granular permissions
A per-role dashboard with data matched to each authority level
CRUD business modules per requirement (e.g.: orders, clients, products, transactions)
An internal API for connecting to a mobile app/3rd party (optional)
Notifications via email + WhatsApp for important events
Reports with filters + Excel/PDF export
Audit log: who edited what, and when
Automatic daily database backups + restore points
Internal documentation for your future developer team
Onboarding training for the user team
Hosting on a dedicated server with auto-scaling
3 months of bug-fix support at no extra cost

// our process

How we work.

01

Discovery & Scope Definition

An intensive 1-2 session workshop to map out the business process, user journey, and priority features. We split it into an MVP (must-have) and later iterations so you can launch sooner.

02

User Flow & Wireframe

Each role is mapped: what they see, what they can do, the flow from login to task completion. Low-fidelity wireframes are tested with prospective users before moving to visual design.

03

Sprint Build (2-weekly)

Development is split into 2-week sprints. At the end of each sprint we demo progress to you over a video call. Feedback goes into the backlog and is prioritized for the next sprint.

04

UAT (User Acceptance Testing)

Before launch, your user team tries the app on staging with real scenarios. Bugs, UX ambiguities, and additional needs are noted and resolved.

05

Launch & Handover

Deployment to production, team training, handover of technical documentation and repository access. 3 months of free bug-fix support. You also get the option of monthly maintenance if needed.

// technical approach

How it works under the hood.

A web app differs from a regular website: it has to hold up when used by dozens of users at once and stay responsive. Our approach: modular architecture from day one. The frontend and backend are separated with a clear API, so if you later need an installable mobile app, we simply reuse the same API. The database is designed with proper indexes and relations — not just dumped into a Google Sheet. Heavy operations (reports, exports, batch updates) are moved to background jobs so they don't block other users. Authentication uses industry standards (secure sessions or JWT) with proper password hashing. For scenarios that need real-time — chat, notifications, status updates — we use websockets or server-sent events. Every deployment goes through a pipeline that automatically runs tests before merging to production, so the chance of regression bugs is minimal. We also set up error monitoring (Sentry or equivalent) so bugs surfacing on the user side are known to us immediately, rather than waiting for you to report them.

// perfect for

Ideal if you...

  • Startup founders who need an MVP for market validation
  • Mid-sized businesses with a unique workflow not served by off-the-shelf SaaS
  • Internal teams looking to replace Excel/Sheets for daily operations
  • Consultants/agencies wanting to build a niche SaaS product for similar clients
  • Cooperatives, foundations, or institutions needing a member/transaction management system

// not a fit for

Maybe not you if...

  • ×Businesses that only need an informational website — use a company profile
  • ×Those needing standard e-commerce transactions — an online store is more efficient
  • ×Those without the capacity to manage/scale internal tools

// real example

KoperKita — A Web App for a Factory Workers' Cooperative

A textile-factory workers' cooperative in Karanganyar with 1,800 members used to manage their savings-and-loan operations with 3 separate Excel files and a manual cashier. Closing the books at month-end took 6 working days. We built a web app with member logins, a savings module (principal/mandatory/voluntary), loan applications with tiered approval, automatic interest calculation, and a board dashboard with real-time reports. Members can check their balance and apply for a loan from their phone, the board approves via the dashboard, and month-end book-closing became a 4-hour process.

outcome

Book-closing from 6 days to 4 hours, loan applications up 78%, member satisfaction up significantly

// faq · web app / saas

Common questions.

What's the monthly hosting cost for a web app?

It depends on scale. For an app with <500 active users, hosting is usually IDR 200-800k/month. For larger traffic, it can be IDR 1-5M/month with auto-scaling. We're transparent about the estimate from the proposal.

Do I own the source code?

Yes, 100%. After final payment, the repository and documentation are handed over to you. You can continue with any developer, or carry on maintenance with us.

How does this differ from buying off-the-shelf SaaS?

Off-the-shelf SaaS suits you if your workflow is standard and the features offered are enough. A custom web app is worth it when there's a specific process the SaaS doesn't have, or when the SaaS subscription cost for a large team is more expensive than a custom build.

Can a web app become a mobile app too?

Yes, via two routes: a Progressive Web App (a website installable from the browser, no Play Store) — low cost. Or a native iOS/Android app — higher cost but more optimal performance. Discuss it early so it can be planned into the architecture.

How long does a web app MVP usually take?

6-12 weeks for an MVP with 3-5 core modules. A complex app with many integrations can be 3-6 months. We always break it into 2-week sprints so progress is visible from the second week.

What if there's a bug after launch?

3 months of free bug-fix support after launch. Bugs arising within the agreed scope, we fix at no cost. After that, you can continue with a monthly maintenance package or call us on a per-need basis.

How is user data secured?

Passwords are hashed with bcrypt, sensitive data is encrypted at rest, connections use HTTPS, and database access is restricted to an IP whitelist. For apps handling personal/financial data, we also follow the OWASP Top 10 practices.

// ready to start?

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→ See examples of our work