SaaS development that stays cheap to run
For founders who want a SaaS that costs little while users are few and keeps working as they grow. I plan it, build it, and hand you the code.
13+ years shipping web products. First Cursor Ambassador in Indonesia. I built and run RankMySEO, a rank tracking SaaS.
Looking for a SaaS development company?
If you searched for a SaaS development company, you found one senior developer instead of an agency. I plan, build, and launch your SaaS myself, and I design it to cost little to run from the first user. That means caching, background jobs, and lean database queries on hosting that scales from zero. The expected monthly running cost goes into the written plan before I write any code.
With me, the person on the call is the person writing the code, so nothing gets lost in between. The trade-off is capacity. One developer can only run a few builds at once, so I tell you my start date up front.
Where the running cost of a SaaS goes
Four lines make up most monthly bills. Here is how I keep each one small.
Compute
Every request that renders a page or runs an API route uses CPU time. I cache pages that look the same for every visitor, render them once, and push heavy work into background jobs and queues.
Database
Slow queries keep functions running longer and push you onto a bigger database plan. I index the queries the app actually runs and stop fetching rows nobody reads.
AI tokens
Model calls are billed per token, so one chatty feature can cost more than the hosting. I cache answers, send simple tasks to smaller models, and cap spend per user.
Third-party services
Auth, email, search, and monitoring each add a monthly line. I pick services whose pricing fits early traffic and note which ones you can swap out later.
Caching does most of the work. I explain how it behaves in Next.js caching on Vercel.
Scale from zero without a rewrite
On day one, the web app runs on infrastructure that scales to zero. While you have few users, the bill follows the requests you get, and no server sits idle all month. When traffic grows, more capacity starts on its own and the code stays the same.
Steady background work is different. A worker that runs all day is often cheaper on a small VPS, so I split the two when the numbers say so. I compare the options for your app and write the expected monthly cost into the plan.
A typical low-cost setup
- The web app on serverless hosting such as Vercel, which scales to zero when nobody is using it
- Managed Postgres, sized to the load you have now and easy to move up a plan
- Steady background workers on a small VPS when that costs less than running them as functions
- AI calls behind a cache and a per-user limit, so usage cannot outrun the subscription price
More on each option: how I keep a Next.js bill on Vercel in check, and running Next.js on a cheap VPS (in Indonesian).
AI features that do not eat your margin
AI can turn into the biggest line on a SaaS bill, because every model call is paid per token. I add AI where it saves your users time and keep these rules in the code.
- Call a model only when the feature needs one, and use plain code for the rest
- Cache answers to repeated questions, so you pay for each one once
- Send simple tasks to smaller, cheaper models and keep large models for hard ones
- Cap AI spend per user and per plan, so one heavy account cannot eat its own subscription
How I wire models into existing products is on my AI integration page.
SaaS development services: what you get
The parts every SaaS needs before the first customer pays. The plan lists which ones your version one includes.
I build with Cursor and AI-assisted development, which shortens the time spent on routine code. I review every change myself, so the codebase stays readable for the next developer.
SaaS development cost: build cost and running cost
A SaaS has two bills. The build cost is what you pay me to plan and write the product. It depends on how many features ship in version one, which integrations you need, and whether data moves over from an old system.
The running cost is what you pay every month after launch: hosting, database, AI tokens, and third-party services. It depends on how much work each request does and how much traffic you get. That part is set by how the code is written, which is why I plan it before the build.
I scope the build after a call and estimate the running cost in the written plan. For a wider view of what drives developer rates, read the cost to hire a Next.js developer.
Proof: a SaaS I built and run
RankMySEO
RankMySEO is a hosted rank tracker that stores daily Google ranking history for each keyword. It has Overview, Keywords, Competitors, and Insights views. Rank checks run as background jobs, so the dashboard stays responsive while they work.
I proved it on the diurusin.id demo, and the public beta opened on 31 August 2026. There is also a public open-source toolkit. The story is in Introducing RankMySEO.
This site
This site runs on Vercel with ISR caching. When I publish a post, a webhook refreshes the pages that changed, so the cache only rebuilds when content changes.
Is custom SaaS development right for you?
Good fit
- You have a SaaS idea and want one person accountable from plan to launch
- You want to know the expected monthly running cost before the build starts
- Your current app has a hosting or AI bill that grows faster than your revenue
- You want the code in your repository, readable by the next developer
Look elsewhere
- You need a large team working in parallel from the first week
- You want a fixed price from a one-line brief
- Your product is a native mobile app first and a web app later
Building a product where the AI feature is the whole point? Start with AI MVP development.
From scoping call to launch
Scoping call
We go through the product, who pays for it, and what version one must do.
Written plan
Stack, features, build price, and the expected monthly running cost.
Build
A demo on a preview link every week, so you can change course early.
Launch
Domain, billing, email, and monitoring switched to live.
Handoff or support
Docs and a walkthrough for your team, or I stay on for ongoing work.
SaaS guides and related services
Introducing RankMySEO
The rank tracking SaaS I built and run, and why I built it.
RankMySEO: hosted or open source
When the hosted SaaS fits and when the open-source toolkit is enough.
Next.js caching on Vercel
How caching decides how much work each request does, and what it costs.
Next.js on a cheap VPS
Running Next.js on a small VPS instead of serverless hosting. Written in Indonesian.
AI MVP development
For products where the AI feature is the product.
PHP API development
A PHP backend or API behind a Next.js front end.
SaaS development FAQ
How much does SaaS development cost?+
I scope each build after a call, because a billing dashboard and a multi-tenant product with AI are different work. The written plan has the build price and the expected monthly running cost. You see both numbers before I write any code.
Are you a SaaS development company or a freelancer?+
I am one independent developer, and I have worked this way since 2015. The person on every call is the person writing the code. If your project needs more people than one developer can be, I will say so on the scoping call.
Do you offer SaaS MVP development?+
Yes. An MVP is the smallest version that real customers can sign up for and pay for. I build it on the same low-cost setup as a full product, so you can grow from it without a rewrite.
How do you keep hosting cheap when traffic grows?+
Pages that look the same for everyone are cached, so more visitors mostly means more cache hits. Heavy work runs in background jobs, and the database has indexes for the queries the app runs. Serverless hosting adds capacity on its own when traffic grows.
Can you add AI features without AI costs eating the margin?+
Yes. I call models only where the feature needs one, cache repeated answers, use smaller models for simple tasks, and set a spend limit per user. The plan estimates the AI cost alongside hosting.
Do you do custom SaaS development, or start from a template?+
Custom SaaS development. I use well-known libraries for auth, billing, and email, so your budget goes to the features that make your product different. Every line lives in your repository and belongs to you.
Tell me what your SaaS needs to do
Send a short description of the product and who pays for it. I reply with questions or a first take on the stack and what will drive the running cost. If an existing tool already does the job, I will tell you.