SaaS Development in Japan
Full SaaS with auth, billing, and dashboard. Accepting customers in 15 days.
Trusted by founders at
How SaaS Development Works
Scope it
Define your SaaS model, features, pricing tiers, and user flows. We plan the architecture in 24 hours.
Build it
Full-stack SaaS development over 15 days. Auth, billing, and core features built together.
Ship it
Deployed with Stripe live. First customers can sign up and pay. Full source code handed off.
What's Included
Multi-tenant architecture
Proper SaaS architecture with tenant isolation, scalable from day one.
Stripe billing
Subscription plans, usage-based billing, invoices, and customer portal. Revenue-ready.
Admin dashboard
User management, subscription analytics, feature flags, and system health monitoring.
API layer
RESTful API with documentation. Ready for integrations, webhooks, and third-party connections.
SaaS Development in Japan: How We Compare
Tokyo, Seoul, Taipei, and Hong Kong are premium tech markets where agencies charge $100–250/hr with multi-month timelines. UniqueSide operates in the same APAC timezone with English-language Singapore contracts and predictable fixed pricing.
East Asian agencies charge premium rates with long timelines. UniqueSide ships in 15 days at a fixed price with English contracts.
| Typical East Asia Agency | UniqueSide | |
|---|---|---|
| Price | $40,000–120,000 | From $8,000 |
| Timeline | 3–6 months | 15 days |
| Timezone | Local (JST/KST) | Singapore (UTC+8) |
| Contracts | Local language | English, Singapore Pte. Ltd. |
| Code ownership | Varies | 100% yours |
Products We've Shipped
Every product below was built from scratch by UniqueSide. Designed, developed, and shipped.
StatsHub
Built the full analytics platform. Data ingestion, stats engine, and public-facing dashboard. Live at statshub.com
StatsHub.comScreenplayer
Built the full product from scratch. AI voice engine integration, screenplay parser, and web app. Live at screenplayer.ai
Screenplayer.aiValidateMySaaS
Built the entire SaaS platform. AI validation engine, user dashboard, and landing page. Live at validatemysaas.com
ValidateMySaaS.comVaga.ai
Built the full translation and transcription platform. File processing pipeline, dashboard, and API. Live at vaga.ai
Vaga.aiWhy Japan Founders Choose UniqueSide
15 days, not 15 weeks
Most agencies take 3–6 months. We ship in 15 days. Same quality, a fraction of the time.
Fixed price, no surprises
You know the price before we start. No hourly billing, no scope creep invoices.
You talk to the developer
No account managers, no middlemen. You work directly with the developers building your product.
You own everything
Full source code handoff. Your code, your IP, your infrastructure. We don’t lock you in.
International friendly
Singapore Pte. Ltd. incorporated. International wire transfers accepted. Clean contracts for global clients.
Built by a founder who's been in your shoes.
Manoj Ahirwar
Founder · Singapore
Serial founder with 10+ years engineering experience. Founded 5+ startups, shipped 40+ products, crossed $250K in revenue. We build MVPs for founders the same way we build our own products. Fast, focused, and without the agency bloat.
Our Team
Our team is a tight group of experienced full-stack developers who've shipped products across SaaS, mobile, and AI. No juniors learning on your project. Every developer on our team has 5+ years of production experience.
SaaS Development in Japan: FAQ
How much does SaaS Development cost in Japan?
SaaS Development in Japan typically costs from $8,000 USD. Fixed price, no hourly billing, no scope creep. You know the exact cost before we start.
How long does SaaS Development take in Japan?
Most SaaS builds take 3–6 months before you can accept a paying customer. UniqueSide ships with auth, billing, and dashboard ready in 15 days.
Do you work with founders in Japan?
Yes. We serve founders across Japan including Tokyo, Osaka. Singapore-incorporated, clean contracts, invoicing, and payments for international clients. Tell us what you’re building. We respond fast.
A note on our 15-day timeline
Our 15-day delivery applies to a focused MVP or prototype with core features. For example, a SaaS dashboard with auth, billing, and a core workflow can ship in 15 days. A full-scale product with complex integrations, multi-role permissions, and custom reporting will take longer. Most real-world applications fall somewhere in between. We scope every project individually and give you an honest timeline before we start. The goal is always the same: ship fast without cutting corners.
Other services in Japan
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