What determines the cost?
Development costs tend to reflect the work involved: how many people contribute and for how long. That work includes clarifying requirements, designing the app, and testing it, as well as building screens.
More requirements can mean more implementation and testing. Even with the same number of screens, permission rules and connections to other systems can change the amount of work needed.
Why costs can add up
Defining every requirement at the start can take time. Designing features whose use is still unclear expands the scope that people need to review and agree on.
Building authentication, permissions, and notifications from scratch each time adds work. Teams need to design and test those common features alongside the features specific to your business.
A contract that requires a lump-sum payment upfront can create a larger funding burden at launch. You pay the development cost before the app is in use.
Ways to reduce the work and cost
Starting with a minimum set of features can narrow the initial scope. Build the essential workflow first, then use what you learn from actual use to decide what to add.
A shared development platform can reduce custom work by reusing features such as authentication and permissions. Check how well it supports your requirements before choosing it.
Compare the initial payment with the fees that apply once the app is in use. Payment timing affects when you need funds, so confirm the terms before signing.
How ZERO-SaaS offers ¥0 upfront development
ZERO-SaaS provides authentication, permissions, notifications, and logs in its Common Development Platform (SDK). The AI Coding Agent assists with requirements, implementation, testing, and documentation. Combining that assistance with reusable features reduces the development work involved.
Initial development is free. Internal business apps use the Monthly Billing Model, with fees based on the number of users.
The monthly pricing example starts at ¥1,000 per account, or ¥30,000 per month for 30 users.
For customer-facing or OEM products, the Revenue Share Model charges a portion of app revenue. The specific arrangement and fees are determined through individual consultation.
The estimated development period is 2 to 6 weeks. Timing varies with requirements and complexity.
What is free?
Initial development is free. Usage involves monthly or other fees, with terms determined through individual consultation.
Frequently asked questions
What pricing models are available?
The Monthly Billing Model and Revenue Share Model are available. Internal business apps are billed by user count, while customer-facing or OEM products use a fee based on a portion of revenue.
How long does development take?
The estimate is 2 to 6 weeks, depending on requirements and complexity. The process covers Fit Assessment, requirements, implementation and testing, staging (pre-release checks), release, and operation and expansion.
Can I try a demo app for free?
Yes. No registration is required. Answer questions to generate an app tailored to your workflow. The demo is a starting point for discussing ideas, internal proposals, and potential costs.
Check whether this fits your app
Try your workflow in a demo, then discuss the features and user count you need. You can also compare development approaches before deciding.