The time it takes to develop a mobile app in Singapore depends on various factors, including the complexity of the app, the platform(s) it will be developed for (e.g. Android or iOS), the development methodology (such as Agile or Waterfall), the team size, and the level of experience of the developers.
In general, developing a simple app can take anywhere from 2-4 months, while a more complex app can take 6-12 months or more. However, these timelines can vary significantly based on the factors mentioned above.
To give you a more accurate estimate, it's important to work with an experienced app development team who can assess your specific requirements and provide a more detailed timeline and cost estimate. They can also provide guidance on the best development methodology and platform(s) to use for your app.
It's important to keep in mind that developing a mobile app is not a one-time project but an ongoing process that requires regular updates and maintenance. So, be sure to budget for ongoing maintenance and support costs as well.