Short answer: A typical business app takes 8–20 weeks from idea to store, across 6 stages: requirements, planning, design, development, testing and launch. Launches most often stall on accounts: a Google Play organization account needs a D-U-N-S number, which can take up to 30 days, so start in week 1.
A bakery chain wanted a member ordering app and was told it would be live "in 3 months." In week 12 the app was ready, but nobody had applied for Apple or Google developer accounts. Applying as a company required a D-U-N-S number, which took another 3 weeks, and the first submission was rejected for missing a demo login. A Mother's Day launch slipped into June. What owners fear most is not waiting, but not knowing where the project stands.
App development timeline: how long three project types take
Bottom line: simple apps take about 8–10 weeks, member and payment apps 12–16 weeks, and apps with a back office and system integrations 16–20+ weeks.
| Project type | Typical features | Idea to launch |
|---|---|---|
| Showcase / utility app | Brand info, forms, push notifications | 8–10 weeks |
| Membership / booking app | Accounts, points, bookings, payments | 12–16 weeks |
| Transaction / system app | Orders, admin panel, ERP or POS integration | 16–20+ weeks |
These ranges include a 1–2 week buffer for store launch. Account setup can run in parallel with development.
The 6-stage app development process: deliverables and owner checkpoints
Bottom line: every stage should produce something you can see, so six sign-offs tell you exactly where the project is.
| Stage | Time | Deliverable | What you should check |
|---|---|---|---|
| 1. Requirements | 1–2 weeks | Feature list and priorities | Which features ship in version 1 and which wait |
| 2. Planning | 1–2 weeks | Screen flow, schedule, acceptance criteria | Who is the weekly contact and how fast they reply |
| 3. Design | 2–3 weeks | Clickable prototype | Tap through it on a phone |
| 4. Development | 4–10 weeks | A test build every 2 weeks | Install and use the test build yourself |
| 5. Testing | 1–3 weeks | Test log and issue list | 3–5 people each on iPhone and Android |
| 6. Launch | 1–2 weeks | Store listing and approved release | Store name, screenshots and privacy policy are correct |
The app store launch process: 4 things owners must prepare
Bottom line: review itself is rarely the slow part; developer accounts and listing materials are, so start both during requirements.
- Company developer accounts: the Apple Developer Program costs US$99 per year and, for organizations, requires a D-U-N-S number, a company-domain email and a working website. A Google Play developer account is a one-time US$25.
- D-U-N-S number: a Google Play organization account cannot be created without one, and getting it can take up to 30 days. Apple notes up to 2 more business days to sync after issuance. Your company name and address must match official records.
- Google Play closed testing: personal accounts created after November 13, 2023 need 12 testers opted in for 14 consecutive days before production. A company account avoids this wait.
- Listing and review: store name, description, screenshots, a privacy policy URL and a demo login for reviewers. Apple says it reviews about 50% of submissions within 24 hours and 90% within 48 hours; Google Play review for new accounts usually takes 7 days or less.
Common delays in the app development process and how to avoid them
Bottom line: most app delays come from waiting on decisions, materials and accounts, not slow developers.
- Scope creep: each mid-project feature adds 1–2 weeks. Keep a "version 2" list.
- Late materials: copy, photos and prices that arrive 2 weeks late delay launch by 2 weeks. Deliver them before design ends.
- Late account applications: D-U-N-S plus account review can take 3–5 weeks. Apply in week 1.
- Rejections: missing demo logins, missing privacy details, or sign-up without in-app account deletion. Check each before submitting.
- Busy contact person: 5-day reply delays across 6 stages add a month. Assign someone with 4 hours a week.
Checklist: which tier will your app project fall into?
Bottom line: if 3 or more of these apply, plan for 16–20 weeks and start the developer account process in week 1.
- Users log in, or pay inside the app
- It connects to your POS, ERP or website member data
- Staff need an admin panel
- iPhone and Android must launch the same day
- There is a fixed launch date, such as a campaign or event
- Your company has no D-U-N-S number or developer account yet
FAQ
How long does app development take?
Most business apps take 8–20 weeks; simple apps 8–10 weeks, apps with payments and a back office 16–20+ weeks.
How long does app store review take?
Apple says 90% of submissions are reviewed within 48 hours; Google Play review for new accounts usually takes 7 days or less.
Should the developer account be under my company or a person?
Your company. The store shows it as the seller, and you will not need to transfer the app if you change vendors.
What if my app is rejected?
Fix what the rejection notice lists and resubmit; most apps are back within a week. Missing demo logins or privacy details are common causes.
Next step: get a free app launch timeline
ScriptWalker (a Taiwan-based Laravel/Flutter custom development studio) builds iPhone and Android apps from one Flutter codebase and helps you set up developer accounts and store listings from the requirements stage. Share your features and target date, and within 30 minutes we will map out your app development timeline and launch countdown:
- Email: [email protected]
- Phone: 0916-224-047
- LINE: @ufv9089p