Manage your mobile app development project with a Gantt chart. Track iOS and Android workstreams, QA, app store review, and launch milestones. Free online tool.
Mobile app development looks simpler than it is. You're often building the same product twice—iOS and Android—plus a backend API, plus web admin tools, plus app store assets and review cycles that are completely out of your control. The App Store review process alone can add 1–7 days of uncertainty to any release. Google Play is faster but has its own quirks.
Without a mobile app development Gantt chart, teams discover these compounding delays at the worst time: days before a promised launch. The Gantt chart surfaces the sequencing problems early—when there's still time to adjust.
gantt-chart.io is free and requires no account. Build your mobile project timeline in the browser and share it with your whole team.
[App Name] - Mobile Development TimelineUser flow mapping and wireframes — Week 1-2UI design in Figma — Week 2-4Design review and approval — Week 4Design handoff to engineering — Week 4Design QA during development — Week 6-8 (parallel)API schema design — Week 1-2Authentication and user accounts — Week 2-3Core API endpoints — Week 3-6Push notification service — Week 4-5Analytics and error tracking setup — Week 5-6API documentation — Week 6Load testing — Week 7iOS:
Project setup and architecture — Week 3Core screens and navigation — Week 3-6API integration — Week 5-7Push notifications — Week 6-7App icon and launch screen — Week 7TestFlight beta build — Week 8Android:
Project setup and architecture — Week 3Core screens and navigation — Week 3-6API integration — Week 5-7Push notifications — Week 6-7App icon and splash screen — Week 7Internal testing track build — Week 8Internal QA on simulator/emulator — Week 7Physical device testing (iOS + Android) — Week 8Beta user testing (TestFlight / Play beta) — Week 8-9Bug fixes from beta feedback — Week 9Performance profiling — Week 9Accessibility audit — Week 9App store screenshots and preview video — Week 9App store listing copy and keywords — Week 9Privacy policy and terms of service — Week 9Submit to App Store review — Week 10 (mark as milestone)Submit to Google Play — Week 10Buffer: App Store review period — Week 10-11 (1-7 days, plan for worst case)Launch day — Week 11 (milestone)Apple's review timeline is the most unpredictable variable in any iOS launch plan. Build your Gantt chart with two scenarios:
Mark the review period as a task with no assigned owner—you can't speed it up. The buffer prevents your whole launch plan from collapsing on a rejection.
If Apple rejects the build, add a Rejection: fix and resubmit task. Each resubmission adds another 1–3 days. Budget for one rejection.
Starting both platforms simultaneously without backend. If the API isn't ready, both iOS and Android teams are blocked or building against mock data. Let backend lead by 1–2 weeks.
No device testing budget. Emulators don't catch everything. Schedule time on real devices—especially for older OS versions where crashes are common.
App store assets as an afterthought. Screenshots, preview videos, and localized descriptions take more time than expected. Start them in Week 7, not the day before submission.
| Phase | Workstream | Duration |
|-------|-----------|---------|
| Design | Wireframes + UI | Week 1-4 |
| Backend | API + Auth | Week 1-7 |
| iOS | Build + integrate | Week 3-8 |
| Android | Build + integrate | Week 3-8 |
| QA | Device testing + beta | Week 8-10 |
| Release | Store submission + review | Week 10-12 |
Free at gantt-chart.io—no account, shareable link.