Don't ask 'Can you build this?' Ask 'How will you build this?' The difference matters. You need to expose their strategic thinking.
1. 'How do you handle scope creep during the development phase?'
Why: This reveals their project management maturity. If they don't have a strict change request process, your budget will explode.
2. 'Can you explain your approach to AI in app personalization?'
Why: Personalization is the standard now. If they don't have a strategy for using data to tailor the user experience, they are behind the curve.
3. 'What is your disaster recovery plan if the app crashes post-launch?'
Why: downtime kills revenue. You need to know their SLA (Service Level Agreement) for critical bugs.
4. 'Do you write automated tests or rely solely on manual testing?'
Why: Manual testing misses things. Automated testing, especially when we discuss AI in software testing, is non-negotiable for scaling.
5. 'How do you ensure IP protection and data security?'
Why: You need to own your code. Clear contracts prevent legal nightmares later.
6. 'Have you built apps in [Your Specific Industry] before?'
Why: Domain expertise beats technical expertise. A healthcare dev knows HIPAA; a gaming dev might not.
7. 'What is your communication frequency and methodology?'
Why: Agile isn't just a buzzword. You need weekly sprints and demos, not monthly updates.
8. 'Can I speak to a past client who had a project go wrong?'
Why: Everyone brags about successes. How they fixed a failure tells you about their integrity.
9. 'How do you handle app store rejection?'
Why: Apple and Google are strict. Your partner needs a plan B if the app is flagged during review.
10. 'What is your strategy for implementing mobile app development trends like AR or voice search?'
Why: You want an app that lasts five years, not five months. They must be forward-thinking.