Lesson 6 of 6 · 25 min

App Handover and Selling a Maintenance Retainer

Hand over cleanly, then keep earning by looking after the app.

In this lesson1. A clean handover2. Why apps need a retainer3. Add AI agents after launch4. Worked example: a three-level retainer5. Common handover mistakes

A clean handover

At handover the client should receive, in your brand: the live app, admin access, a short guide for each user type, the list of connections and accounts, and where the code and designs are kept if they own them. Record a short walkthrough video. Agree the warranty period during which bugs are fixed at no charge, matching what your build partner gives you.

  • Live app and admin access
  • User guides in your brand
  • Accounts and connections list
  • Code and design location if owned
  • Walkthrough video
  • Warranty period

Why apps need a retainer

Apps need care after launch: phone operating system updates, security patches, small changes, monitoring and backups. Offer a monthly retainer that covers a set amount of support and small changes, monitoring and a monthly report. Price it from your partner's maintenance cost plus your time and margin. Retainers turn one project into recurring revenue.

Add AI agents after launch

Once the app is live, there is often a next job an AI agent can take on: answering customer questions, chasing payments or checking documents. Adding an agent to an app you delivered is a natural upgrade, and partners of platforms such as XDQ AgentOS can offer it under their own brand.

Worked example: a three-level retainer

After launching an order portal, an agency offered three retainers: basic covered monitoring, security updates and a monthly report; standard added a few hours of small changes; premium added a quarterly review and priority fixes. Each was priced from the build partner's maintenance cost plus the agency's time and margin.

The client chose standard. Six months later the agency proposed an AI agent to answer order questions on WhatsApp, which became the next project.

Common handover mistakes

A messy handover makes the client feel the project is unfinished, even if the app works well.

  • No admin access or account list
  • Guides in the partner's brand
  • No warranty period agreed
  • Not offering any ongoing care
Key takeaways
  • Hand over access, guides, accounts and a walkthrough video.
  • Match your warranty to your partner's.
  • Offer a monthly retainer for updates, security and small changes.
  • Use the live app as a base for an AI agent upgrade.
Try it

Write your handover checklist and a retainer offer with three levels. Note one AI agent job that could be added to the app after launch.

Check your understanding

1. What should a handover include?

2. Why do apps need a retainer?

3. What is a natural upgrade after launch?

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Templates from our playbooks

Copy ready templates with when to use each one and why it works.

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