Decompile iOS App

I'm looking for a skilled developer to help recover the lost source code of my old iOS app.

Key Requirements:
- Decompile the app to recover source code.
- Work with limited documentation (basic notes available).
- No access to original development environment or tools.

Ideal Skills:
- Experience with iOS app decompilation.
- Familiarity with iOS development and architecture.
- Ability to work with minimal documentation and notes.

Please provide examples of similar work done and estimated timelines.