hello Yilmaz,
let we start your work and move together for pour long terms relationship and here is our agreed milestone plan
1- Payment shall be in 5 parts of which 20% + (5 % freelancer.com commission fee Excluded) Release after accept your project.
2- 20% shall be due upon once app will completed 30%.
3- 20% shall be due upon once app will completed more than 50%.
4- 20% shall be due upon once app will completed more than 80%.
5- Final 20% shall be due once app will fully completed with tested and uploaded on /apple store and provide you final source code.
you release after accept your project this 20% 700 usd + 5 5 freelancer fee excluded 175 usd total 875 usd . please create milestone and then after release it.
Regards
Verma