As you want to get the details that syllabus for IAS and IPS is same or not so here is the information of the same for you:

Civil Service Exam is conducted for recruitment of IPS as well as IAS officers. So, the syllabus of the exam for both services are same.

The Civil Service examination has been divided into three stages
Civil Service Aptitude Test (CSAT)
Main Examination
Interview

CSAT Syllabus:
Paper 1
Current events of national and international importance
History of India and Indian national movement
Indian and World Geography- physical, social, economic geography of India and the world
Indian Polity and governance – constitution, political system, panchayati raj, public policy, Rights issues, etc.
Economic and social development – sustainable development, poverty, inclusion, demographics, social sector initiatives etc.
General issues on environmental ecology, bio-diversity and climate change
General science.

Paper 2
Comprehension
Interpersonal skills including communication skills
Logical reasoning and analytical ability
Decision making and problem solving
General mental ability
Basic numeracy (numbers and their relations, orders of magnitude etc. (Class X level),
Data interpretation (charts, graphs, tables, data sufficiency etc. –Class X level)
English language comprehension skills (Class X level)

Syllabus for the Main exam
The compulsory subjects for the Main exam are one Indian language, English, Essay and General studies.

As far as optional papers are concerned, you will have to choose any two subjects out of the following list

Agriculture Mathematics, Animal Husbandry & Veterinary Science, Mechanical Engineering Botany, Medical Science, Chemistry, Philosophy, Civil Engineering, Physics, Commerce, Political Science ,Economics ,Psychology Electrical Engineering Public Administration, Geography, Sociology, Geology, Statistics, Indian, History, Zoology, Law.