Cant access PFUsers from Parse - ios

Question

I am new to parse and ios development.
I want to use Parse for User management of an IOS app. With the help of documentation (https://parse.com/docs/ios/guide#users-signing-up) I was able to signup some sample users and I have the following in Parse app.
Then I want to retrieve all users (or query for specific) with following documentation help.
var query = PFUser.query()
query.whereKey("gender", equalTo:"female")
var girls = query.findObjects()
I was expected to receive an array of size 3 but surprisingly didn't receive any.
Later I figured out I can user API console feature of Parse and tried use it to receive PFUser objects. I received zero results.
Later I tried with sample table and I was successfully add, retrieve Objects to the table.
Not sure If I need to anything special for me to use PFUser.

Answer 1

I have tested using API Console and its working on my side. I have one entry in User table having gender = male.
I fired following curl query to retry all the users
curl -X GET \
-H "X-Parse-Application-Id: <#your-application-key>" \
-H "X-Parse-REST-API-Key: <#your-rest-api-key>" \
-G \
https://api.parse.com/1/users
Result from the above query is:
{"results":[{"gender":"male","createdAt":"2015-12-10T06:00:40.368Z","email":"sam07it22#gmail.com","objectId":"1KbxpYgeUb","updatedAt":"2015-12-10T06:01:32.885Z","username":"sam07it22#gmail.com"}]}
Now, I'm going to add Condition in above query to fetch records having gender = female. As per data expected result should have zero records
For gender = female
curl -X GET \
-H "X-Parse-Application-Id: <#your-application-key>" \
-H "X-Parse-REST-API-Key: <#your-rest-api-key>" \
-G \
--data-urlencode 'where={"gender":"female"}' \
https://api.parse.com/1/users
Output:
{"results":[]}
For gender = male
curl -X GET \
-H "X-Parse-Application-Id: <#your-application-key>" \
-H "X-Parse-REST-API-Key: <#your-rest-api-key>" \
-G \
--data-urlencode 'where={"gender":"male"}' \
https://api.parse.com/1/users
Output:
{"results":[{"gender":"male","createdAt":"2015-12-10T06:00:40.368Z","email":"sam07it22#gmail.com","objectId":"1KbxpYgeUb","updatedAt":"2015-12-10T06:01:32.885Z","username":"sam07it22#gmail.com"}]}
NOTE:
Don't forget to replace your API KEY and REST API KEY

Answer 2

ACL permissions has done the trick. ACL permissions has to be "public read" for them to be accessible. Here is more info about ACL in parse https://parse.com/docs/ios/guide#security-object-level-access-control