Installation Identification for Family Applications

One or more computer-readable non-transitory storage media embodying software that is operable when executed to:

• broadcast, by a second application that is a member of a plurality of family applications and is installed on a client device, a communication comprising a second hashed installation identifier and a second timestamp, the second timestamp indicating a time that the second application was installed on the client device;
• receive, by the second application, a response from a first application, wherein the first application is a member of the plurality of family applications, and wherein the response comprises a first hashed installation identifier and a first timestamp indicating a time that the first application was installed on the client device;
• compare, by the second application, the second timestamp to the first timestamp;
• save, by the second application, the first hashed installation identifier as a family identifier if the comparing reveals that the first application was installed on the client device before the second application was installed on the client device.

A system comprising:

• one or more processors;
• and a memory coupled to the processors comprising instructions executable by the processors, the processors being operable when executing the instructions to:
• broadcast, by a second application that is a member of a plurality of family applications and is installed on a client device, a communication comprising a second hashed installation identifier and a second timestamp, the second timestamp indicating a time that the second application was installed on the client device;
• receive, by the second application, a response from a first application, wherein the first application is a member of the plurality of family applications, and wherein the response comprises a first hashed installation identifier and a first timestamp indicating a time that the first application was installed on the client device;
• compare, by the second application, the second timestamp to the first timestamp;
• save, by the second application, the first hashed installation identifier as a family identifier if the comparing reveals that the first application was installed on the client device before the second application was installed on the client device.