Google puts no such restrictions on apps for devices running its Android software, but given the increasing rivalry between Facebook and Google in social networking, Facebook is not in full control of its destiny there either.
This needs more of that kind of underpinning: the increasing rivalry between the vampy lead actor Sandra Charlie Russelll) and the mousey stage manager (Nancy Wallinger), who unexpectedly has to take over her role, is nicely done but could be developed more.
This has led to increasing rivalry between smuggling gangs and to the emergence of bajadores, basically pirates who steal other smugglers' cargo (i.e., people).
Also, the unexpected death in Moscow in 1956 of Bolesław Bierut, the PZPR First Secretary (known as the "Stalin of Poland"), led to increased rivalry between various factions of Polish communists and to growing tensions in Polish society, culminating in the Poznań 1956 protests (also known as June '56).
An increasing rivalry and ideological differences between the Sierra and the Costa usually focused on the two leading cities Quito, the capital, in the Sierra, and Guayaquil, the country's principal port, in the Costa.
Since 2008, three streams of instability have dominated world affairs: the economic crisis; social unrest among a thwarted young generation that produced the Arab spring and the Occupy movements; and increased diplomatic rivalry between Russia, its proxies and the west.
"In an effort to increase the rivalry between Toronto FC and our closest geographical opponents, the Columbus Crew, a quick jaunt of about 700km, the MLS awards a trophy called the Trillium Cup to the side with the better record between our league meetings," writes Mike.
"We need to increase the rivalry".
The rivalry between the two increased towards the latter half of the 1870s.
But from 1640 onwards, with the arrival of the Dutch, rivalry between princes, and the increasing brutality of the Portuguese governors, led to disorder.
Despite the rivalry between the two companies, Telefónica eventually increased its offer to 8.55 billion euros from 8.1 billion, a deal that eventually secured the backing of América Móvil.
