[2] Steingruber competed at the European Championships in Berlin and finished ninth in the all-around and sixth on vault.

[14] After the Olympics, she competed at the Swiss Cup alongside Claudio Capelli, and they won the silver medal behind the German team.

[15] In December, she competed at the Stuttgart World Cup and won bronze in the all-around behind Elizabeth Price and Elisabeth Seitz with a total score of 55.565.

[16] Steingruber competed at the La Roche-sur-Yon World Cup in France and placed first on the vault and uneven bars with scores of 13.433 and 13.600, respectively.

[17] Later that month, she competed at the City of Jesolo Trophy in March and placed eighth in the all-around, with a total score of 55.550.

[21][22][23] After the World Championships, Steingruber won the silver medal in the all-around at the Arthur Gander Memorial behind Larisa Iordache.

[24] Then at the Swiss Cup, she competed with Claudio Capelli, and they won the bronze medal behind Romania and Germany.

[33] At the World Championships, Steingruber qualified for the all-around final and placed fifteenth with a total score of 55.132.

[34] She also tied for fifth place in the vault final with Great Britain's Claudia Fragapane, with an average score of 14.716.

[36] Then at the Swiss Cup, she finished fourth with teammate Claudio Capelli after injuring her foot on her vault.

[43] She won the bronze medal on the floor with a score of 14.466 behind Claudia Fragapane of Great Britain and Ksenia Afanasyeva of Russia.

[45] In June, she competed at the 2015 European Games held in Baku, along with teammates Jessica Diacci and Caterina Barloggio, and they finished sixth in the team competition.

[59] In event finals, Steingruber won her third European vault title with an average score of 14.983, just 0.050 ahead of Ellie Downie.

[63] Then at the Chemnitz Friendly, she helped the Swiss team finish fourth, and she won the gold medal in the all-around.

[64] At the Olympic Games in Rio de Janeiro, Steingruber was chosen to be the flag bearer for Switzerland at the opening ceremony.

[67][68] In the vault final, she won the bronze medal with an average of 15.216, 0.037 behind the silver medalist Maria Paseka of Russia.

[71] Steingruber returned to competition at the Swiss Championships and won the all-around gold medal by nearly three points.

[73] During the event finals, she won her first World medal with the bronze on vault by finishing behind Maria Paseka and Jade Carey.

[77] At the Sainté Gym Cup in early July, she injured herself during her floor routine and fractured her Tibia, as well as tearing her ACL and meniscus, and she missed the rest of the season.

[78] Steingruber made her comeback at the Swiss Championships in September, over a year after sustaining her injury, where she won the all-around with a score of 53.100.

[79] Afterwards, she was named to the team to compete at the World Championships in Stuttgart, Germany, alongside Ilaria Käslin, Stenfanie Siegenthaler, Anny Wu, and Caterina Barloggio.