FL Studio - FL Studio Mobile (versiion 3.3.1) just got a more tuneful with the addition of two free plugins, Auto-Pitch and a Guitar/Instrument Tuner. Customers can update for free, or check
Pitcher
LockOn - Guitar Tuner – SubMission Audio
Tuner - Effect Plugin
Toneforge® Menace – Joey Sturgis Tones
Best clip-on guitar tuners 2023: Headstock and soundhole tuners | MusicRadar
Amazon.com: Neewer 6 Pieces Guitar Machine Heads Knobs Guitar String Tuning Pegs Machine Head Tuners for Electric or Acoustic Guitar (3 for Left + 3 for Right) : Musical Instruments
10 Best FREE Tuner VST Plugins & Apps in 2023! ( PC & Mac )