Apps Like E-Tuner 4+ for iPhone and iPad
E-Tuner 4+ screenshots
Ranked alternatives
Showing 261–280 of 1,000 ranked alternatives.





Lambda Tuner
Johan Bjors
PID controller tuning for industry processes.
The app calculates PID controller parameters using the Lambda method for self-regulating and integrating loops. Users describe their process with four values and select a Lambda value to set controller reaction speed.

Engine Link - OBD II diagnosis
K SOLUTION LLC
Vehicle performance and diagnostics tool.
The app turns an iPhone into a vehicle performance and diagnostics tool. It displays real-time car data, reads and clears fault codes, and offers customizable gauges.

tuner Y -metronome, amp & more
Yasar Bozdag
Tune instruments with chromatic precision
TunerY allows users to tune guitars, basses, ukuleles, and other instruments with a chromatic offering 0.01Hz accuracy. It includes a metronome and a personal amplifier with reverb, delay, and distortion effects.

Violin Tuner Professional
Pedro Daniel Macalupu Cumpen
Tune with precise frequency display
Tune strings with real-time frequency display in Hz. Calibrate to multiple A frequencies. Load tuning instantly for quick adjustments. Provides visual feedback with LED indicators. Offers intuitive interface for easy use.

Progression Ignition Tuner v2
Progression Ignition, LLC
Edit timing, connect via Bluetooth, adjust RPM
Tuning connects via Bluetooth to distributors. Enter parameters to create timing tables. Adjust timing, RPM, and MAP breakpoints using a touchscreen editor. Make changes while engine is on or off. Save and load multiple tables.








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