Chromatic Tuner
There are chromatic tuner VSTs.
I’d prefer to just have a test tone to tune by ear with
There are test tone VSTi’s. 
Your right, Renoise’s mda TestTone is really a wonder, thanks very much. It can be used as a synth or for creating percussive kits as well as tuning. Erase that request for a chromatic tuner.
For whomever will find this useful
taken from piano frequency:
A0 27.5 A0# 29.135 B0 30.868
C1 32.703 C1# 34.648 D1 36.708 D1# 38.891 E1 41.203 F1 43.654 F1# 46.249 G1 48.999 G1# 51.913 A1 55.000 A1# 58.270 B1 61.735
C2 65.406 C2# 69.296 D2 73.416 D2# 77.782 E2 82.407 F2 87.307 F2# 92.499 G2 97.999 G2# 103.83 A2 110.00 A2# 116.54 B2 123.47
C3 130.81 C3# 138.59 D3 146.83 D3# 155.56 E3 164.81 F3 174.61 F3# 185.00 G3 196.00 G3# 207.65 A3 220.00 A3# 233.08 B3 246.94
C4 261.63 C4# 277.18 D4 293.66 D4# 311.13 E4 329.63 F4 349.23 F4# 369.99 G4 392.00 G4# 415.30 A4 440.00 A4# 466.16 B4 493.88
C5 523.25 C5# 554.37 D 587.33 D5# 622.25 E5 659.25 F5 698.46 F5# 739.99 G5 783.99 G5# 830.61 A5 880.00 A5# 932.33 B5 987.77
C6 1046.5 C6# 1108.7 D6 1174.7 D6# 1244.5 E6 1318.5 F6 1396.9 F6# 1480.0 G6 1568.0 G6# 1661.2 A6 1760.0 A6# 1864.7 B6 1979.5
C7 2093.0 C7# 2217.5 D7 2349.3 D7# 2489.0 E7 2637.0 F7 2793.8 F7# 2960.0 G7 3136.0 G7# 3322.4 A7 3520.0 A7# 3729.3 B7 3951.1
C8 4186.0
Broad definitions:
• Sub-bass: between 20 and 60 Hz
In this case the sound is primarily felt, rather than heard.
• Bass: between 60 and 200 Hz
The biggest part of the rhythmic energy is to be found in this region. The usual bass tone translates into 80Hz to 640 Hz.
• Bass-medium: between 200 Hz and 1.5 kHz
The first harmonic frequencies of most instruments lie here. If too many corrections are applied to this region, the sounds tend to become too nasal and tiring.
• High-medium: between 1.5 and 4 kHz
All the important harmonics are to be found here, specially, if we’re talking about vocal music.
• High: between 4 and 10 kHz
This is the realm of clarity and sound definition. This and the high-medium area compose key parts of the all-important “midrange.” Corrections made to an instrument or voice around 5 kHz will increase its presence.
• Ultra-high: between 10 and 20 kHz
additional link for Mac:
“Music Math is a freeware which converts music values (BPM, transpose, Delay, Samples, ms, Hz, Timestretch %, Notes ). Music-Math has 7 conversion functions: Tempo Change, Transpose, Delay, Tap Tempo, Samples, Notes and SMPTE:”
http://lost-memories.com/softs/