Ratio Calc! App Reviews

I use this all the time. Best of the dozens of similar apps Ive tried.

This app is about as good as it gets. Very functional, without any silliness or distractions. I use it every time I race or tune.

Ottima pratica e veloce

Best gear ratio app, hands down!

Very nicely done & easy to use! I was very surprised to find all the Custom Works cars included - even the new Dominator 2. The tables are great for cross referencing ratios rollout! Great App!!!

Works Great. Very Helpful. Works Great at the Race Track!!!! Later HB

very nice

this app is great, everything you need it to do. The car database is amazing, its so easy to get more cars added you just email in app and days later they add it. In app updates is another major plus!

Great app. rollout chart is great, my only complaint is i would like to select gear pitch for each car. I use 64p on pan cars and 48 on dirt oval

Really easy to use

Very good but need to set gear pitch for each car.

This app will be a big help at the track. I would say that anyone that races and that has an iPhone should get this app

Great app, I only wish it had More

This app allows quick and easy calculations to be made at the track when you need that little extra to beat the competition.

Great app and excellent user interface. This is almost a killer must have app. It needs input for battery used and motor specs, then you can calculate speed base on output. You already have rollout, just missing a few pieces.

I just down loaded this app. Very easy to navigate. It would be nice to have mod 1 pitch. Also a speed chart for comparison. Other than that this is an awesome app for the track. Keep updates coming.

This is a great app. Very easy to use.

Great App.

Had all three of my cars. Very helpful.

Great app for finding FDR. Has a bug on ipad at moment where I cannot hit "done", it does not appear on screen, after setting pinion and spur size, so cannot get out of this mode. Otherwise it does everything we need for finding gear ratios on our RC cars. Thanks for making this app. :-)