Ratio Calc! App Reviews

Great place to keep notes and gearing for all your cars. Enough models for every occasion!!! Store multiple cars and compare final drive ratios or roll out for accurate records. Will definitely save money on spent motors and speed controls due to over gearing.

I have the app for iphone but I've recently switched to android and would love to use this on my new phone for my rc racing.

In a sea of mish-mashed, garbage R/C related apps, this is an aesthetic oasis. It does exactly what you downloaded it for and doesn't give you a migraine in the process. What more do you want? Hmm. Maybe a watch app? Oh yeah, the dude made that too. Excellent work.

App needs to be updated!

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

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

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.

Had all three of my cars. Very helpful.

This a fantastic app to have. Just got back into dirt oval racing and finding out rollout and what-if rollouts is great. Saves time and makes it simple.

Great app but please update app to include new kits :-) thanks

Works really well in Dirt Oval applications. Very simple to use.

You've done a great job with this app !

Does exactly what you need it to do; quickly figure out gear ratios and rollout. Saves your individual cars and their settings. Buy this app for gearing, you won't be disappointed.

I wouldn't leave home without it. Gone are all my charts, calipers and notes. Good job guys!

Great app for on the track setups, it's an absolute must for the average to the pro racer!!!

Been using this app for years. A must have. They add new cars very quick.

Best gear ratio app, hands down!

Well done! I love the amount of cars you have in the library. Great tool!