MaraTapeCal makes calibrating an analog tape machine fast and easy. Learn how to calibrate an analog tape machine just like the Mara Machines technicians do! Offered by Mara Machines (the authority on MCI tape machine restoration) MaraTapeCal is a step by step guide to calibrating analog tape machines of all types. Simply answer questions about tape formulation, tape speed and MRL reference level, then the app automatically calculates bias level and elevation level taking out the guesswork or confusing charts.
In app purchases include ‘personal shopper’ links to the same equipment Mara Machine technicians use.

You’ll be a pro in no time with MaraTapeCal!

-step by step guide made for beginners and seasoned pros alike
-photos of actual tape machines that highlight which buttons to push
-photos of actual tape machines that highlight which pot to adjust
-in depth alignment technique that will allow your tape machine to sound it’s best
-quick alignment ‘touch up’ option between full calibrations
- Personal Shopper available via in-app purchase to help you quickly source calibration tools if you need help finding them

What’s New

Version 1.06

"Personal Shopper" in app purchase available to help you quickly source our preferred tools for aligning your tape machine.

Ratings and Reviews

3.0 out of 5
4 Ratings

4 Ratings

t stu ,

$25 for some inaccurate pictures

Please don’t make something an app that doesn’t need to be. And don’t charge $25 for it - it comes off as greedy. My assistant and intern have to buy it just to calibrate my tape machine. That’s $75 right there. What? I paid ~ $6k for my machine, so it’s be cool if you just had a little PDF on your site.

The fact the app is inaccurate is maddening. The pics are wrong and not my machine at all. It makes the calibration process more confusing - defeating the purpose of the app. 👎🏻

Developer Response ,

t stu,

Sorry to hear you're disappointed. Our feedback on the app's price has been very positive. The app saves users hundreds of dollars in technician fees and allows an interactive step by step guide to calibrating a tape machine. The user inputs (tape speed, MRL, etc) that tailor each calibration walk through cannot be offered in a PDF. We split the photos between the two Mara Machine models we offer, and there are in-app videos to explain this. Most people have been thrilled at how simple the app is to use, and its value. Perhaps try it again!


Chris Mara
179.5 MB

Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Personal Shopper $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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