A quick and easy time-lapse calculator with three modes. The default mode allows you to determine the shutter interval (time between shots) that is required to achieve a desired video clip length for a given recording duration.

The Time-lapse Calculator can also be set to calculate the necessary event duration (recording time) or target duration (video clip length) based on the other variables.

Most time-lapse utilities only allow you to enter the recording duration and shutter interval. Then they calculate the duration of the video clip that would result. That is rarely useful.

If you know how long you would like the final clip to be, your video frame rate, and how long you plan to continue capturing exposures to cover the event, then it is the shutter interval variable that you need to calculate. If you know what shutter interval you would like use and how long your video clip needs to be, it is the recording time that you need to calculate.

In addition to the intervalometer functions, the Time-lapse Calculator estimates the memory card storage capacity that will be required for RAW or high-quality JPG image files, based on the megapixel count of your camera.


• Calculate shutter interval, event duration (recording time), or target duration (video clip length)
• All standard NTSC, PAL, and film frame rates (FPS): 15, 23.976, 24, 25, 29.97, 30, 48, 50, 59.94, 60, or 120
• Memory card data estimator
• Home screen quick actions using 3D Touch: Shutter Interval, Event Duration, or Target Duration mode
• Copy to Clipboard with one touch (inputs and results)
• Maximum event duration (recording time): 999 days
• Clean, intuitive interface is easy to use while offering features for professional photographers and videographers
• Universal app for iPhone and iPad
• Responsive layout optimized for all device sizes and models, from iPhone SE through iPhone 8 Plus and iPhone X, and iPad mini up to iPad Pro

What’s New

Version 1.8.4

This app has been updated by Apple to use the latest Apple signing certificate.

• Improved compatibility with iPhone X
• Enabled landscape and upside down modes for iPad

Ratings and Reviews

5.0 out of 5
5 Ratings

5 Ratings

Ohhhhhhh!!! ,

Avoids having to do the maths

Very useful app for working out shutter interval etc on location without having to do the maths.

Developer Response ,

Whether math or maths, it‘s a great thing to avoid! :) Thanks for the review!

bangtwister ,


This time lapse calculator does what I want. Tried others and they all worked backwards. I know my FPS, Interval, and film length, but how long will be out in the field shooting? This App tells me, thank the lord! Well done!

App Privacy

The developer, Dax Mackenzie Roggio, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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