Twixt Time 4+

Accuracy tracker for watches

Coldflower Design Corp.

Designed for iPhone

    • 2.9 • 8 Ratings
    • $9.99

iPhone Screenshots


Twixt Time helps track the longterm accuracy of watches and clocks, by collecting & analyzing precisely timed snapshots of their dials.

Use Twixt Time to take a picture of the dial of an analog clock or watch. Each picture captures the exact time displayed on the dial. Twixt also notes the precise instant that the each snapshot was taken, by communicating with highly accurate NTP timeservers on the Internet.

A new snapshot of each timepiece can be added everyday. Using the information from 2 or more snapshots of the same timepiece, Twixt will calculate and show you how precisely the watch or clock is keeping time.

Twixt tracks the most recent rate, overall average rate, and cumulative gain or loss for each timepiece.

Supported dial configurations:

* Hour & minute hands with a central seconds hand
* Hour & minute hands with seconds displayed in a subdial
* Hour & minute hands only

Does Twixt Time work with GMT watches?

Yes. Twixt Time does not need to track the 24 hour hand of GMT watches to measure their precision. It is only necessary to track the hour, minute, and second hands. For GMT watches with central seconds, select the "central seconds" layout. For GMT watches with an offset or subdial seconds hand, select the "subdial seconds" layout. Twixt Time automatically monitors timezone changes based on the timezone setting of the iPhone or iPod touch.

Does Twixt Time work with chronograph watches?

Yes. The chronograph functions of a watch do not need to be measured to track the precision of the watch. Twixt Time tracks the precision of chronographs, as well as watches with other complications, in the exact same way that it tracks the precision of a normal, time-only watch. If the central seconds hand can be stopped and reset with the chronograph function, select the "subdial seconds" layout to track the small seconds hand with Twixt Time. If the central seconds hand continues to move when the chronograph is stopped, but the small seconds hand stops, select the "central seconds" layout to track the central seconds hand with Twixt Time. Most chronographs will use a subdial seconds layout.

Does Twixt Time work with watches that have an offset seconds hand?

Yes. For watches with a second hand that is not concentric with the hour and minute hands, select the "subdial seconds" layout.

Does Twixt Time work with quartz watches and clocks? Or other watches and clocks that are powered by batteries?

Yes. Twixt Time works with battery powered watches and clocks that display the time with an hour, minute, and/or second hand. It does not work with watches or clocks that only display the time digitally.


Twixt Time is not affiliated with or endorsed by any watch or clock brand. The timepieces shown are for demonstration purposes only.

What’s New

Version 1.71

Improved focus speed and better support for cameras on older devices.

Ratings and Reviews

2.9 out of 5
8 Ratings

8 Ratings

Pittsburgh J ,

Always says 12+ hrs even if it’s only a few seconds

The app was working well but now it always displays as the time advanced as 12+hrs when it may have only been a few seconds. Sad to see

ntvtxngop ,

Too soon?

I just got this app yesterday and have used it for three watches. Since it's only been one day it might be too soon to post a review. Nevertheless, here we go. The app looks great but is a little difficult to use. It's tough to drop the markers on the watch face without moving them a little, which of course impacts the accuracy of the app. Also I'm not sure it's accurate at all. I have one watch that I KNOW is fast, if anything, and the app shows it as being -30 secs/day after one day.

ExDroidUser ,

Used to be perfect, now it crashes constantly.

This app used to be amazing, however now it crashes every time you try to take a picture. Very disappointed! Get Tooltime instead. Developer seem unwilling to fix it.

Update September 23,2017:

App now crashes every time you try to resize a picture. You take the pic, app blows it way out of proportion (to the point it's nearly unusable), you zoom out to try and navigate m, and the damned thing crashes STILL!

Developer is cruel and uncaring, refuses to fix.

Developer Response ,

Hi ExDroidUser,

If you are continuing to encounter crashes, please get in touch at so we can get to the bottom of this for you.

App Privacy

The developer, Coldflower Design Corp., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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