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Android Apps > Tools > TAI Clock and Converter
TAI Clock and Converter icon

TAI Clock and Converter

by Ton van Overbeek · Tools · Free
On Google Play since March 2011 · Data updated 2026-10-23

TAI Clock and Converter is made and published by Ton van Overbeek. AppBrain is an independent app data site and isn't affiliated with Ton van Overbeek. The app name, icon, screenshots and description belong to Ton van Overbeek and are shown as published on Google Play.

AppBrain's verdict

EstablishedLoved by users
Rating on Google Play
5.00
204 ratings
Installs
13 thousand
Last updated
August 17, 2023
Ads
No ads
Size
4.35 MB

TAI Clock and Converter has 13 thousand installs. Users love it: 5.0 stars from 204 ratings.

Official page on Google Play

Summary

TAI Clock and Converter delivers precise time conversions between TAI and UTC with multi-format displays. The app shows TAI as a 32-bit integer in seconds (hex and decimal) and HH:MM:SS, while UTC is presented in multiple date/time formats; it also includes widgets and a full-screen clock with optional SNTP time synchronization for improved accuracy. 10,000+ total downloads, 1 in the last 30 days, and a 5.00 rating from 204 users.

Pros & Cons

  • Precise TAI to UTC conversions across multiple formats
  • Interactive time editing via taps
  • Optional SNTP synchronization for improved accuracy
  • Widgets and a full-screen clock for quick time checks
  • Limited support for world clocks or weather integrations compared to broader clock apps
  • No explicit digital/analog display modes beyond the described formats
  • No multi-time-zone features beyond TAI/UTC representations documented

User feedback

Ratings and reviews on Google Play

Comments on TAI Clock and Converter for Android

★★★★☆ A Google User · Sep 18, 2011
Correct UTC available when Android clock off cquarksnow has obviously not read the description. When using SNTP updates you will always have the correct UTC even when your Android clock is not running correctly (as on my Nexus One).
★★★★★ Anthony Bruni · Sep 15, 2021
I want to add that when I tested this app to the short wave radio stations WWV and WWVH I have found this app refreshingly accurate and precise in artificial time. Of course with Internet connection. The time does not noticeably vary. It's accurate and precise testing it against a variety of accurate and precise artificial time pieces. It's a personal favorite app for accurate and precise artificial time with reliable Internet connection.
★☆☆☆☆ A Google User · Sep 6, 2011
Not UTC but Android clock (often different) As most Android phones like HTC EVO 4G, 3D, Motorola Photon and the like to have a device clock that's 15 seconds fast (Android bug 5485), what the application shows is your device time as "UTC", when it's often GPS. Note that Samsung Android phones do not have the issue, as the firmware compensates for the bug.

Google Play Rating history and histogram

200
0
0
0
0

Store listing

By Ton van Overbeek, from Google Play

“Converts between TAI (International Atomic Time) and UTC (aka GMT).”

TAI Clock and Converter Screenshot 1 of 6
TAI Clock and Converter Screenshot 2 of 6
TAI Clock and Converter Screenshot 3 of 6
TAI Clock and Converter Screenshot 4 of 6
TAI Clock and Converter Screenshot 5 of 6
TAI Clock and Converter Screenshot 6 of 6
Screenshots by Ton van Overbeek, from the Google Play listing
Description by Ton van Overbeek Written by the developer, not by AppBrain. Click to read.
Show both/Converts between TAI (International Atomic Time) and UTC (Coordinated Universal Time aka GMT).

TAI is shown in 3 buttons as a 32 bit integer in seconds in both hexadecimal and decimal and as HH:MM:SS.
UTC is shown in 3 buttons:
- YYYY-MM-DD (year, month, day)
- YYYY-DDD (year, dayofyear (0-365/366)
- HH:MM:SS (hour, minute, second)

Tapping any button stops the running clock and allows you to edit it and show the corresponding time in the other representations.

A long press on either one of the TAI buttons or the UTC HH:MM:SS button starts the corresponding full screen clock. There is a setting to keep the screen on while displaying a full screen clock.

The running clock uses the system clock. The accuracy of the clock can optionally be improved by synchronizing with an internet time server using the SNTP protocol. The frequency of the updates can be set to Never, Once, Every 10 minutes, Every hour and Every 6 hours. Obviously this requires a working internet connection. SNTP updates are only active when the app is in the foreground.

Home screen widgets and a lock screen widget are also included.
Widgets are resizable for Android >= 4.1.

Recent changes:
Updated for Android 13
Official page on Google Play

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
2
App size
4.35 MB
Needs Android
2.1+
Content rating
Everyone

Technologies used by TAI Clock and Converter

5 permissions · 2 libraries
Subscribe to see full permission and library details
Trust & Safety: The app requests INTERNET, ACCESS_NETWORK_STATE, FOREGROUND_SERVICE, POST_NOTIFICATIONS, and DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION. These permissions support online time synchronization, foreground tasks, and user notifications. There are no location or personal-data permissions indicated, making it a low-risk utility focused on time conversion and display.

Releases

Updates seen on Google Play
Version
3.5
Launched
March 2011
  • Aug 17, 2023UpdateVersion 3.5
  • Oct 17, 2020UpdateVersion 3.4.1
  • Aug 11, 2018UpdateVersion 3.4
  • Feb 24, 2017Installs10,000+ installs
  • Dec 28, 2016UpdateVersion 3.3
Show all changes Show fewer

Alternatives

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Installs

Tracked by AppBrain
Last 30 days
1
Play install range
10+ thousand
Launched
March 2011

Installs over time

TAI Clock and Converter has been installed 13 thousand times. Over the past 30 days, it has been installed 1 times.

Rankings

Google Play top charts

Google Play Rankings for TAI Clock and Converter

This app is not ranked

About the app and developer

About TAI Clock and Converter

TAI Clock and Converter is a tools app developed by Ton van Overbeek.

Install Statistics

TAI Clock and Converter has been downloaded 13 thousand times. In the last 30 days, the app was downloaded 1 times.

User Ratings

TAI Clock and Converter is rated 5.00 out of 5 stars. The rating is based on 200 ratings.

App Information

TAI Clock and Converter is freely available from Google Play. The APK size is 4.35 MB. The latest APK version available is 3.5. The last update was on August 17, 2023.

Technical Requirements

TAI Clock and Converter requires Android 2.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since March 2011.

App Performance Report

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Developer information for Ton van Overbeek

Ton van Overbeek

tvoverbeek@gmail.com

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Address:

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Frequently asked questions about TAI Clock and Converter

Is TAI Clock and Converter free?

Yes. TAI Clock and Converter is free on Google Play.

Is TAI Clock and Converter still available?

Yes. TAI Clock and Converter is on Google Play, and the last update we saw was on August 17, 2023.

Does TAI Clock and Converter contain ads?

No. Google Play does not list TAI Clock and Converter as containing ads.

What Android version does TAI Clock and Converter require?

TAI Clock and Converter runs on Android 2.1 and higher.

How large is TAI Clock and Converter?

TAI Clock and Converter is 4.35 MB.

Is TAI Clock and Converter suitable for children?

Google Play rates the content of TAI Clock and Converter as suitable for everyone.

How many times has TAI Clock and Converter been installed?

Google Play lists 10,000+ installs for TAI Clock and Converter.

How do people rate TAI Clock and Converter?

TAI Clock and Converter scores 5.00 out of 5 stars, from 204 ratings on Google Play.

Who made TAI Clock and Converter?

TAI Clock and Converter was developed by Ton van Overbeek. It is listed in the tools category on Google Play.

What are the best alternatives to TAI Clock and Converter?

People looking at TAI Clock and Converter also look at these tools apps: AtomicClock: Exact NTP Time, World Clock Widget & Weather, World Clock, UTC Clock, tCalc - a time calculator.

Share TAI Clock and Converter

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Overview Alternatives History Reviews Rankings Technology
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