# GPSTime — GPS and UTC Time converter

> Converts between GPS Time and UTC with support for leap seconds and multiple formats. (iPhone/iPad app by Gimin Kim.)

- Source: https://appshunter.io/ios/app/gpstime/id6751814380 (this page in markdown: same URL + `.md`)
- Developer: [Gimin Kim](https://appshunter.io/developer/1836958729)
- Category: Utilities, Navigation
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 18.5 · 25 MB
- Languages: American English
- Released: 2025-09-02
- Data updated: 2026-06-02
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/gpstime/id6751814380/reviews.md

## What is GPSTime?

GPSTime is a time conversion tool designed for researchers, students, and GPS/GNSS professionals. Time conversion is a frequent challenge in GNSS work—whether parsing broadcast ephemerides, handling IGS product names, or aligning observation data. GPSTime streamlines this process by providing accurate conversions between GPS Time and UTC, with full support for leap seconds.

The app supports a wide range of commonly used formats, including:
	•	GPS Week + Time of Week (TOW)
	•	GPS Week + Day of Week (DOW)
	•	Gregorian calendar (YYYY-MM-DD HH:MM:SS)
	•	Year + Day of Year (DOY)
	•	Modified Julian Date (MJD)

Using historical leap-second data, GPSTime ensures correct handling of the GPS–UTC offset for both past and present times. GPSTime is also capable of saving your conversion history (up to 200 logs in the History tab) and lets you configure default conversion scenarios to match your most frequently used time system and format.

With a clean interface and multiple input/output options, GPSTime is an essential companion for GNSS research, education, and precise timekeeping tasks.

## Key features

- GPS Time to UTC conversion
- Support for leap seconds
- Multiple time format support
- Conversion history saving
- Configurable default scenarios
- Clean interface


## Frequently asked questions about GPSTime

### What time formats does GPSTime support?

GPSTime supports GPS Week + Time of Week (TOW), GPS Week + Day of Week (DOW), Gregorian calendar (YYYY-MM-DD HH:MM:SS), Year + Day of Year (DOY), and Modified Julian Date (MJD).

### Does GPSTime handle leap seconds correctly?

Yes, GPSTime is designed to accurately handle leap seconds, ensuring correct GPS–UTC offset for past and present times using historical leap-second data.

### Can I save my conversion history in GPSTime?

Yes, GPSTime allows you to save your conversion history, with up to 200 logs available in the History tab.

### What devices is GPSTime available on?

GPSTime is available on Mac, iPhone, and iPad devices.

### How often is GPSTime updated?

The latest version, 1.0.1, was released on 2025-09-15, indicating recent development and support.

### What is the age rating for GPSTime?

GPSTime has an age rating of 4+, making it suitable for a wide range of users.

### Can I configure default conversion settings in GPSTime?

Yes, GPSTime lets you configure default conversion scenarios to match your most frequently used time system and format for efficiency.

### Does GPSTime have ads?

No, GPSTime does not contain advertisements.

## Version history (last 2 releases)

### 1.0.1 — 2025-09-15

[New updates]
- Enabled Liquid Glass tab buttons for iOS 26 (or later) users
- Enabled Pull-to-Refresh in Convert tab
- Enabled conversion from Blank Fields (e.g. when user press the 'x' button on the input fields)
- Automatically scroll-down to the result after user press "Convert" button

### 1.0 — 2025-09-03

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-02.*