# Time Difference Calc - TDCalc — Quick world time converter

> Global time zone converter for cities worldwide. (iPhone/iPad app by icot.)

- Source: https://appshunter.io/ios/app/time-difference-calc-tdcalc/id556426003 (this page in markdown: same URL + `.md`)
- Developer: [icot](https://appshunter.io/developer/315124358)
- Category: Travel, Utilities
- Price: Free
- Rating: 4.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 1 MB
- Languages: American English, Japanese
- Released: 2012-09-05
- Data updated: 2026-11-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/time-difference-calc-tdcalc/id556426003/reviews.md

## What is Time Difference Calc?

TDCalc is a simple app for quickly converting time differences across cities worldwide.

Just set the date and time for your source city, and see the local time for each registered city updated in real time. Perfect for scheduling business trips and international meetings.

Key Features:
- Supports 90+ time zones worldwide
- Search cities by name (Japanese & English)
- Country flag display for instant city identification
- Add and browse cities on a map
- "Now" button to quickly reset to current time
- Clear previous/next day indicators for cross-date time differences
- Copy and share conversion results as text
- Siri Shortcuts support
- Dark mode support

## Key features

- Supports 90+ time zones
- Search cities by name
- Map view of cities
- Real-time time updates
- Copy and share results
- Siri Shortcuts support
- Dark mode

## Is Time Difference Calc safe?

Not enough ratings yet to assess Time Difference Calc.

## Is Time Difference Calc legit?

Time Difference Calc - TDCalc appears to be a legitimate app. The AppsHunter Legitimacy Score for Time Difference Calc is 90 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/time-difference-calc-tdcalc/id556426003/reviews.md

### 5/5 — いい感じです

*2014-05-06*

シンプルで使いやすく便利です

### 4/5 — Amazingly convenient.

*2012-11-08*

Not very solid interface, but you will be aware it's so handy.

## Frequently asked questions about Time Difference Calc

### Does TDCalc have ads?

No, TDCalc is ad-free, allowing for an uninterrupted user experience.

### What devices support TDCalc?

TDCalc is available on iPhone and iPad devices.

### How many time zones does TDCalc support?

TDCalc supports over 90 time zones worldwide, making it comprehensive for global time calculations.

### Can I search for cities in different languages?

Yes, you can search for cities by name in both Japanese and English within TDCalc.

### Is TDCalc suitable for young children?

TDCalc has an age rating of 4+, indicating it is appropriate for children and adults.

### How often is TDCalc updated?

The app was last updated on October 29, 2026, suggesting a history of updates, though the exact frequency is not specified.

### Can I share time difference results from TDCalc?

Yes, TDCalc allows you to copy and share conversion results as text, facilitating easy communication of time differences.

### What is the user rating for TDCalc?

TDCalc has a rating of 4.0 stars from 1 rating, indicating a generally positive user reception based on available data.

## Version history (last 5 releases)

### 2.1.0 — 2026-10-29

v2.1.0 — Home Screen Widgets

- Added home screen widgets (small, medium, and large sizes)
- Check registered cities' current time without opening the app
- Widget updates instantly when you add or remove cities

### 2.0.0 — 2026-10-28

TDCalc 2.0.0 — Completely redesigned with SwiftUI

- Modern new design
- Enhanced city search (350+ city names)
- Country flags for easy city identification
- Add and browse cities on a map
- "Now" button to reset to current time
- Siri Shortcuts support
- Dark mode support

### 1.0.8 — 2017-01-17

- Ads introduced.

### 1.0.7 — 2016-10-10

- Ads removed.
- Design changed.

### 1.0.6 — 2015-04-30

- Design improvement

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All apps by icot: https://appshunter.io/developer/315124358

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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 2026-11-01.*