# Date Formatter — Test ISO 8601 date time format

> Developer tool for testing and understanding date/time format strings across locales. (iPhone/iPad app by Honghao Zhang.)

- Source: https://appshunter.io/ios/app/date-formatter/id949590319 (this page in markdown: same URL + `.md`)
- Developer: [Honghao Zhang](https://appshunter.io/developer/837207887)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 13 MB
- Languages: American English
- Released: 2014-12-18
- Data updated: 2026-06-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/date-formatter/id949590319/reviews.md

## What is Date Formatter?

Have you ever felt a headache when dealing with date/time format string? When things come to a localized date/time format, it's even more difficult.

Date Formatter is a handy tool for the developer who is dealing with date/time format string. It makes your life with date format easier! With this tool, you can test any format string with any date/time and see the result simultaneously. Never tweak format strings in code and run the program again and again.

Features:
- Set any date/time
- Set different time zones
- Support more than 689 locales (you can test date strings in any country your iOS device support)
- Quick guide with examples
- Detailed reference with the symbol, number of symbols, examples and descriptions

Now, speed up with your work with date time string and localization!

## Key features

- Test any date/time
- Set different time zones
- Support for 689+ locales
- Quick guide with examples
- Detailed reference for format symbols


## Frequently asked questions about Date Formatter

### What is Date Formatter used for?

Date Formatter is a utility app designed for developers to test and understand date and time format strings. It allows you to input any date and time, set different time zones, and see how format strings render across more than 689 locales.

### Is Date Formatter free to use?

Yes, Date Formatter is completely free to download and use. There are no in-app purchases or advertisements, making it a straightforward utility for developers.

### What devices does Date Formatter support?

Date Formatter is available for iPhone, iPad, and iPod touch devices. It is designed to run on iOS.

### How many locales does Date Formatter support?

Date Formatter supports over 689 locales, allowing you to test date and time strings in virtually any country your iOS device supports for accurate localization.

### When was Date Formatter last updated?

The latest version of Date Formatter was released on August 26, 2019. While it's an older update, the core functionality for date and time formatting remains relevant for developers.

### What is the age rating for Date Formatter?

Date Formatter has an age rating of 4+, indicating it is suitable for users of all ages. Its content is appropriate for general audiences.

### Does Date Formatter have ads?

No, Date Formatter does not contain any advertisements. It is a completely ad-free application.

### Can I test ISO 8601 dates with Date Formatter?

Yes, Date Formatter is specifically designed to help test ISO 8601 date-time formats and other localized date/time string representations. You can input various formats and see their parsed results.

## Version history (last 3 releases)

### 1.2.1 — 2019-08-26

Minor bugs fix

### 1.2 — 2019-08-01

Optimized for iPhone Xs, Xs Max

### 1.1.1 — 2014-12-18

No release notes.

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## More apps by Honghao Zhang

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All apps by Honghao Zhang: https://appshunter.io/developer/837207887

## Related topics

[formatter](https://appshunter.io/ios/topics/formatter)

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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 2026-06-24.*