# Astronomy Tools HD — Convert and Calculate Distance

> Convert and calculate astronomical distances with multiple units and real-time updates. (iPhone/iPad app by Ian Annase.)

- Source: https://appshunter.io/ios/app/astronomy-tools-hd/id1207963750 (this page in markdown: same URL + `.md`)
- Developer: [Ian Annase](https://appshunter.io/developer/1204138903)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 4.70/5 from 138 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 57 MB
- Languages: American English
- Released: 2017-02-23
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/astronomy-tools-hd/id1207963750/reviews.md

## What is Astronomy Tools HD?

Convert, calculate, and measure astronomical distances with this tool. The distances are changed in real time as you edit the fields. The units included are parsecs, light years, astronomical units, miles, and kilometers. Angles are measured with arc seconds.

Features:
• Convert between parsecs, light years, astronomical units, miles and kilometers in real time.
• Calculate the distance to an astronomical object using arc seconds.
• Determine angle in arc seconds from the distance of an object. 
• Reset button for fast edits.
• 100 HD Pictures of Galaxies with names and distances.
• Information tab with graphics to show how distances are calculated in astronomy.

Distances Compared to 1 Light Year:
• 0.306601 Parsecs
• 63241.1 AU
• 5,878,499,810,000 Miles
• 9,460,528,400,000 Kilometers

## Key features

- Real-time distance conversion
- Calculate distance using arc seconds
- Determine angle from distance
- HD galaxy pictures
- Informational graphics on calculations
- Reset button for quick edits

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Version | $4.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/astronomy-tools-hd/id1207963750/reviews.md

### 5/5 — Outstanding app

*2023-06-13*

Five. Stars all the way.

### 5/5 — RJ

*2020-07-22, version 6.0*

Nice

### 1/5 — Not worth the effort

*2019-10-09, version 6.0*

It took about 3 mins. To figure out to delete it

## Frequently asked questions about Astronomy Tools HD

### What units does Astronomy Tools HD use for distance conversion?

Astronomy Tools HD supports conversion between parsecs, light years, astronomical units (AU), miles, and kilometers. These conversions are updated in real-time as you edit the values.

### How does Astronomy Tools HD calculate distances?

The app can calculate the distance to an astronomical object using arc seconds, and conversely, determine the angle in arc seconds from a given distance. It also provides an information tab with graphics to illustrate these astronomical distance calculations.

### Does Astronomy Tools HD have ads?

The provided data does not specify if Astronomy Tools HD contains advertisements. However, it is listed as a free application.

### What devices is Astronomy Tools HD compatible with?

Astronomy Tools HD is designed for Apple devices, specifically supporting iPhone, iPad, and iPod. It is rated for ages 4 and up.

### How often is Astronomy Tools HD updated?

The latest version of Astronomy Tools HD is 6.0, which was released on April 20, 2018. The app was initially released on February 23, 2017.

### What is the user rating for Astronomy Tools HD?

Astronomy Tools HD has a strong user rating of 4.7 stars, based on 138 ratings. This indicates a high level of user satisfaction with the app's functionality and utility.

### Does Astronomy Tools HD offer in-app purchases?

No, Astronomy Tools HD does not feature any in-app purchases. The application is entirely free to download and use.

### What kind of visual content does Astronomy Tools HD include?

Astronomy Tools HD includes 100 HD pictures of various galaxies. Each image is accompanied by its name and distance, enhancing the educational and visual experience.

## Version history (last 5 releases)

### 6.0 — 2018-04-20

This app has been updated by Apple to display the Apple Watch app icon.

• Updated for iOS 11
• Minor bug fixes

### 5.0 — 2017-06-21

- Promotional Text
- Improved User Experience

### 4.0 — 2017-06-09

- Improved User Experience

### 3.0 — 2017-03-17

- Updated design
- Information on how to calculate distances in astronomy
- Galaxies from a variety of a catalogs with their distances

### 2.0 — 2017-03-08

- Calculate the distance to astronomical objects using arc seconds
- Calculate the angle in arc seconds using light years or parsecs
- Updated look and feel

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## More apps by Ian Annase

- [College GPA Tools](https://appshunter.io/ios/app/college-gpa-tools/id1204138904)
- [Astronomy Star Type Calculator](https://appshunter.io/ios/app/astronomy-star-type-calculator/id1205157821)
- [Road Trip Gas Cost](https://appshunter.io/ios/app/road-trip-gas-cost/id1205329795)
- [Salary Calculator Pro](https://appshunter.io/ios/app/salary-calculator-pro/id1205384061)

All apps by Ian Annase: https://appshunter.io/developer/1204138903

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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 2026-06-10.*