# Herschel Quick Look vs Deep Sky Scanner

The clearest difference is update cadence: Deep Sky Scanner at every 4 days against Herschel Quick Look's every 36 months. Herschel Quick Look's advantage is iOS requirement (9.2 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Herschel Quick Look ships an update every 36 months, Deep Sky Scanner every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Herschel Quick Look | Deep Sky Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/herschel-quick-look/id476280092/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 2 MB | 2 MB |
| Requires iOS | **9.2** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ESA - European Space Agency](https://appshunter.io/developer/429660009) | [Chris Eddy](https://appshunter.io/developer/6809615073) |

## What reviewers say

### Herschel Quick Look

[App page](https://appshunter.io/ios/app/herschel-quick-look/id476280092)

Explore astronomical data from the Herschel Space Observatory. Search for celestial objects by name, coordinates, or observation ID to access processed infrared images and metadata. Understand the origins and evolution of stars and galaxies.

**Highlights:** Search by target name, coordinates, or observation ID, Access processed quick look images, View metadata, Explore data from the Herschel Space Observatory, Learn about star and galaxy evolution

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Deep Sky Scanner

[App page](https://appshunter.io/ios/app/deep-sky-scanner/id6809615071)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Herschel Quick Look free?

Herschel Quick Look is free to download, with no in-app purchases.

### Is Deep Sky Scanner free?

Deep Sky Scanner is free to download, with no in-app purchases.

### Do Herschel Quick Look or Deep Sky Scanner have ads?

Neither Herschel Quick Look nor Deep Sky Scanner shows ads.

### Which is updated more often, Herschel Quick Look or Deep Sky Scanner?

Herschel Quick Look ships an update every 36 months, and Deep Sky Scanner every 4 days. Most recently, Herschel Quick Look was updated on October 25, 2026 and Deep Sky Scanner on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*