# QUARCS vs Celestron LABS

The clearest difference is update cadence: Celestron LABS at every 2 months against QUARCS's every 6 months. Celestron LABS also leads on iOS requirement (12.0 vs 14.0). 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.

QUARCS ships an update every 6 months, Celestron LABS every 2 months. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | QUARCS | Celestron LABS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/quarcs/id6479396546/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 30 MB | 15 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Light Speed Vision(Beijing) Co., Ltd](https://appshunter.io/developer/1511662353) | [Shenzhen Joyhonest Technology Co., Ltd](https://appshunter.io/developer/1472724044) |

## What reviewers say

### QUARCS

[App page](https://appshunter.io/ios/app/quarcs/id6479396546)

This open-source software kit enables remote astrophotography capture via Wi-Fi and computer. It offers comprehensive control over telescope mounts, cameras, autoguiding, and electric focusers, integrating with Stellarium for sky mapping.

**Highlights:** Remote capture via Wi-Fi, Computer remote capture via LAN, Mount control, Camera control, Autoguiding, Electric focuser control, Stellarium skymap integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Celestron LABS

[App page](https://appshunter.io/ios/app/celestron-labs/id6695728437)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QUARCS free?

QUARCS is free to download, with no in-app purchases.

### Is Celestron LABS free?

Celestron LABS is free to download, with no in-app purchases.

### Do QUARCS or Celestron LABS have ads?

Neither QUARCS nor Celestron LABS shows ads.

### Which is updated more often, QUARCS or Celestron LABS?

QUARCS ships an update every 6 months, and Celestron LABS every 2 months. Most recently, QUARCS was updated on October 6, 2026 and Celestron LABS on October 11, 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.*