# ScopeTool vs QUARCS

The clearest difference is review sentiment: ScopeTool at 50% against QUARCS's 0%. ScopeTool also leads on rating (3.8 vs 3.0) and ratings volume (4 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ScopeTool holds the better App Store score, 3.8 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 50% of ScopeTool's written reviews are positive against 0% of QUARCS's.

ScopeTool ships an update every 9 months, QUARCS every 6 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ScopeTool | QUARCS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/scopetool/id826428287/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/quarcs/id6479396546/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 6 MB | 30 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [H Crossley](https://appshunter.io/developer/826428290) | [Light Speed Vision(Beijing) Co., Ltd](https://appshunter.io/developer/1511662353) |

## What reviewers say

### ScopeTool

[App page](https://appshunter.io/ios/app/scopetool/id826428287)

This app assists with telescope setup and alignment, providing tools like a compass, level, and calculators for celestial objects. It allows manual or GPS-based location input and offers customizable tool visibility for use in low light.

**Highlights:** Compass and level, Polaris hour angle calculator, Jupiter and Saturn moon positions, Red/white flashlight with timer, Manual or GPS location input, Customizable tool visibility

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ScopeTool free?

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

### Is QUARCS free?

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

### Which has better reviews, ScopeTool or QUARCS?

ScopeTool is rated higher. ScopeTool averages 3.8 out of 5 from 4 ratings, while QUARCS averages 3.0 from 1 ratings.

### Do ScopeTool or QUARCS have ads?

Neither ScopeTool nor QUARCS shows ads.

### Which is updated more often, ScopeTool or QUARCS?

ScopeTool ships an update every 9 months, and QUARCS every 6 months. Most recently, ScopeTool was updated on October 24, 2026 and QUARCS on October 6, 2026.

---

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