# HoppAR vs Cassi Telescope Viewer

The clearest difference is in-app purchases: Cassi Telescope Viewer at none against HoppAR's 14. Cassi Telescope Viewer also leads on update cadence (every 5 days vs every 2 months) and rating (5.0 vs 4.8). HoppAR's advantage is ratings volume (579 vs 1) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. HoppAR sells 14 in-app purchases, starting at $7.99 per year. Cassi Telescope Viewer asks for nothing beyond the download.

Cassi Telescope Viewer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: HoppAR has 579 ratings behind it against 1, so its average is the more settled of the two.

HoppAR ships an update every 2 months, Cassi Telescope Viewer every 5 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HoppAR | Cassi Telescope Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (579 ratings)](https://appshunter.io/ios/app/hoppar/id1497739070/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cassi-telescope-viewer/id6759762743/reviews)** |
| Number of ratings | **579** | 1 |
| Positive reviews | 85.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 372 MB | 1 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Josef Grunig](https://appshunter.io/developer/1497739069) | [Cassi Telescope LLC](https://appshunter.io/developer/1880533492) |

## What reviewers say

### HoppAR

[App page](https://appshunter.io/ios/app/hoppar/id1497739070)

Experience rocket launches and landings in augmented reality. Control thrust vectoring, perform engine test fires, and customize rockets with your own colors. Explore a variety of real spacecraft and space mission scenarios.

**Highlights:** Augmented reality rocket launches, Manual thrust vectoring control, Rocket engine test fires, Customizable rocket coloring, Variety of real spacecraft models, Entry, Descent, and Landing simulations, Indoor and Outdoor AR modes

**Features:** Family Sharing

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HoppAR Supporter | $7.99 | per year |
| FALCON HEAVY | $0.99 | one-time |
| STARSHIP Belly Flop | $0.99 | one-time |
| SUPER HEAVY | $0.99 | one-time |
| DELTA IV HEAVY | $0.99 | one-time |
| PERSEVERANCE | $0.99 | one-time |
| DRONESHIP OCISLY | $0.99 | one-time |
| NEW SHEPARD | $0.99 | one-time |
| ARIANE 5 | $0.99 | one-time |
| ARTEMIS I | $0.99 | one-time |
| SOYUZ | $0.99 | one-time |
| ELECTRON | $0.99 | one-time |
| SATURN V | $1.99 | one-time |
| Control Feature | $2.99 | one-time |

**What reviewers like**

- 🎮 Excellent AR simulation and gameplay mechanics
- 🎨 High-quality rocket models and realistic designs
- 🎵 Great music and audio (with some caveats)
- 📱 Well-made and polished app overall
- 🌟 Immersive and satisfying launch experience

**What reviewers complain about**

- 💰 Premium rockets locked behind paywall
- 🐛 AR functionality issues on some devices
- 📱 Orientation requirement (vertical/horizontal) frustrating
- ⏱️ Limited gameplay - rockets auto-launch and auto-land
- 🎬 Short 5-second clips lack player control

**Reported bugs**

- Black screen on horizontal surface scanning
- Camera not working on certain devices
- App won't open or crashes on startup
- Gray screen display issue
- iPad AR compatibility problems

**Requested features**

- Space Shuttle addition
- Manual control for Falcon 9 and Dragon
- Free access to premium rockets
- Launch towers for all rockets
- Soyuz rocket


### Cassi Telescope Viewer

[App page](https://appshunter.io/ios/app/cassi-telescope-viewer/id6759762743)

This app simplifies telescope viewing for amateur astronomers using smartphone mounts. It corrects image orientation and aids in locating celestial objects.

**Highlights:** Smartphone mount compatibility, 360-degree image inversion, Assisted object seeking, Easy-to-use interface

**In-app purchases:** none


## Frequently asked questions

### Is HoppAR free?

HoppAR is free to download, with in-app purchases available.

### Is Cassi Telescope Viewer free?

Cassi Telescope Viewer is free to download, with no in-app purchases.

### Which has better reviews, HoppAR or Cassi Telescope Viewer?

Cassi Telescope Viewer is rated higher. HoppAR averages 4.8 out of 5 from 579 ratings, while Cassi Telescope Viewer averages 5.0 from 1 ratings.

### Do HoppAR or Cassi Telescope Viewer have ads?

Neither HoppAR nor Cassi Telescope Viewer shows ads.

### Which is updated more often, HoppAR or Cassi Telescope Viewer?

HoppAR ships an update every 2 months, and Cassi Telescope Viewer every 5 days. Most recently, HoppAR was updated on October 8, 2026 and Cassi Telescope Viewer 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.*