# Cassi Telescope Viewer vs SPECTRAL

The clearest difference is in-app purchases: Cassi Telescope Viewer at none against SPECTRAL's 10. Cassi Telescope Viewer also leads on ads (none vs shown) and rating (5.0 vs 4.8). SPECTRAL's advantage is ratings volume (4 vs 1) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. SPECTRAL sells 10 in-app purchases, starting at $2.99 per month. Cassi Telescope Viewer asks for nothing beyond the download.

Cassi Telescope Viewer holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Cassi Telescope Viewer | SPECTRAL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cassi-telescope-viewer/id6759762743/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/spectral-ghost-radar-detector/id6761761617/reviews) |
| Number of ratings | 1 | **4** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 54 MB |
| Requires iOS | 26.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Cassi Telescope LLC](https://appshunter.io/developer/1880533492) | [Peerware](https://appshunter.io/developer/1891318198) |

## What reviewers say

### 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


### SPECTRAL

[App page](https://appshunter.io/ios/app/spectral-ghost-radar-detector/id6761761617)

Transform your device into a ghost hunting tool with an EMF radar, spirit box, and SLS camera. Analyze paranormal activity with real sensor data and explore haunted locations through interactive case files. Record and share your findings with a community of investigators.

**Highlights:** EMF Radar with live readings, Spirit Box with multiple voice channels, SLS Camera with human-shaped figure detection, EVP Recorder with anomaly tagging, Séance Board for communication, Interactive haunted case files, Record and share investigations

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spectral Pro Monthly | $2.99 | per month |
| Spectral Pro Annual | $11.99 | per year |
| Shadow & Specter Filter Pack | $0.99 | one-time |
| Ecto Detector Filter | $0.99 | one-time |
| Child Spirit Channel | $0.99 | one-time |
| Demon Channel | $0.99 | one-time |
| Soldier's Echo Channel | $0.99 | one-time |
| UV Spectrum Filter | $0.99 | one-time |
| Season Pass Premium | $2.99 | one-time |
| Spectral Pro Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Cassi Telescope Viewer free?

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

### Is SPECTRAL free?

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

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

Cassi Telescope Viewer is rated higher. Cassi Telescope Viewer averages 5.0 out of 5 from 1 ratings, while SPECTRAL averages 4.8 from 4 ratings.

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

SPECTRAL shows ads; Cassi Telescope Viewer does not.

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

Cassi Telescope Viewer ships an update every 5 days, and SPECTRAL every 5 days. Most recently, Cassi Telescope Viewer was updated on October 31, 2026 and SPECTRAL on November 9, 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.*