# Stargazing vs Modulus Coaching Classes

The clearest difference is in-app purchases: Modulus Coaching Classes at none against Stargazing's 7. Modulus Coaching Classes also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.0). Stargazing's advantage is update cadence (fortnightly vs monthly) and chart position (#202 vs unranked). On price and device support there is nothing between them.

Both are free to download. Stargazing sells 5 in-app purchases, starting at $3.99 per 7 days. Modulus Coaching Classes asks for nothing beyond the download.

Stargazing ships an update fortnightly, Modulus Coaching Classes monthly. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Stargazing | Modulus Coaching Classes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (1.2K ratings)](https://appshunter.io/ios/app/stargazing-stars-and-planets/id6753744784/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 17.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#202** | — |
| Size | 226 MB | 116 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TVGSOFT LIMITED](https://appshunter.io/developer/1829657899) | [Novus Learning](https://appshunter.io/developer/1686714769) |

## What reviewers say

### Stargazing

[App page](https://appshunter.io/ios/app/stargazing-stars-and-planets/id6753744784)

**Currently charting:** #202 Top Free · Education (US App Store)

Explore the night sky in real time, identifying stars, planets, and constellations. An AI guide answers your astronomy questions, and a live calendar keeps you updated on celestial events. Get notifications for upcoming shows and enjoy offline access.

**Highlights:** Real-time interactive sky map, AI astronomy guide (Astra), Live universe calendar, Event notifications, Offline access, Telescope control

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly - Unlimited Access | $3.99 | per 7 days |
| Monthly - Unlimited Access | $12.99 | per month |
| Yearly - Unlimited Access | $39.99 | per year |
| Yearly - Unlimited Access | $39.99 | per year |
| Lifetime - Unlimited Access | $129.99 | one-time |


### Modulus Coaching Classes

[App page](https://appshunter.io/ios/app/modulus-coaching-classes/id6778116390)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stargazing free?

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

### Is Modulus Coaching Classes free?

Modulus Coaching Classes is free to download, with no in-app purchases.

### Do Stargazing or Modulus Coaching Classes have ads?

Stargazing shows ads; Modulus Coaching Classes does not.

### Which is updated more often, Stargazing or Modulus Coaching Classes?

Stargazing ships an update fortnightly, and Modulus Coaching Classes monthly. Most recently, Stargazing was updated on November 9, 2026 and Modulus Coaching Classes on November 5, 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.*