# Star Guide vs Internalize

The clearest difference is update cadence: Internalize at every 4 days against Star Guide's every 8 days. Star Guide's advantage is iOS requirement (15.5 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Star Guide sells 4 in-app purchases, starting at $1.99 per 7 days and Internalize sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Star Guide ships an update every 8 days, Internalize every 4 days. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Star Guide | Internalize |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4.3K ratings)](https://appshunter.io/ios/app/star-guide-night-sky-map/id1542535191/reviews)** | — |
| Number of ratings | **4.3K** | — |
| Positive reviews | 26.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 220 MB | 10 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Star register](https://appshunter.io/developer/1542535193) | [Trilon Apps](https://appshunter.io/developer/1563999228) |

## What reviewers say

### Star Guide

[App page](https://appshunter.io/ios/app/star-guide-night-sky-map/id1542535191)

Transform your device into a real-time planetarium to explore the night sky. Identify stars and planets, and plan optimal viewing times. Experience celestial objects in 3D and preview future or past sky conditions from any location.

**Highlights:** Real-time star and planet identification, Augmented Reality sky overlay, 3D celestial object visualization, Best viewing time notifications, Sky time travel (past/future), Location-based sky preview

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Star-Registration Premium | $4.99 | per month |
| Annually | $29.99 | per year |
| One time | $24.99 | one-time |


### Internalize

[App page](https://appshunter.io/ios/app/internalize-ai-paper-reader/id6783331759)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Import Credit | $4.99 | one-time |
| 5 Import Credits | $17.99 | one-time |
| 10 Import Credits | $29.99 | one-time |


## Frequently asked questions

### Is Star Guide free?

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

### Is Internalize free?

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

### Do Star Guide or Internalize have ads?

Neither Star Guide nor Internalize shows ads.

### Which is updated more often, Star Guide or Internalize?

Star Guide ships an update every 8 days, and Internalize every 4 days. Most recently, Star Guide was updated on October 17, 2026 and Internalize on October 1, 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.*