# SPHERE OS vs EarthPi

The clearest difference is review sentiment: EarthPi at 67% against SPHERE OS's 0%. EarthPi also leads on rating (4.4 vs 1.0) and ratings volume (14 vs 2). SPHERE OS's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. EarthPi sells 1 one-off in-app purchase. SPHERE OS asks for nothing beyond the download.

EarthPi holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: EarthPi has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of SPHERE OS's written reviews are positive against 67% of EarthPi's.

SPHERE OS ships an update every 3 weeks, EarthPi every 3 months. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SPHERE OS | EarthPi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/sphere-os/id1579848717/reviews) | **[4.4 (14 ratings)](https://appshunter.io/ios/app/earthpi/id6741358020/reviews)** |
| Number of ratings | 2 | **14** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 951 MB | 116 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LNSOFT](https://appshunter.io/developer/1137904140) | [Othman Alzahrani](https://appshunter.io/developer/1664580679) |

## What reviewers say

### SPHERE OS

[App page](https://appshunter.io/ios/app/sphere-os/id1579848717)

Explore Earth's dynamic systems with an interactive digital globe. Visualize real-time data like cloud cover, seismic activity, and pollution, and engage through voice commands, gestures, and augmented reality. This tool transforms learning about our planet for educational and exhibition purposes.

**Highlights:** Real-time scientific data visualization, Voice recognition for navigation, Gesture-based globe control, Augmented Reality (AR) mode, QR code content integration, Customizable playlists for presentations

**Features:** macOS Compatibility

**In-app purchases:** none


### EarthPi

[App page](https://appshunter.io/ios/app/earthpi/id6741358020)

Explore Earth with 27 interactive map projections. Visualize the planet from different angles, adjust time to see sunlight, and track celestial bodies. Save your discoveries with screenshot functionality.

**Highlights:** 27 Earth projections, Smooth projection transitions, Time control for sunlight simulation, Celestial tracking (sun and moon), Screenshot functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EarthPi Premium | $3.99 | one-time |


## Frequently asked questions

### Is SPHERE OS free?

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

### Is EarthPi free?

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

### Which has better reviews, SPHERE OS or EarthPi?

EarthPi is rated higher. SPHERE OS averages 1.0 out of 5 from 2 ratings, while EarthPi averages 4.4 from 14 ratings.

### Do SPHERE OS or EarthPi have ads?

Neither SPHERE OS nor EarthPi shows ads.

### Which is updated more often, SPHERE OS or EarthPi?

SPHERE OS ships an update every 3 weeks, and EarthPi every 3 months. Most recently, SPHERE OS was updated on October 12, 2026 and EarthPi on October 15, 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.*