# Geoglight vs O

The clearest difference is in-app purchases: O at none against Geoglight's 2. O also leads on ads (none vs shown) and update cadence (every 2 weeks vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Geoglight sells 2 in-app purchases, starting at $5.99 per 3 months. O asks for nothing beyond the download.

Geoglight ships an update monthly, O every 2 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | Geoglight | O |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/o-atlas/id6779100522/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 14 MB | 8 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [keiji matsumoto](https://appshunter.io/developer/354143756) | [Masaya Tojo](https://appshunter.io/developer/6779100524) |

## What reviewers say

### Geoglight

[App page](https://appshunter.io/ios/app/geoglight/id6761717077)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Season Unlock | $5.99 | per 3 months |
| Unlock restrictions(Buy once) | $39.99 | one-time |


### O

[App page](https://appshunter.io/ios/app/o-atlas/id6779100522)

Explore the world with a detailed, orienteering-style map featuring high-resolution contour lines and customizable scales. Create and import orienteering courses, view satellite imagery, and navigate with your current location and heading.

**Highlights:** Worldwide maps from OpenStreetMap, Selectable contour intervals, Customizable map scales, Offline map caching, Satellite imagery, Orienteering course creation, Import/export IOF XML course files

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

**In-app purchases:** none


## Frequently asked questions

### Is Geoglight free?

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

### Is O free?

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

### Do Geoglight or O have ads?

Geoglight shows ads; O does not.

### Which is updated more often, Geoglight or O?

Geoglight ships an update monthly, and O every 2 weeks. Most recently, Geoglight was updated on October 28, 2026 and O on October 28, 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.*