# Big Sky Mountain Map vs Venn Map

The clearest difference is in-app purchases: Venn Map at none against Big Sky Mountain Map's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Big Sky Mountain Map sells 3 in-app purchases, starting at $24.99 per year. Venn Map asks for nothing beyond the download.

Big Sky Mountain Map ships an update every 9 days, Venn Map every 2 weeks. The most recent releases landed on September 16, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Big Sky Mountain Map | Venn Map |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Size | 462 MB | 37 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ECO Systems](https://appshunter.io/developer/1625468719) | [Venn LTD](https://appshunter.io/developer/1872388605) |

## What reviewers say

### Big Sky Mountain Map

[App page](https://appshunter.io/ios/app/big-sky-mountain-map/id6755308543)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $24.99 | per year |
| Family | $59.99 | per year |
| Day Pass | $0.99 | one-time |


### Venn Map

[App page](https://appshunter.io/ios/app/venn-map/id6758341869)

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

**In-app purchases:** none


## Frequently asked questions

### Is Big Sky Mountain Map free?

Big Sky Mountain Map is free to download, with in-app purchases available.

### Is Venn Map free?

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

### Do Big Sky Mountain Map or Venn Map have ads?

Neither Big Sky Mountain Map nor Venn Map shows ads.

### Which is updated more often, Big Sky Mountain Map or Venn Map?

Big Sky Mountain Map ships an update every 9 days, and Venn Map every 2 weeks. Most recently, Big Sky Mountain Map was updated on September 16, 2026 and Venn Map on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*