# Zeppos vs 4Pilots

The clearest difference is in-app purchases: Zeppos at none against 4Pilots's 3. Zeppos also leads on ads (none vs shown) and update cadence (every 4 months vs every 19 months). On price and device support there is nothing between them.

Both are free to download. 4Pilots sells 3 in-app purchases, starting at $1.99 per month. Zeppos asks for nothing beyond the download.

Zeppos ships an update every 4 months, 4Pilots every 19 months. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Zeppos | 4Pilots |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 19 months |
| Size | 23 MB | 47 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [T42 Ltd](https://appshunter.io/developer/922060423) | [Milos Cubrilo](https://appshunter.io/developer/1676618688) |

## What reviewers say

### Zeppos

[App page](https://appshunter.io/ios/app/zeppos/id1195552744)

**Features:** macOS Compatibility

**In-app purchases:** none


### 4Pilots

[App page](https://appshunter.io/ios/app/4pilots-e6b-and-flight-plans/id6446201128)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $17.99 | per year |
| 4Pilots Pro | $24.99 | one-time |


## Frequently asked questions

### Is Zeppos free?

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

### Is 4Pilots free?

4Pilots is free to download, with in-app purchases available.

### Do Zeppos or 4Pilots have ads?

4Pilots shows ads; Zeppos does not.

### Which is updated more often, Zeppos or 4Pilots?

Zeppos ships an update every 4 months, and 4Pilots every 19 months. Most recently, Zeppos was updated on October 8, 2026 and 4Pilots on September 30, 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.*