# PRO.4 PND vs Relayplan

PRO.4 PND and Relayplan are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PRO.4 PND | Relayplan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 43 MB | 44 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pro-Bit PRO.4 d.o.o.](https://appshunter.io/developer/1071235078) | [Envoo, d.o.o.](https://appshunter.io/developer/1773043700) |

## What reviewers say

### PRO.4 PND

[App page](https://appshunter.io/ios/app/pro4-pnd/id1382659387)

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

**In-app purchases:** none


### Relayplan

[App page](https://appshunter.io/ios/app/relayplan/id6748298125)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PRO.4 PND free?

PRO.4 PND is free to download, with no in-app purchases.

### Is Relayplan free?

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

### Do PRO.4 PND or Relayplan have ads?

Neither PRO.4 PND nor Relayplan shows ads.

### Which is updated more often, PRO.4 PND or Relayplan?

PRO.4 PND ships an update every 2 months, and Relayplan every 2 months. Most recently, PRO.4 PND was updated on October 29, 2026 and Relayplan on October 11, 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.*