# Pi Relay vs Difftray

Pi Relay and Difftray 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.

Pi Relay ships an update fortnightly, Difftray every 11 days. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Pi Relay | Difftray |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 11 days** |
| Size | 2 MB | 70 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Zerui Zhou](https://appshunter.io/developer/1817055091) | [Marco Gomiero](https://appshunter.io/developer/1680585376) |

## What reviewers say

### Pi Relay

[App page](https://appshunter.io/ios/app/pi-relay/id6768893799)

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

**In-app purchases:** none


### Difftray

[App page](https://appshunter.io/ios/app/difftray-code-review-and-diff/id6789255782)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pi Relay free?

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

### Is Difftray free?

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

### Do Pi Relay or Difftray have ads?

Neither Pi Relay nor Difftray shows ads.

### Which is updated more often, Pi Relay or Difftray?

Pi Relay ships an update fortnightly, and Difftray every 11 days. Most recently, Pi Relay was updated on September 29, 2026 and Difftray on September 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.*