# 4 vs DiscoveRig

The clearest difference is price: DiscoveRig at Free against 4's $3.99. DiscoveRig also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 10 months). 4's advantage is iOS requirement (12.0 vs 15.0). On ads and device support there is nothing between them.

DiscoveRig is free to download; 4 costs $3.99 up front. 4 sells 1 one-off in-app purchase. DiscoveRig asks for nothing beyond the download.

4 ships an update every 10 months, DiscoveRig every 2 months. The most recent releases landed on October 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 4 | DiscoveRig |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/4-way-coach/id477045460/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 84.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 67 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [AirXygene Parachutisme](https://appshunter.io/developer/405851556) | [andrea burato](https://appshunter.io/developer/1561544156) |

## What reviewers say

### 4

[App page](https://appshunter.io/ios/app/4-way-coach/id477045460)

Visualize and plan skydiving jumps with animated guides for 3-way and 4-way relative work. Prepare briefings, practice moves, and judge jumps for training or competition.

**Highlights:** Animated 4-way relative work guides, 3-way relative work visualization, Jump briefing preparation, Practice jump moves, Jump judging assistance, Pocket-sized competition tool

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Way Formations | $1.99 | one-time |


### DiscoveRig

[App page](https://appshunter.io/ios/app/discoverig/id6477047309)

This application is designed for users who own the DiscoveRig canopy tracking device. It provides functionality to manage and utilize the tracking device. The app is developed by DiscoveRig SRLS.

**Highlights:** Canopy tracking device management, Utilize tracking device functionality, Companion application

**In-app purchases:** none


## Frequently asked questions

### Is 4 free?

4 costs $3.99, and also offers in-app purchases.

### Is DiscoveRig free?

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

### Do 4 or DiscoveRig have ads?

Neither 4 nor DiscoveRig shows ads.

### Which is updated more often, 4 or DiscoveRig?

4 ships an update every 10 months, and DiscoveRig every 2 months. Most recently, 4 was updated on October 30, 2026 and DiscoveRig on October 15, 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.*