# Open vs Rapid Relay Calculator

The clearest difference is iOS requirement: Open at 13.0 against Rapid Relay Calculator's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Open ships an update every 3 weeks, Rapid Relay Calculator every 4 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Open | Rapid Relay Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rapid-relay-calculator/id6738112792/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | — | Free |
| Size | 133 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ELERNITY LIMITED](https://appshunter.io/developer/1881934530) | [Tao Dong](https://appshunter.io/developer/1779419667) |

## What reviewers say

### Open

[App page](https://appshunter.io/ios/app/open-q/id6737214039)

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

**In-app purchases:** none


### Rapid Relay Calculator

[App page](https://appshunter.io/ios/app/rapid-relay-calculator/id6738112792)

This app helps VEX IQ Robotics Competition participants quickly and accurately calculate scores for the Rapid Relay game. It supports both Teamwork and Skills matches, offers interactive scoring, and allows for saving match data with sorting options. Features like dark mode and keyboard input enhance usability for teams, judges, and coaches.

**Highlights:** Teamwork and Skills match support, Interactive scoring, Score saving with sorting, Practice match schedule generator, Dark mode support, Keyboard input option

**In-app purchases:** none


## Frequently asked questions

### Is Open free?

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

### Is Rapid Relay Calculator free?

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

### Do Open or Rapid Relay Calculator have ads?

Neither Open nor Rapid Relay Calculator shows ads.

### Which is updated more often, Open or Rapid Relay Calculator?

Open ships an update every 3 weeks, and Rapid Relay Calculator every 4 weeks. Most recently, Open was updated on October 6, 2026 and Rapid Relay Calculator on October 7, 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.*