# Discovery RA vs UI Playground

The clearest difference is rating: UI Playground at 5.0 against Discovery RA's 4.5. Discovery RA's advantage is in-app purchases (none vs 7) and device support (3 vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. UI Playground sells 7 in-app purchases, starting at $4.99 per 7 days. Discovery RA asks for nothing beyond the download.

UI Playground holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 3 respectively.

Discovery RA ships an update every 2 months, UI Playground monthly. The most recent releases landed on October 13, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Discovery RA | UI Playground |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (8 ratings)](https://appshunter.io/ios/app/discovery-ra/id1579586447/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ui-playground/id6504997189/reviews)** |
| Number of ratings | **8** | 3 |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 75 MB | 75 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sibel Inc.](https://appshunter.io/developer/1444729060) | [Emanuel Fernandes](https://appshunter.io/developer/1754554489) |

## What reviewers say

### Discovery RA

[App page](https://appshunter.io/ios/app/discovery-ra/id1579586447)

Manage and collect data from Sibel sensors with this intuitive application. Streamline workflows through effortless data collection, real-time event labeling, and secure cloud integration. Access and analyze your sensor data directly on your device.

**Highlights:** Effortless data collection, Direct data download, Real-time event labeling, Secure cloud integration, Sensor management

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

**In-app purchases:** none


### UI Playground

[App page](https://appshunter.io/ios/app/ui-playground/id6504997189)

Design and preview native iOS UI components with customizable options. Export native code to streamline development and share with others. Supports designers, developers, and product owners.

**Highlights:** Explore and customize native UI components, Preview live components with screenshots, Export native code for development, Auto-save and multiple draft support, Adheres to Human Interface Guidelines, Supports semantic colors and SF Symbols, Save to iCloud for cross-device work

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |
| Biannual | $23.99 | per 6 months |
| Yearly | $44.99 | per year |
| Yearly | $49.99 | per year |
| Lifetime Discount | $99.00 | one-time |
| Lifetime | $149.00 | one-time |


## Frequently asked questions

### Is Discovery RA free?

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

### Is UI Playground free?

UI Playground is free to download, with in-app purchases available.

### Which has better reviews, Discovery RA or UI Playground?

UI Playground is rated higher. Discovery RA averages 4.5 out of 5 from 8 ratings, while UI Playground averages 5.0 from 3 ratings.

### Do Discovery RA or UI Playground have ads?

Neither Discovery RA nor UI Playground shows ads.

### Which is updated more often, Discovery RA or UI Playground?

Discovery RA ships an update every 2 months, and UI Playground monthly. Most recently, Discovery RA was updated on October 13, 2026 and UI Playground on October 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.*