# Realm App vs Flutter Tools & UI Builder Pro

The clearest difference is in-app purchases: Realm App at none against Flutter Tools & UI Builder Pro's 1. Flutter Tools & UI Builder Pro's advantage is update cadence (every 2 weeks vs every 3 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Flutter Tools & UI Builder Pro sells 1 one-off in-app purchase. Realm App asks for nothing beyond the download.

Realm App ships an update every 3 months, Flutter Tools & UI Builder Pro every 2 weeks. The most recent releases landed on September 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Realm App | Flutter Tools & UI Builder Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 60 MB | 67 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Globalstar Inc](https://appshunter.io/developer/881495413) | [Thiem Nguyen](https://appshunter.io/developer/1658699065) |

## What reviewers say

### Realm App

[App page](https://appshunter.io/ios/app/realm-app/id6443846471)

Configure and update your ST150 Satellite Transmitter with this application. It provides essential tools for managing your device's settings and ensuring it's running the latest software.

**Highlights:** Update ST150 Satellite Transmitter, Configure device settings, Manage transmitter configuration, Access device updates

**Features:** macOS Compatibility

**In-app purchases:** none


### Flutter Tools & UI Builder Pro

[App page](https://appshunter.io/ios/app/flutter-tools-and-ui-builder-pro/id6499068488)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is Realm App free?

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

### Is Flutter Tools & UI Builder Pro free?

Flutter Tools & UI Builder Pro is free to download, with in-app purchases available.

### Do Realm App or Flutter Tools & UI Builder Pro have ads?

Neither Realm App nor Flutter Tools & UI Builder Pro shows ads.

### Which is updated more often, Realm App or Flutter Tools & UI Builder Pro?

Realm App ships an update every 3 months, and Flutter Tools & UI Builder Pro every 2 weeks. Most recently, Realm App was updated on September 16, 2026 and Flutter Tools & UI Builder Pro on September 21, 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.*