React Universe App

Callstack.io Business iPhoneiPadiPod touch

React Universe App is a free Business app for iPhone and iPad by Callstack.io. Requires iOS 15.1. Updated September 4, 2025.

Price: Free; on the App Store
Size: 41 MB; Age 4+
Updated: Sep 4; 2025 · v1.0.3

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Screenshots

About React Universe App

Your event companion — powered by Callstack React Universe App helps you get the most out of every tech event. Whether you're attending a conference or meetup, this app makes it easy to connect, explore, and stay informed. No passwords or accounts — just sign up with your email and go.

What’s new

Version 1.0.3 · Updated September 4, 2025

We fixed the bugs we found on the first day of the conference

App privacy

The developer, Callstack.io, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

Contact Info: Email Address, Name, Other User Contact Info
Identifiers: User ID

Used for: App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

Diagnostics: Crash Data, Performance Data, Other Diagnostic Data

Used for: Analytics

App details

React Universe App is a free Business app for iPhone, iPad and iPod touch, developed by Callstack.io. It requires iOS 15.1 or later and is 41 MB to download. It was first released on August 18, 2025 and last updated on September 4, 2025.

Category: Business
Price: Free
Version: 1.0.3
Size: 41 MB
Requires: iOS 15.1 or later
Compatibility: iPhone, iPad, iPod touch
Languages: English
Age rating: 4+
Released: August 18, 2025
Last updated: September 4, 2025
Developer: Callstack.io

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Alternatives to React Universe App

Looking for apps like React Universe App? Here are 6 similar apps on the App Store. The highest rated is Haptics presets - Pulsar (5.0/5), and all 6 are free to download.

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Excalibur v4	–	Free	Apr 10, 2026	Compare

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