App.js vs React Universe App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
App.js
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This new version of the official conference app includes the full event schedule, speaker profiles, a redesigned interface, and real-time notifications so you never miss a session. Everything you need for this year’s AppJS experience - now in your pocket!
React Universe App
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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.
Screenshots
Verdict
The clearest difference is ads: React Universe App at none against App.js's shown. React Universe App also leads on update cadence (every 2 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
App.js ships an update fortnightly, React Universe App every 2 days. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.
| Parameter | App.js | React Universe App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 94 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Software Mansion | Callstack.io |
In-app purchases
App.js
No in-app purchases
React Universe App
No in-app purchases
