Side by side
PubNub Chat vs Wren
Both stand on websocket tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIiPhone+4
Visit PubNub Chat Free plan Open source APIExtensionMac
Choose Wren if you want a free, open-source research library with annotation, semantic search, and offline PDF processing. Its listed app is for Apple Silicon Macs on macOS 14 or later, so it may not suit users on other platforms.
Visit WrenThe facts
| PubNub Chat | Wren | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | Android, API, iPhone, Linux, Mac, Web, Windows | API, Extension, Mac |
| Lowest paid plan | Starter Plan: $98 a month | Free or on request |
| Plans published | 3 | 1 |
| Maker | Not published | Not published |
| Website | pubnub.com | wrenapp.dev |
| On websocket tools | #7 of 55 | #3 of 55 |
PubNub Chat: what it does well
Wren: what it does well
- Stores research files and notes as plain files.
- Reads and annotates PDFs and EPUBs.
- Searches document text and meaning.
- Processes PDFs, including scanned papers, offline.
- Syncs through folders users already sync.
What to know first
- The listed app requires macOS 14 or later and Apple Silicon.
- Windows and Linux builds are on the roadmap.
- There are no mobile apps.
Alternatives to PubNub Chat Alternatives to Wren The whole list