I’m on Tier 2 and already getting a ton of value from Paperguide. I haven’t fully explored every feature yet, but what I’ve seen so far is solid, especially for research-heavy work, academic writing, or any content that needs credible sources.

What makes Paperguide stand out:
200M+ paper database + AI-powered answers with proper citations

Unlimited AI chat with PDFs and scientific articles, limited to 50 uses every three hours, which I think is totally reasonable

Reference manager with folders, tags, and citation exports

Built-in AI humanizer in the editor, very useful for making text sound more natural

Supports GPT-4, GPT-4o, Claude 3.5 Sonnet, and more

20 full article generations/month at Tier 2, a solid upgrade over Tier 1

Onboarding and learning curve:
It took me a little time to figure out how to use Paperguide. The interface can feel a bit daunting at first, but even without scheduling the onboarding call (included from Tier 2 and up), I still managed to get the hang of it. I’ve been really busy and haven’t had as much time as I’d like to explore it ,and yet it still clicked. That says a lot about the usability once you dive in.

Also worth noting: their support team seems great, and the Discord group is active. If you need guidance, help is just a message away.

Coming soon:
What I’m especially excited about is the Deep Research Report feature launching soon. Tier 2 users will get 50 reports/month, and if it works as well as I hope, I may no longer need my other deep analysis tool.

The only thing I’d still love to see: transparency about which AI model is generating your results. That would really help with understanding output quality and consistency.

Final thoughts:
Paperguide already complements the other research tools I use, and with its current trajectory, it may end up replacing them. For a lifetime deal, this is outstanding value.

I’ve seen quite a few people on the AppSumo page saying they missed it the last time and were waiting for it to return. Well, it’s back now, and if you're doing serious research or writing, you should not miss it this time.