Conversion GemsConversion Gems
Unriddle logo
Reviewed · Updated 2026-06-19

Unriddle

Analyzes riddles, puzzles, and complex problems with AI-powered solutions.

Reviewed by the Conversion Gems editorial team ·
Try Unriddle
Pricing
Free Trial
Best for
Researchers
Category
AI Productivity
The bottom line

A capable AI research companion for heavy document work — especially valuable for academics and industry researchers who live in PDFs.

7.6
Our score
7.6 / 10
Conversion Gems editorial verdict
Free tier; Plus from $10/mo, Pro $20/mo
Features8/10
8 - strong document chat, summarization, write-and-cite, and multilingual support; AI agents on Max tier; Chrome extension adds breadth.
Value7/10
7 - free tier exists but is limited; $20/mo Pro is reasonable for power users; lack of transparent Max pricing is a mild knock.
Ease of use9/10
9 - upload-and-go UX with zero configuration; summary and Q&A are immediately usable by non-technical researchers.
Ecosystem6/10
6 - Chrome extension and team workspaces help, but no native Zotero/Mendeley connectors or broad API ecosystem yet.
Support7/10
7 - academic discount program and 14-day refund policy; enterprise plan includes dedicated support; community-level help limited on free tier.
What it really is

Anara (formerly Unriddle) — AI research assistant for reading, chatting with, and summarizing complex documents.

Our take

The DB summary mislabels this as a riddle/puzzle solver — it is actually an AI-powered document research assistant. Unriddle rebranded to Anara in March 2025 (unriddle.ai now redirects to anara.com). The platform lets researchers upload PDFs, chat with documents via Q&A, generate summaries, and write with auto-cited references. DB also misclassifies the price tier as 'free_trial'; it is genuinely freemium with a permanent free tier.

Why we rate it

Trusted by 3M+ researchers at Stanford, MIT, GSK, NIH, and Intel. Covers the full research loop — ingest, comprehend, extract, cite, draft — in one tool. Multilingual support (90+ languages) and a Chrome extension for one-click web-article summaries broaden its utility.

The catch

Free tier is quickly limiting (1,000 AI words/day); Pro at $20/mo is essentially required for serious use. Max plan pricing is opaque on the public page. No native integrations with reference managers like Zotero or Mendeley.

Best for
Academic and scientific researchers processing large PDF libraries
Graduate students writing literature reviews with citation needs
Industry analysts summarizing lengthy reports and transcripts
Not good for
Teams needing deep Zotero/Mendeley/EndNote integration
Casual users who only occasionally read a document
Enterprise workflows requiring on-premise or strict data-residency without custom plan
Friction report
Time to value
Fast: upload a PDF and get a summary or start chatting within seconds; no setup or training required.
Scale breakpoint
Per-plan word/upload limits throttle heavy users on Free and Plus; Pro is near-unlimited but per-user cost stacks for large teams.
Walled garden
Moderate: documents and notes live in Anara's cloud; exports are available but cited workflows and libraries don't transfer easily to other tools.

A look inside

Unriddle product screenshot

Frequently Asked Questions

Alternatives

Step up

Elicit or Consensus for structured systematic-review workflows with database search integration.

Lighter alternative

ChatPDF or Adobe Acrobat AI Assistant for occasional single-document Q&A without a subscription.

Ready to try Unriddle?
Opens the official site — we may earn a commission if you sign up.
Try Unriddle

Tags

#AIResearch#Summarization

Explore related categories

Conversion Gems independently reviews every tool. We may earn a commission if you sign up through our links — it never affects our verdict or ranking.