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Lex
A
NotebookLM
S
Skye
A
TaglineGoogle Docs with an AI collaborator baked in.Google's research notebook. Turns your docs into a podcast.An agentic iPhone home screen that replaces your static icon grid with AI widgets that proactively surface health, calendar, finance, and local context — without you having to open a single app.
CategoryWritingResearchAgents
PricingFree + $12/moFreeWaitlist / Beta (pricing not yet disclosed)
Best forEssays, long-form drafts, thinking on the page.Students, researchers, anyone with a stack of PDFs or a topic to learn.iPhone power users who are frustrated that Siri is still reactive and want their home screen to actually anticipate their day.
Strengths
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Upload anything, ask questions, get cited answers
  • Audio Overview turns docs into a 10-min podcast
  • Great for studying
  • Ambient, proactive intelligence delivered via native iOS widgets — no app-switching required
  • Cross-domain context: health, calendar, email, finances, and local recommendations in one layer
  • Works within iOS permission model (no jailbreak or sideloading), making App Store approval plausible
  • Strong pre-launch signal: 25k+ waitlist and backing from a16z, True Ventures, and SV Angel
Weaknesses
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Google-only
  • Can be slow on large corpora
  • Still pre-launch / beta — zero proven track record and no public pricing yet
  • iPhone-only by design, which immediately locks out half the smartphone market
  • Battery drain and privacy concerns from constant ambient context scanning are real and unresolved
Kai's verdictA-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.The concept is genuinely compelling — turning the home screen into a living AI layer is a smarter bet than yet another chat interface — but this is vaporware until it ships publicly and we see whether Apple's sandbox lets it breathe. (Verdict pending Phi's full review.)
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