Compare AI tools

	Skye A	NotebookLM S	Aider A	Perplexity S
Tagline	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.	Google's research notebook. Turns your docs into a podcast.	Terminal-based AI pair programmer. Git-aware, model-flexible.	AI search done right. Cited answers, not chat theater.
Category	Agents	Research	Coding	Research
Pricing	Waitlist / Beta (pricing not yet disclosed)	Free	Free (open source) + whatever API you use	Free + $20/mo Pro
Best for	iPhone power users who are frustrated that Siri is still reactive and want their home screen to actually anticipate their day.	Students, researchers, anyone with a stack of PDFs or a topic to learn.	Developers who want open-source tooling with full control.	Replacing Google for any question where you want a cited answer in seconds.
Strengths	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	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying	Works in any terminal Auto-commits changes with meaningful messages Works with any model (Claude, GPT, local) Minimal learning curve	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context
Weaknesses	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	Google-only Can be slow on large corpora	Terminal-only Less agentic than Claude Code Setup on Windows is fiddly	Not a general chatbot Answers can be shallow on complex topics
Kai's verdict	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.)	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.	A-tier. The right answer if you want open-source + terminal-native + model-agnostic.	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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