Best AI Apps for Android (2026): 9 Picks Tested by a Developer
Full transparency: I build Arc, an AI screen assistant for Android. It’s on this list because people use it and it wins at what it does — but I’ve tested each app below against the same standard: does it actually save time every day? Where a competitor beats Arc, I say so.
Here are the nine AI apps that earned a spot on my phone in 2026.
1. Arc — AI Screen Assistant (Best overall assistant)
Free · Android + macOS
The category Arc created: a floating AI sidebar that works on top of every app. Swipe from the screen edge and it appears over whatever you’re doing — no switching, no copy-pasting.
What it does:
- Summarizes articles, PDFs, emails — with read-aloud for commutes
- Drafts replies and rewrites text using your saved personal info
- Extracts events, addresses, and OTP codes from any screen (tappable, saved before they expire)
- Transcribes and summarizes phone calls
- Custom AI actions for your repetitive routines
Who it’s for: anyone who wants AI help without leaving their current app. Especially strong if you read a lot on your phone or handle lots of messages.
Honest limit: it’s a screen assistant, not a full chatbot platform — for deep research sessions you might still open a dedicated chatbot.
2. Google Gemini (Best built-in assistant)
Free / AI Premium · Android + iOS
Gemini replaced Google Assistant on modern Android and it’s now genuinely good — especially with screen-awareness on Pixel and Galaxy. If you pay for AI Premium, it also lands in Gmail and Docs.
Best for: Google-native users. Limit: you leave your current app to use it.
3. Circle to Search (Best built-in feature)
Long-press the navigation bar, circle anything. It’s the fastest “what is this?” tool on any phone — products, landmarks, homework. Ships with Pixel and Samsung flagships.
Limit: lookups only — no writing, summarizing, or automation.
4. ChatGPT (Best general chatbot)
Free / $20 Plus · Android, iOS
Still the deepest general-purpose chatbot. The Android app is solid, voice mode is excellent, and custom GPTs add range. The trade-off is the same as Gemini: it lives in its own app, isolated from what you’re doing.
5. Sider (Best browser sidebar)
Free / from $10/mo · iOS, Desktop, Web
The original “AI sidebar” — a panel beside any webpage with GPT-4-class models. Great for web research and page summaries on desktop.
Limit on Android: reduced experience versus desktop.
6. Otter.ai (Best meeting transcription)
Free / from $8.33/mo · Android, iOS, Web
If you sit in meetings, Otter records, transcribes, and summarizes. Arc transcribes phone calls; Otter covers scheduled meetings — they complement each other.
7. Perplexity (Best for research)
Free / $20/mo · Android, iOS
Cited, up-to-date answers with a clean mobile app. When you need current facts with sources instead of a chat, Perplexity is the tool. Their Comet browser push makes it more agentic every month.
8. Notion AI (Best for note-takers)
$10/mo add-on · Android, iOS, Web
If your second brain lives in Notion, its AI can summarize, search, and draft inside your workspace. Pricing is per-member, which stings for solo users — but the workspace integration is real.
9. Tasker + AI plugins (Best for automation nerds)
~$3 one-off · Android
Not an AI app itself, but pair Tasker with an AI API and you can build automations Arc’s custom actions don’t cover. Highest effort-to-power ratio on this list.
Which should you install first?
If you only pick one: Arc — because it works inside every app on this list’s use cases, without switching context. If you pick two: Arc + Gemini covers screen-assistance and deep-Google-integration respectively, for free.
Written by Mamata, indie developer building Arc. I test every update of every app on this list — this page gets updated as things change.