- Best AI assistant apps: ChatGPT (free plan now includes unlimited everyday chats with GPT-6) and Gemini (best on Android and with Google apps). Claude is the pick for writing.
- The new one everyone is downloading: Meta’s Muse, an AI agent that does tasks for you, went to the top of the US free iPhone chart after its September launch.
- Best for research: Perplexity, because every answer shows its sources.
- Best AI video app: CapCut, with AI features on its paid Pro plan (price varies by country).
- Best AI image apps: ChatGPT and Gemini themselves — both make and edit images on their free plans.
- Before you pay: most people only need one $20 assistant subscription, or none at all.
Your phone is the device you use AI on most, and the app stores are now full of AI apps — assistants, agents, photo and video editors, writing and note-taking tools. This guide picks the best AI apps for iPhone and Android in 2026, organised by what you want to do, with the prices each company publishes, checked in October 2026. Updated 22 October 2026.
The best AI apps at a glance
| You want to… | Install | Free? |
|---|---|---|
| Ask anything, write, plan, make images | ChatGPT or Gemini | Yes, generous free plans |
| Write and edit long texts | Claude | Yes (Sonnet models) |
| Get answers with sources | Perplexity | Yes; Pro is $20/month |
| Have AI do tasks for you | Muse (Meta) | Yes, with a usage limit |
| Live news and X posts | Grok | Limited free tier |
| Edit and generate video | CapCut | Basic editing free; AI features on Pro |
| Edit photos | Lightroom Mobile, Snapseed | Snapseed is free |
| Write better in every app | Grammarly keyboard | Yes, with paid upgrades |
| Record and summarise meetings or lectures | Otter | Yes, 300 minutes a month |
AI assistant apps
ChatGPT — the best all-round AI app
ChatGPT does the widest range of things in one app: answers questions, writes and summarises, talks by voice, reads photos you take, searches the web and creates and edits images. OpenAI’s pricing page lists unlimited text chats with GPT-6 on the free plan, with limited uploads, image creation and voice. Go ($8 a month in the US) raises those limits, and Plus ($20) adds advanced reasoning, projects and more image creation. Our ChatGPT plans guide explains which to pick.
Gemini — best on Android and with Google apps
Gemini is built into many Android phones and works with Gmail, Google Maps, Docs and Photos. The free app includes image generation and editing with Google’s new Nano Banana 2.1 model, Gemini Live voice conversations and Deep Research. Paid plans are sold as Google AI Plus, Pro and Ultra; see is Gemini free? for what each adds, and how to use Gemini to get started.
Claude — best for writing
Claude, from Anthropic, is the assistant many people prefer for writing, editing and working with long documents. Its free plan includes web search, file creation and the Sonnet models — now Claude Sonnet 5.5. Claude does not create images. Pro is $20 a month.
Perplexity — best for answers you can check
Perplexity answers like a search engine that writes the reply for you, with numbered sources under every answer. That makes it the better app for research, product comparisons and homework where you need to show where facts came from. It is free to start; Pro is $20 a month. See our Perplexity Pro review.
Muse — Meta’s agent that does tasks for you
Meta launched Muse on 8 September 2026 and it went straight to the top of Apple’s US free-app chart, ahead of ChatGPT. Unlike a chatbot, Meta describes Muse as an agent that “actually does the work”: sending emails, booking travel and filling in forms, asking for your approval before sensitive steps. It is rolling out in the US on iOS and Android, free for most uses with paid plans for more. Connect it to your email and payments only if you are comfortable letting an app act for you.
Copilot and Grok
Microsoft Copilot is the natural pick if you use Windows and Office; its app is free, and premium features come with Microsoft 365 Premium. Grok from xAI is built for live news and X posts, with a limited free tier. All the assistants are compared side by side in the best AI chatbots of 2026.
AI apps for photos, images and video
CapCut — best AI video app
CapCut is the most popular phone video editor for TikTok, Reels and Shorts, and it adds AI on top: auto-captions, effects, and AI video generation. On CapCut’s pricing page, the free plan covers templates and basic editing, while Pro (price varies by country, so check the page in your region) lists access to AI features; ByteDance’s Seedance 2.5 video model is available inside CapCut, priced per second of video. Step by step: how to use CapCut’s AI video generator.
ChatGPT and Gemini for making images
You do not need a separate app to create AI images on your phone: ChatGPT’s Images 2.5 and Gemini’s Nano Banana 2.1 both work on the free plans, and both can edit your own photos (“remove the person in the background”, “make it look like a watercolour”). Compare them in the best AI image generators.
Photo editing: Lightroom, Snapseed and friends
For editing photos, Adobe Lightroom Mobile is the strongest all-round AI editor, Snapseed is the best free option, and Photoroom is good at removing backgrounds for product photos. The full field is in our best AI photo editing apps guide.
AI apps for writing, notes and study
- Grammarly works as a keyboard, so it can check grammar and tone in almost any app: email, messages, social posts.
- Otter records lectures, interviews and meetings and turns them into searchable notes; its free plan includes 300 minutes a month. More options in the best AI note takers.
- Built-in AI: on iPhone 15 Pro and newer, Apple Intelligence rewrites and proofreads text, summarises notifications and makes images in Image Playground at no cost. On Android, Gemini is often already installed.
How much should you pay for AI apps?
The fastest way to overspend is to subscribe to everything. Premium tiers stack up quickly — ChatGPT Plus, Claude Pro, Perplexity Pro and Google AI Pro are each about $20 a month — and they overlap heavily. A sensible order:
- Start free. Use the free plans of ChatGPT and Gemini plus your phone’s built-in AI. Most people never need more.
- Pay for one assistant, not three. If you hit limits every week, pick the one you use most and subscribe to that.
- Add a specialist only for a real, recurring job — CapCut Pro if you edit video weekly, Otter if you record many meetings.
- Watch free trials. Many AI apps start with a 3- or 7-day trial that turns into a paid plan. On iPhone, cancel in Settings › your name › Subscriptions at least a day before it ends.
Looking for free tools beyond apps? See 25 free AI tools.
Are AI apps safe for your private data?
Most AI apps send what you type, say or photograph to the company’s servers. Do not paste passwords, card numbers or medical details, check each app’s settings for options to stop your chats being used for training, and be extra careful with agent apps such as Muse that can act on your accounts. Apple Intelligence keeps more processing on the device and is the most private of the built-in options.
Frequently asked questions
What are the best AI apps in 2026?
ChatGPT and Gemini are the best all-round AI apps, with generous free plans. Claude is best for writing, Perplexity for research with sources, Meta’s Muse for having an agent do tasks, CapCut for video and Otter for recording notes.
What is the best free AI app?
ChatGPT: its free plan includes unlimited everyday chats with GPT-6, plus limited image creation and voice. Gemini’s free app is a close second and is the better choice on Android.
What is Muse and why is it the top app?
Muse is Meta’s personal AI agent, launched in the US on 8 September 2026. Instead of only answering questions, it can carry out tasks such as sending emails or booking travel after you approve them. It overtook ChatGPT as the top free iPhone app in the US shortly after launch.
Which AI app is best for students?
ChatGPT or Gemini for explanations and study help, Perplexity when you need sources, and Otter for recording lectures. Check your school’s rules on AI use for assignments.
Do I need to pay for AI apps?
Usually not. The free plans of ChatGPT and Gemini plus your phone’s built-in AI cover most everyday needs. Pay for one assistant only if you hit its limits regularly.
Which phones can run these AI apps?
Apps such as ChatGPT, Gemini, Claude and CapCut run on almost any recent iPhone or Android phone because the heavy work happens in the cloud. Apple Intelligence needs an iPhone 15 Pro or newer.