How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- ChatGPT does the most things in one app, with chat, images, voice and a free tier that covers everyday questions.
- Claude writes best in independent comparisons, with Pro at $20 per month for heavier use.
- Gemini fits Google Workspace users, with a free tier plus AI Plus at $4.99 and AI Pro at $19.99 per month.
- Perplexity is the pick for cited research, since answers link to sources instead of asking you to trust the text.
- Every model can invent facts, so check names, numbers, dates and code before relying on an answer.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 ChatGPT | All-round productivity | Free (Go $8 per month, Plus $20 per month) | Yes |
 Claude | Writing and reasoning | Free (Pro $20 per month) | Yes |
 Gemini | Google Workspace users | Free (AI Plus $4.99 per month, AI Pro $19.99 per month) | Yes |
 Perplexity | Cited research | Free (Pro $20 per month) | Yes |
 Microsoft Copilot | Microsoft 365 users | Free (Microsoft 365 Personal $9.99 per month) | Yes |
 Meta AI | Social app users | Free | Yes |
 DeepSeek | Free chat with no paywall | Free | Yes |
 Poe | Many models in one app | Free (Basic from $4.99 per month) | Yes |
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The best AI mobile apps
#1ChatGPT
Best for: All-round productivity4.6/5 on
G2 (3,089 reviews, checked Oct 2026)
Visit chatgpt.com
Starting priceFree (Go $8 per month, Plus $20 per month)
Free planYes
ChatGPT remains the all-round pick in 2026, covering chat, writing, coding help, image generation and voice in one mobile app. The free tier covers unlimited text chat on current models with some image and voice use, while Go at $8 per month sits between free and Plus, and Plus at $20 per month adds higher limits and stronger models. Pro tiers run higher for power users.
The free tier limits uploads, voice and image generation, so heavy users hit walls. Model names and tiers change often, so check the current pricing page before paying. For most people, ChatGPT free is the right first AI app, and Plus is the upgrade when limits start to bite.
What we like- Broadest capability in one app
- Voice and image features
- Huge user base
Watch out for- Free tier limits uploads and image generation
- Top tiers cost more
#2Claude
Best for: Writing and reasoning4.6/5 on
G2 (488 reviews, checked Oct 2026)
Visit claude.ai
Starting priceFree (Pro $20 per month)
Free planYes
Claude earns the writing pick in independent 2026 comparisons, with natural, well-structured long-form answers and strong multi-step reasoning. The free tier covers chat on Sonnet and Haiku models with voice mode, while Pro at $20 per month, or $17 billed annually, adds the strongest model and higher limits. Max tiers from $100 per month serve power users.
Free usage is capped on a rolling five-hour window, so long sessions can pause. Image generation is thinner than ChatGPT. Writers, editors and anyone who needs careful reasoning should try Claude free first and compare its drafts against ChatGPT on the same prompt.
What we like- Best writing quality in comparisons
- Strong reasoning
- Clean interface
Watch out for- Free tier caps usage on a rolling window
- Fewer image features than ChatGPT
Starting priceFree (AI Plus $4.99 per month, AI Pro $19.99 per month)
Free planYes
Gemini fits anyone living in Google apps: Gmail, Docs, Drive and Calendar connect directly, and Gemini Live offers a conversational voice mode on mobile. The free tier covers lighter models with generous limits, AI Plus at $4.99 per month adds more, and AI Pro at $19.99 per month adds the strongest model, Deep Research and storage.
The free tier leans on lighter models, so the strongest reasoning sits behind AI Pro. Google Workspace users get Gemini included in some plans from $7 per user per month. For Android users and Google households, Gemini is the natural default.
What we like- Deep Google app integration
- Gemini Live voice
- Cheap AI Plus entry
Watch out for- Free tier uses lighter models
- Best features need AI Pro
Starting priceFree (Pro $20 per month)
Free planYes
Perplexity answers questions like a search engine with a chatbot attached: each answer links to sources, so claims can be checked rather than trusted. The free tier covers basic search and chat with fewer citations per answer, while Pro at $20 per month adds more citations, stronger models and higher limits. Max tiers run higher for research-heavy users.
For creative writing or long documents, Claude or ChatGPT fit better. For research, news and fact-checking on mobile, Perplexity cited answers are the most trustworthy starting point in this list, provided the cited sources themselves are checked.
What we like- Answers link to sources
- Strong for research
- Clean mobile search
Watch out for- Fewer citations per answer on free
- Less of a general writer than Claude
Starting priceFree (Microsoft 365 Personal $9.99 per month)
Free planYes
Microsoft Copilot offers free chat in its app with a Microsoft account, no card required, and deeper integration inside Windows, Edge and Office apps for subscribers. Microsoft 365 Personal at $9.99 per month bundles Copilot features with Office apps, while business Copilot add-ons run higher per user per month.
Copilot Pro is not sold as its own US subscription, so the upgrade path runs through Microsoft 365 plans rather than a simple monthly tier. Windows and Office users get the most value here. Users outside the Microsoft ecosystem will find ChatGPT or Gemini simpler.
What we like- Built into Windows, Edge and Office
- Free chat with a Microsoft account
Watch out for- Best features need Microsoft 365
- Standalone Pro is not sold separately in the US
Starting priceFree
Free planYes
Meta AI is fully free for core chat, built into the Meta AI app plus Instagram, WhatsApp and Messenger, so it reaches users where they already spend time. There is no standalone Meta AI subscription; a Meta One bundle from $7.99 per month adds AI generation features for individuals, but core chat stays free.
Power users who want higher limits and stronger models will outgrow Meta AI faster than ChatGPT or Claude. Privacy-minded users should also review settings, since chats can feed training unless adjusted. For casual questions inside social apps, Meta AI is the zero-cost, zero-setup pick.
What we like- Fully free core chat
- Lives inside Instagram, WhatsApp and Messenger
Watch out for- No standalone paid tier for power users
- Ad-supported model
Starting priceFree
Free planYes
DeepSeek offers a full chat app on web and mobile with no feature gate above it and no published subscription tier. That makes it the most generous free option here for users who want strong reasoning without paying $20 per month. API use is pay-as-you-go, and self-hosted open weights cost nothing beyond personal compute.
The ecosystem is smaller than ChatGPT or Gemini, with fewer integrations and third-party apps. Support and uptime expectations should be set accordingly. For budget users and tinkerers who want capable free chat, DeepSeek is the pick to try beside the big names.
What we like- Full chat app with no subscription tier
- Strong reasoning for free
- Open weights
Watch out for- No paid tier for higher limits
- Smaller ecosystem
- API is pay-as-you-go
Starting priceFree (Basic from $4.99 per month)
Free planYes
Poe lets one app host bots from many vendors, so users can compare answers from different models without switching apps. The free tier gives daily points shared across all bots, while Basic from $4.99 per month adds more points and higher tiers add further capacity. That structure suits curious users who want to sample models before committing to one $20 subscription.
Shared points are the catch: heavy use of top models burns points fast, and several tiers sit above the entry price. Users who settle on one model will usually save by subscribing to it directly. Users still exploring should start with Poe free and compare outputs side by side.
What we like- Access to many vendors bots in one app
- Low entry price
- Easy model switching
Watch out for- Shared compute points cap use across bots
- Best models cost more points
How we chose
We compared vendor pricing pages and October 2026 comparison guides, favoring apps with a real free tier and a published paid price. Prices change often in this category, so figures here reflect vendor pages as of October 2026 and should be rechecked before buying. We weighed capability breadth, writing quality, research trustworthiness, ecosystem fit and free-tier generosity, and we left out single-purpose AI apps like photo editors, since this list covers general AI assistants.
Using AI apps safely on mobile
Treat every answer as a draft, not a fact, and keep that habit even when the app has been right ten times in a row. The eleventh answer is where an invented date or a wrong dosage or a broken code snippet does real damage, and confidence in the tone gives no warning. Check names, numbers, dates, code and medical or legal claims against a primary source before acting on them, since every model here can invent details that sound confident. A citation does not prove the source is correct, so open the source when the claim matters.
Review privacy settings early: several apps use chats for training by default, and opting out takes a settings change. Avoid pasting passwords, private documents or sensitive personal details into any chatbot. Finally, remember lock-in: prompts, projects and memory are hard to move between tools, so keep important work in your own files as well.
Free or paid: how to decide
Start free on two apps and use them for real work for two weeks, covering the tasks you actually do daily rather than demo prompts. A chatbot that shines on trivia may stumble on your real workflow, whether that is drafting emails, debugging code, planning trips or summarizing documents. Pay only when a specific limit blocks real work, such as upload caps, image limits or reasoning depth on hard tasks. A better prompt often fixes what people expect an upgrade to fix, so learn prompting on the free tier before spending $20 per month.
Frequently asked questions
Which AI mobile app is best overall?
ChatGPT is the best all-round pick, covering chat, images, voice and coding help in one app with a generous free tier. Claude wins for writing quality, and Perplexity wins for cited research.
Is there a completely free AI app?
Yes. DeepSeek offers full chat with no subscription tier, and Meta AI core chat is fully free. ChatGPT, Claude, Gemini, Perplexity, Copilot and Poe all offer free tiers with limits.
How much does ChatGPT Plus cost?
ChatGPT Plus costs $20 per month, with Go at $8 per month sitting between free and Plus. Pro tiers run higher for power users. Check the vendor pricing page, since tiers change often.
Which AI app is best for research?
Perplexity, because answers link to sources that can be opened and checked. ChatGPT and Gemini also browse, but Perplexity cited format makes verification fastest on mobile.
Can AI apps replace Google search?
For direct questions, often yes, but not for everything. Search still wins for browsing many sources, shopping and local results, while chatbots win for synthesized answers. Use both and verify important claims.
Are my chats private in AI apps?
Not by default on every app. Several apps use chats for training unless settings are changed, so review privacy settings early and avoid pasting sensitive personal or work documents into any chatbot.
Sources we checked (8)
- https://learn.ynteractive.com/content/compare/free-vs-paid-ai-plans
- https://beginnersinai.org/best-free-ai-apps/
- https://toolradar.com/guides/best-free-ai-chatbots
- https://chatsmith.io/blogs/ai-guide/best-ai-chatbot-00302
- https://chatgpt.com
- https://claude.ai
- https://gemini.google.com
- https://www.perplexity.ai
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.