2
Claude
Free plan; Pro and Max plans
Anthropic's AI assistant, strong at writing, analysis and coding.
Pick it if you need it on Android, iPhone and the web, you are a student and you make content.
Free planiPhoneAndroidMacWindowsWeb
At a glance
| App | Price | Platforms | Pick it if |
|---|---|---|---|
| Dia (the app you have) | Free download | Mac, Windows | - |
| ChatGPT | Free plan | Everywhere | you need it on Android, iPhone and the web |
| Claude | Free plan | Everywhere | you need it on Android, iPhone and the web |
| Microsoft Copilot | Free | Everywhere | you need it on Android, iPhone and the web |
| DeepSeek | Free app | iPhone, Android, Windows, Web | you want it free |
| Littlebird | Basic $0/month | Mac, Windows, iPhone | you need it on iPhone |
| Google Gemini | Free | iPhone, Android, Web | you need it on Android, iPhone and the web |
| Grok | Free plan | iPhone, Android, Web | you need it on Android, iPhone and the web |
| Le Chat by Mistral | Free plan | iPhone, Android, Web | you need it on Android, iPhone and the web |
1
ChatGPT
Free plan; paid plans
OpenAI's general-purpose AI assistant with voice and images.
Pick it if you need it on Android, iPhone and the web and you are just starting out.
Free planiPhoneAndroidMacWindowsWeb
3
Microsoft Copilot
Free; paid Microsoft 365 and Copilot plans vary
Microsoft's AI assistant for writing, summarising and images, tied into Office apps.
Pick it if you need it on Android, iPhone and the web.
Free planiPhoneAndroidMacWindowsWeb
4
DeepSeek
Free app; separate pay-as-you-go API pricing
A free AI chat assistant with web search, deep thinking and file uploads.
Pick it if you want it free and you need it on Android, iPhone and the web.
FreeiPhoneAndroidWindowsWeb
5
Littlebird
Basic $0/month; Plus $17/month billed annually, 14-day trial
AI assistant that learns from your meetings, screen and apps to take notes, draft replies and track tasks.
Pick it if you need it on iPhone.
Free planMacWindowsiPhone
6
Google Gemini
Free; paid with Google AI plans
Google's AI assistant, built into Android and Google apps.
Pick it if you need it on Android, iPhone and the web.
Free planiPhoneAndroidWeb
7
Grok
Free plan; paid plans from about $8/month
An AI assistant for chat, search, images, video and voice on web and mobile.
Pick it if you need it on Android, iPhone and the web.
Free planiPhoneAndroidWeb
8
Le Chat by Mistral
Free plan; Pro about $15/month
Mistral's AI assistant, now called Vibe, for chat, web search, content and code.
Pick it if you need it on Android, iPhone and the web.
Free planiPhoneAndroidWeb
We matched these apps to Dia by what they are for, who they suit and where they run, using our research on each app's official website and app store listing. We have not tested them hands-on for this page. Check the price on each app's own site before you buy.