
Best for hands-free phone and home controls
Choose Google Assistant for hands-free tasks and smart-home control, ChatGPT for versatile writing and conversation, or Perplexity for answers designed around research.
| App | Google Play | Price | In-app purchases | Platforms | Age rating |
|---|---|---|---|---|---|
| 3.9 out of 51,346,810 ratings | Free | No | Everyone | ||
| 4.8 out of 566,117,409 ratings | Free | Yes$8.00 - $500.00 per item | Teen | ||
| 4.6 out of 52,094,615 ratings | Free | Yes$4.99 - $1,999.99 per item | Teen |
Ratings and age ratings come from the Google Play listings, read on Nov 7, 2026. Listings change over time.
Google Assistant, ChatGPT, and Perplexity all use AI to help with everyday questions and tasks, and all are available on Android. Their strengths differ: Google Assistant focuses on voice commands and device controls, ChatGPT on flexible conversation and creation, and Perplexity on finding and explaining information.
This comparison weighs their Google Play ratings and reach alongside their stated features, costs, and trade-offs. It will help you choose the app that fits how you want to get things done.
We compared the Google Play ratings, install counts, prices, ad status, and in-app purchase ranges available on November 7, 2026. These figures indicate popularity and store terms, but do not by themselves establish answer quality or privacy.
We also considered each app’s stated purpose and strengths and limitations. Google Play declares that ChatGPT shares device or other IDs and collects several categories of personal and usage data; it says data is encrypted in transit and deletion can be requested. No comparable data-safety details are included here for the other two apps.
Best forhands-free commands and smart-home control
Google LLC
Google Assistant is the clearest choice for speaking commands rather than carrying on a long text conversation. It can make calls and send texts hands-free, control compatible smart-home devices, and offer personalized recommendations. Its Google Play rating is 3.9 from 1,346,810 ratings, with 5 billion-plus installs.
Compared with ChatGPT and Perplexity, it is more oriented toward actions on a phone and connected devices than open-ended writing or research. It needs an internet connection, can misunderstand requests, and may use considerable battery; availability and functionality also vary by region.
Best forwriting, brainstorming, and flexible AI conversation
OpenAI
ChatGPT is the most versatile option for drafting, brainstorming, and asking follow-up questions in a conversational format. It supports multiple languages and receives ongoing feature updates. Google Play shows a 4.8 rating from 66,117,409 ratings and 1 billion-plus installs, the highest rating and review count among these three.
Unlike Google Assistant, it is not primarily a hands-free phone or smart-home controller; unlike Perplexity, research-focused answers are not its sole emphasis. It requires internet access, can give incorrect answers, and some features require a subscription. Google Play says it contains ads and offers in-app purchases.
Best forquick answers and topic exploration
PerplexityAI
Perplexity is the most research-oriented choice: it is built around answering questions and exploring a wide range of topics. It supports multiple languages, has a user-friendly interface, and is free to use without ads. Google Play shows a 4.6 rating from 2,094,615 ratings and 100 million-plus installs.
It is a more focused alternative to ChatGPT’s broad writing and conversation features, but less suited to hands-free commands and smart-home controls than Google Assistant. It requires an internet connection, has limited offline capability, and answers can occasionally be inaccurate.

Best for hands-free phone and home controls

Best for writing and creative conversation

Best for research-style answers without ads
Google Assistant is the strongest fit for voice commands, hands-free calls and texts, and compatible smart-home controls.
Choose Perplexity for a focused question-and-answer experience and topic exploration. ChatGPT is more versatile for combining research with writing, brainstorming, and follow-up conversation.
ChatGPT has the highest rating among the three, at 4.8 from 66,117,409 ratings. Google Assistant is rated 3.9 and Perplexity 4.6.
All three have internet-dependent features. Google Assistant and ChatGPT require an internet connection, while Perplexity has limited offline capability.
Reviewed compares apps independently. We don't make, own or distribute any of these apps and have no affiliation with their developers, Google or Apple. Names, icons and trademarks belong to their owners; store details and prices are shown for reference and can change.