AI apps on Android: what they actually do, and which ones are worth installing
Chat assistants, image generators, photo editors. The label "AI" now sits on thousands of listings, and the apps behind it do very different things. Here is a plain guide to the categories, and how to judge an app before you install it.
Assistants: the ones you talk to
An assistant app is a text box connected to a language model. You ask a question, it answers; you paste a paragraph, it rewrites it. What separates them in practice is not the underlying model but the everyday details: whether answers are free or metered, whether the app keeps your conversation history, whether it works in your language, and how much of the screen is advertising.
The app from the company that popularised the format. Free to use with an account, with paid tiers for heavier use and newer models.
View detailsImage generators: from a sentence to a picture
These take a written description and return an image. Quality varies enormously between apps, and so does the business model: most are free for a handful of generations per day and then ask for a subscription. Before paying, generate a few images on the free tier and check the resolution you actually get, whether the result carries a watermark, and what the terms say about using the images commercially.
A prompt-to-image generator with style presets, free generations per day and a subscription for higher volume and resolution.
View detailsPhoto editors: AI applied to a picture you already have
This is the largest and most commercial group: background removal, retouching, cartoon and avatar filters. They are the easiest to try, because you can judge the result on your own photo in under a minute. Two things to watch: how many free exports you get, and what the privacy policy says about the photos you upload.
A full photo editor with generative tools layered on top, aimed at people who want to finish an edit rather than experiment.
View detailsHow to judge an AI app in two minutes
Read the rating alongside the install count. A 4.6 average from a thousand people says much less than a 4.2 from ten million. Check the update date on the store listing: this category moves fast, and an app untouched for a year is usually abandoned. Open the in-app purchase list before installing, because the difference between "free" and "free trial" is often only visible there. And be sceptical of screenshots that show results no app can produce on a phone.
The privacy question
Most of these apps send your input to a server: that is where the model runs. It means your prompts, and sometimes your photos, leave your device. That is not automatically a problem, but it is worth knowing which apps state clearly what they keep, for how long, and whether your content is used for training. The store listing's data-safety section is the fastest place to check.
The category is young and crowded, and the gap between the best app and the tenth best is wider than the ratings suggest. Try two or three before you settle, and only pay once one of them has already proved useful to you.
