AI companion vs AI girlfriend: what separates them, and which to choose

The key differences at a glance

What AI companion apps focus on

Companion apps sell growth and support more than romance. Replika's homepage calls it "the AI friend to do life with", promises it "always remembers what matters" and says it has one goal: to help you flourish. It scores 7.1 in our data and costs from $4.17 a month. In our data its free plan covers chat, with romance and calls on the paid plan.

Companion apps are also more likely to be in the app stores. Of the 31 apps we track, Nomi AI, Kindroid and Replika have a native iPhone app and Nomi AI, Kindroid, Replika, Muah AI and Anima have a native Android app, and several of those are companion apps rather than girlfriend apps. Replika's App Store rating is 17+, and Anima's Google Play rating is Everyone even though its terms require users to be 18.

What AI girlfriend apps focus on

AI girlfriend apps are built around the relationship fantasy: a partner who flirts, remembers your dates and sends pictures. 30 of the 31 apps we track generate pictures, 27 let you design her from scratch, and 29 allow 18+ chat after an age check. Many add voice notes, video and live calls.

Most run in the browser rather than as store apps, so you sign up on the website and add a shortcut to your home screen. Our ranking of the best AI girlfriend apps scores them on conversation, memory, pictures, value, voice and trust.

Apps that sit in between

The line is blurry. Nomi AI calls itself an "AI Companion with a Soul" and stresses memory, yet our data lists it as allowing 18+ chat, and its App Store listing is rated 18+. It scores 8.2 and costs from $8.33 a month. Candy AI, a girlfriend app, also offers male characters and interactive stories, and Replika includes romance on its paid plan.

In practice, many people use a girlfriend app as a companion and a companion app as a partner. What matters is how the app lets you set the relationship, and whether it pushes you toward content you did not ask for. Our Nomi AI vs Replika comparison puts the two best-known companion-style apps side by side.

Which should you choose?

• You want a friend to talk to daily, without romance or explicit content: a companion app. See our Replika review and Replika alternatives.
• You want flirting, dates and pictures: an AI girlfriend app, starting with a free plan.
• You want a long relationship that remembers you: either type, as long as it has long-term memory. 20 of the 31 apps we track advertise it.
• You want 18+ content: an AI girlfriend app, since companion apps mostly do not allow it.
• You want a native phone app: companion apps are more likely to have one.

If you are unsure, try one of each on a free plan for a week: 30 of the 31 apps we track have one. Notice which app you open without thinking about it, and whether the conversations leave you feeling better or just keep you scrolling. That tells you more than any feature list.

Rules and safety apply to both

The law does not care about the label. New York's AI companion law covers any system designed to simulate human relationships, whether as a friend or a romantic partner, and California's SB 243 covers any chatbot capable of meeting a user's social needs. Both require clear notice that you are talking to an AI and crisis protocols for users who mention self-harm.

The privacy risks are the same too: every message is stored on the company's servers. Italy fined Replika's developer 5 million euros in 2025 over age checks and its privacy notice, which shows a companion label is no guarantee of better data handling. Our guide on whether AI girlfriend apps are safe has a checklist that works for both types.