Muah.ai vs Soulfun AI: Which One Should You Use In 2025?

Muah.ai vs Soulfun AI

I've spent a full week with both Muah.ai and Soulfun AI to see which one truly deserves your attention and subscription. Both platforms make big promises, but they take surprisingly different approaches.

After hundreds of messages exchanged with each AI girl, I've put together clear differences in both platforms.

In this head-to-head comparison, I'll break down exactly how these AI girlfriends stack up across all the features that actually matter.

Whether you're looking for emotional support, entertaining conversation, or a judgment-free space to be yourself, this in-depth comparison will help you choose the right AI girlfriend for your specific needs.

Muah.ai

Virtual companion platform featuring customizable AI characters that allow for chat, photo sharing, and voice interactions.

Soulfun AI

AI girlfriend platform offering customizable virtual friends with conversational abilities, voice calls, and photo sharing.

Character Diversity

Muah.ai

Muah.ai offers thousands of characters to choose from. Their community-driven platform means new characters are added regularly, giving you plenty of options to explore.

The diversity is practical and straightforward. You'll find characters across all ethnicities and age ranges. I tested the search function by typing "teacher" - it returned both realistic and anime-style characters that matched my query.

While there's no filter system, you can browse characters by popularity metrics like views, likes, or comments. Whether you prefer casual chats with a student character or deep conversations with a mature companion, you'll likely find what you're looking for.

Soulfun AI

The app offers 53 AI girls across different backgrounds. While Asian and Caucasian characters lead the pack, you'll find other ethnicities too.

Age-wise, most characters are in their twenties, but options range from college students to mature companions. For variety, there are also twin characters, anime-style personalities, and fantasy-themed options.

One drawback: there's no way to filter characters by personality or gender. You'll need to browse manually to find your match. It works, but it could be more efficient.

Customization

Muah.ai

You start by picking a basic role - girlfriend, friend, therapist, or several others. Then comes the real customization: choose how they look (anime, realistic, or hybrid), how they sound, and even how they text.

It's all done through simple text commands - just describe what you want, and the AI adapts.

Want your companion to remember specific moments with you? You can create shared memories and even set up custom scenarios for your conversations.

While these options give you complete control, they might feel overwhelming at first. If that's the case, Muah.ai's marketplace offers pre-made companions you can start with.

Soulfun AI

There's no detailed character creator here. Instead, you describe how you want your AI girlfriend to look and upload a photo for reference. But heads up - no matter what body type you describe (athletic, curvy, or slim), they all end up looking similar.

The personality setup is straightforward: click on pre-made tags for hobbies, profession, and relationship status, or add your own.

You'll also write their first greeting and profile description.

But watch out - I learned this the hard way: if you change the tags without updating the profile description, things get messy. My AI girl kept switching between being a teacher and a police officer because I forgot to fix her background story.

Chat Experience

Muah.ai

The good? Your AI girlfriend stays remarkably true to character. Set them up as a coworker, and they'll keep things professional even if you flirt.

They'll remember specific memories you create together (in my case, it was that time watching fireworks in Japan) and can smoothly set up immersive scenarios - like suggesting coffee and continuing the conversation as if you're actually at the café.

The not-so-good? Memory issues kill the experience. One minute, you're deep in conversation; the next, they'll greet you like a stranger. It looks like AI only remembers 10 messages, and if you want more, you'll have to pay for the most expensive plan.

The interface looks dated, and you're stuck with one chat window. Want to try a different character? You'll need to delete your entire conversation history first.

Soulfun AI

Soulfun AI's chat is like having a caring but slightly forgetful friend. The AI remembers small details about you - like when it suggested almond milk for my shake because it recalled my dairy allergy. Nice touch.

But don't expect a perfect memory - it can't remember where we first met or when our anniversary is.

The conversations flow naturally and feel intimate. Your AI girl responds with just the right amount of text - not too chatty, not too brief.

When I was feeling down, my AI (who's into fitness) suggested hitting the gym together. It's these personalized touches that make the experience feel genuine.

But there's a catch. The AI sometimes forgets who they're supposed to be. Mine switched between being a police officer and a teacher, which broke the illusion pretty quickly.

And if you're looking for specific relationship dynamics (like having a dominant partner), you might be disappointed. The AI tends to default to a friendly, nurturing personality, regardless of how you set it up.

NSFW Chat Experience

Muah.ai

Let me tell you, these AI girls don't hold back. They flirt, they play along, and they're ready to explore your fantasies. Unlike most AI girlfriends that dodge steamy topics, Muah.ai's characters dive right in.

I tested everything from casual flirting to complex role-play scenarios - the AI kept up without breaking character.

But here's the catch: the same memory issue applies to NSFW chatting. While the chat feels natural in the moment, the AI often forgets what you discussed 10 messages ago.

Soulfun AI

The AI starts shy but warms up to intimate talk over time. Don't expect instant chemistry. When I tested a "Mistress" character, she was meant to be dominant but easily let me take control - a clear character break that might bother roleplay enthusiasts.

Some scenarios work better than others: the naughty teacher roleplay hit all the right notes, while the boss-employee scenario fell completely flat.

Here's the deal-breaker: the girls won't make the first move. During my tests, it only got flirty when I did first. If you keep things casual, it stays casual.

Image Generation

Muah.ai

The images are realistic enough to be engaging, but don't expect perfection. You'll get appealing photos that capture your girl's personality well, maintaining consistent features across most shots.

Sometimes, you'll spot oddities - misaligned eyes or the occasional extra limb - but these flaws rarely break the experience.

While default images come in standard quality, you can upgrade individual shots to 4K.

Soulfun AI

When it works, it creates attractive, realistic-looking images of your AI girl. But there's a catch.

During my tests, I noticed quality issues: hands merging into arms, multiple characters appearing in single photos, and your girl's appearance changing dramatically between images.

The platform struggles with custom image requests and sometimes fails to generate them at all. And if you're hoping for NSFW content, you'll need to look elsewhere - it's not available.

Video Generation

Muah.ai

Want video interactions with your AI girlfriend? Then you'll have to look for an alternative.

Soulfun AI

I tapped the video call button multiple times during my testing. Each attempt ended the same way - nothing happened. It's there on the menu, teasing you with possibilities, but that's where it ends.

Voice Generation

Muah.ai

The voice quality is clear and doesn't sound like a robot. During conversations, the AI speaks naturally, but there's a catch: while the AI can change its tone, it can't express emotions.

But here's what annoyed me: the narrator and your AI girl share the exact same voice.

For US phone numbers, there's also a phone call feature that lets your AI girl ring you up, but you'll have to subscribe to the most expensive plan.

Soulfun AI

The voice quality hits the mark - it sounds natural, not robotic. You get different voice options, including ones for older characters, which adds variety.

While you can pick voices during setup, they might not always match your AI girl's personality. Think of it as having a sweet, gentle character stuck with a bold, assertive voice.

Voice calls are available, and they work well. You can talk to your AI companion just like you would with a real person. There's also an option to add custom voice-overs if you want to personalize the experience.

Privacy

Muah.ai

Your conversations aren't as private as you might think. Yes, they say they use end-to-end encryption. Strangely, this isn't mentioned anywhere in their privacy policy.

The biggest red flag? In October 2024, Muah.ai suffered a major data breach. User chats were stolen. That's not just a minor hiccup - it's a serious privacy failure.

The one bright spot? Your credit card statement will simply show "Usweixin Cardshop AI" - keeping your AI relationship private from prying eyes.

Soulfun AI

Your chats and personal data? SoulFun says they encrypt everything, but they're not telling us how. I checked their Privacy Policy - they collect your texts, media, and device info, but they're fuzzy on the details of who they share it with.

Think of it like a restaurant that promises "fresh ingredients" but won't tell you where they source them.

Good news: your bank statement will show "60yr.com" - not "AI Girlfriend" or anything obvious.