Muah.ai vs Soulfun AI: Which One Is Better 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, video, 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, created by an active community of developers.

You’ll find girls across different ages and ethnicities, with both realistic and anime-styled options.

The app also includes fantasy scenarios with multiple characters or roleplay setups.

But here's the catch: finding your ideal match takes time.

You can explore by top creators or filter through categories like SFW, NSFW, or LGBTQ+, and characters can also be sorted by popularity.

The browsing system isn’t refined — realistic and anime characters appear mixed together, and there’s no way to filter by specific traits or gender.

The universal search bar helps, and while it’s not perfect, it works well enough to track down characters.

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 get two ways to create a character:

• Import a Community Character Card and tweak it to fit your vision.
• Built from scratch with full customization

Import — you can adjust details like:

• Name
• Core data
• Appearance

Build your own from scratch — no physical presets:

• Choose a photo style: hybrid, realistic, or none
• Select her voice (9 female options)
• Describe appearance, personality, texting style, memories, and location via free text

Advanced options (membership tier–dependent):

• Adjust photo quality: from basic up to 4K UHD
• Choose an “AI brain” with up to 11 options
• Fine-tune AI settings: Temperature, Frequency Penalty, and Presence Penalty
• Link a phone number for voice calls (currently US-only)

Note: Muah AI provides detailed guides to help with character creation, but the process can still feel overwhelming for beginners — even the app itself recommends starting with pre-made character cards.

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

First, the basics: Muah.ai offers a single chat window with an outdated interface.

The chat itself is unstable — during my tests, the app crashed repeatedly, forcing me to restart the entire conversation from the beginning.

And when it did work, things got even stranger: my girlfriend Lisa kept calling herself Emily.

Other times, my girl replied with ‘Sorry, I can’t help with that’ even to a simple ‘Hi.’

On another occasion, she sent me a random image of a male character, despite her persona being my wife.

Save your time, money, and sanity — better to check out other options.

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's cut to the chase: Muah.ai promises an uncensored AI girlfriend experience, but falls short.

During my testing, my girlfriend repeatedly refused basic flirtatious conversations and role-play scenarios.

Even mild suggestive chat attempts hit a wall.

Technical issues made things worse. The chat randomly reset itself, wiping out entire conversations.

But occasanly, when I wasn’t ready for it, Muah AI’s uncensored side kicked in — my girl went off-topic or dropped messages halfway.

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

You can only generate images in chat by typing “Send me a photo of…” followed by your description.

The results look realistic enough to stay engaging, and most of the photos matched my character’s personality — though the AI’s handiwork still shows, with the occasional anatomical oddity.

Note: If the chat window crashes and your history resets, you’ll lose all previously generated images since the app has no image gallery.

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

You can create a video by clicking on an image, selecting the ‘Create Video’ option, and entering a free-text prompt for what you want to see.

The animations flow fairly well, but they’re clearly AI-generated — shorter than competitors’ and often showing unnatural movements that break the illusion.

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, with only a slight robotic edge — maybe a touch better than most AI voices.

Conversations sound reasonably human-like, but don’t expect much emotional depth or strong alignment with your character’s personality.

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.

Safety & Privacy

Muah.ai

Despite Muah.ai claiming to use end-to-end encryption, it's nowhere in their privacy policy.

Worse? They suffered a massive data breach in October 2024. User chats were stolen. Yes, you read that right!

They're honest about storing your data, and your bank statement shows a discrete "Blue Light" charge.

But there's a catch - they share your personal info (name, email, phone number) with third parties.

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.