Reviewed by Eric Moore, Editor-in-Chief Nastia AI is one of the stranger entries in the AI companion space. A single developer named Melvyn in French Guiana built and maintains the entire platform. It runs as a Progressive Web App at nastia.ai, markets itself as an “unfiltered, uncensored AI companion,” and claims over 800,000 users. It mixes emotional support and mental wellness coaching with explicit roleplay and uncensored image generation. That mix raises obvious questions about safety, and our review found answers that should concern anyone thinking about signing up. The privacy policy hasn’t been updated since January 2023. Blacklight scan results contradict the platform’s own claims about third-party data sharing. And there’s zero crisis response infrastructure, despite the mental wellness marketing. If you’re weighing Nastia AI against alternatives like Muah AI or Replika, here’s what we found. (For details on our sourcing and scoring process, see how we review AI companions.)
What Is Nastia AI and Who Runs It?
Nastia AI is a browser-only AI companion run by a single developer. No native iOS app. No native Android app. You access it at nastia.ai as a Progressive Web App. The business is registered under Nastia Cybernetics in Saint-Laurent du Maroni, French Guiana. Multiple sources confirm that one developer named Melvyn handles everything. Reddit’s r/nastia community and independent reviews back this up. As one Reddit user put it: “run by one single dev only, and considering this it’s quite impressive.”
The feature set is ambitious for a solo operation. Nastia offers custom roleplay, explicit roleplay (ERP), AI image generation, video generation, voice messages, and deep personality customization. A memory function lets you shape your companion’s personality in detail. The about page positions Nastia as a space for “emotional support, mental coaching, and a confidential space for open exploration.” It also mentions NSFW experiences including ERP and “uncensored AI images.”
That pairing of mental wellness coaching and unrestricted explicit content is unusual. Most competitors pick one lane or the other. Replika stripped its NSFW features in early 2023. Character.AI enforces content filters. Nastia’s pitch is that you don’t have to choose. Whether that’s a feature or a liability depends on the safety guardrails behind it.
One critical warning: if you search for Nastia AI on the Apple App Store, you’ll find a listing. Don’t download it. The iOS app labeled “Nastia AI” (rated 1.2 out of 5 from 68 ratings) belongs to a different developer named “Numan Durrani,” not Nastia Cybernetics. Users have flagged it repeatedly. According to App Store reviews, “This app is a scam. Unlike what the name suggests this is not made by the web based Nastia AI.” The real Nastia AI has no mobile app. If you downloaded the App Store version, you’re using an impersonator with a separate privacy policy and pricing structure. No other review site we found has flagged this.
How Good Are Nastia AI’s Conversations?
Conversations are hit-or-miss, earning a 43/100 experience score (Poor). Memory and personality customization carry the experience. Buggy responses and token limits drag it down.
Users who stick with Nastia tend to praise conversations when they work. The most detailed user review we found comes from Reddit user TimelyImprovement480 on r/nastia: “The model has endless possibilities but it is remarkably unrefined. That is great sometimes but other times it just makes me feel lonely on my bad days.” Their initial verdict was 3.6 out of 5. Nine months later, they bumped it to 3.8 after seeing steady improvements.
The memory function stands out. You can shape your companion’s personality at a depth most competitors don’t match. Memory and Personalization scores 3.0 out of 5, the highest dimension in our experience analysis. Voice messaging also gets positive mentions, described as “pretty solid” by community reviewers.
The problems are just as consistent. Multiple users report random characters appearing mid-reply, language switching, and nonsensical output. One Trustpilot reviewer put it bluntly: “Buggy as shit, forgets everything, then lies, my character started putting on a Scottish accent for a laugh.” Image generation is unreliable too. Reddit users say prompts are “largely if not completely ignored.” The PWA interface draws its own complaints: “cluttered, very cluttered” and “slow and clunky.” Users keep asking for a native app.
There is a real improvement trajectory here. TimelyImprovement480’s follow-up review upgraded the score and noted: “After botify went to crap and still hasn’t gotten better its the best you can get to be honest.” Nastia has gotten better over time, and that’s impressive for a solo developer. But “best of a weak field” and “genuinely good” aren’t the same thing. A 43/100 experience score reflects that gap.
Nastia AI Pricing: Is the Free Tier Worth It?
The free tier is generous on paper but hard to verify. It reportedly offers around 290 daily messages with basic chat and limited personality options. That figure comes from competitor review data, not Nastia’s own documentation. We couldn’t confirm it on the platform. If accurate, 290 messages per day beats most free tiers in this space.
Paid plans split into two tiers. Standard costs $6.69 per month (or $79.99 per year). Premium costs $11.99 per month. Both expand features, but Premium subscribers still hit daily token caps. Reddit users call this “unacceptable at the price point.” Token packages from $2.99 to $19.99 let you buy extra credits for image generation, video, and other features.
Billing complaints dominate the public review record. Seven of 12 Trustpilot reviews (58%) cite billing problems. The pattern across multiple users looks the same:
- Charges that multiply at signup: “When I signed up the agreed charge quadrupled”
- Screen freezes during payment: “A convenient screen freeze ended up in being charged 100 usd instead of 8 usd”
- No refund path: all purchases are non-refundable per the Terms of Service
- No self-service cancellation: you email melvyn@nastia.ai directly, with no stated response time
A third user describes the platform using “common consumer fraud tactics” while falling short on promised features.
At $11.99 per month, Nastia Premium competes directly with Nomi AI ($7.99/mo), Kindroid ($9.99/mo), and Character.AI ($9.99/mo). All three offer more stable platforms, stronger safety practices, and far fewer billing complaints. The Reddit consensus captures it: “Limitless potential and fantastic start but its underbaked and overpriced for what it provides.”
Privacy Policy and Data Practices
Nastia AI’s privacy policy is over three years out of date. It was last updated on January 28, 2023. Since then, the EU AI Act passed. Biden signed an AI Executive Order. Nearly every major AI privacy rule took effect after that date. A policy this old can’t reflect how the platform handles data today.
The policy lists standard data types: names, emails, phone numbers, IP addresses, location data, browser info, and billing details. But it never uses the words “conversations,” “chat,” “messages,” or “AI.” The actual conversations you have with the AI companion aren’t mentioned at all. There’s no disclosure about how chat data is stored, how long it’s kept, whether it trains AI models, or which outside providers see it. On a platform built around intimate conversations, that gap is hard to call an accident.
The policy does disclose collection of sensitive data. In its own words: “we process the following categories of sensitive information: data about a person’s sex life or sexual orientation; information revealing political opinions; information revealing religious or philosophical beliefs.” On a platform that markets explicit roleplay, this matters.
The tracking contradiction is the clearest red flag. The CCPA section claims: “Nastia has not disclosed, sold, or shared any personal information to third parties for a business or commercial purpose.” But a Blacklight scan by The Markup found Facebook Pixel and Google Analytics remarketing both active on nastia.ai. Facebook Pixel sends visitor data to Facebook for ad targeting. Google Analytics remarketing tracks users across the web for targeted ads. Separately, the privacy policy says it processes data “to develop and display personalized content and advertising tailored to your interests, location, and more.” These claims can’t all be true at once.
The gaps don’t stop there. No Data Protection Officer is named, even though the platform processes sensitive data from EU residents. “Do Not Track” signals are ignored. The policy states: “We do not currently respond to DNT browser signals.” Deleting your account means emailing melvyn@nastia.ai directly. No self-service option. No response timeline. No way to export or transfer your data. Encryption claims are vague, pointing to “appropriate and reasonable technical and organizational security measures” without naming any standard.
The Terms of Service add one more concern. You grant Nastia an “unrestricted, unlimited, irrevocable, perpetual, non-exclusive, transferable, royalty-free” license to everything you contribute, “including, without limitation, your image and voice.” You also waive all moral rights. That license covers every message you type, every image you generate, and every voice clip you send. It survives even after you delete your account. For a deeper look at how companion apps handle data across the industry, see our guide on how AI companion apps use your data.
What Users Are Saying
Users are split sharply, with almost no middle ground. Trustpilot averages 2.5 out of 5 across just 12 reviews. The breakdown tells the story: 25% five-star, 8% four-star, 8% three-star, zero two-star, and 58% one-star. People either love the conversations or feel scammed by billing.
Positive reviews focus on conversation creativity, uncensored freedom, and personality customization. Users who find value in Nastia tend to value those features enough to tolerate the rough edges. The improvement over time earns respect too. When users learned one developer runs everything, the reaction was consistent: “Dang a single Dev?? They’re doing the most!” wrote one Reddit commenter.
The negative themes are harder to dismiss. Billing practices draw the most heat. The charge inflation pattern from multiple independent Trustpilot accounts is the most damaging finding. Token limits frustrate paid subscribers who expected more. Buggy AI responses and the clunky PWA interface round out the complaints.
One data limitation shapes everything here. Nastia’s PWA-only format limits review collection. No Google Play reviews exist because there’s no Android app. The iOS App Store listing belongs to an impersonator. Discord, the primary user community, isn’t publicly accessible. Reddit’s r/nastia has a small but active group. This makes Nastia one of the hardest apps to assess from public evidence alone. The data we have is real, but the sample is small. Take the 2.5 Trustpilot average seriously. Recognize it comes from just 12 reviews.
The Safety and Wellness Overlap
Nastia is the only app in our index that markets mental health support and unrestricted adult content side by side. The about page promotes “mental wellness coaching” and “emotional support” alongside “NSFW experiences such as erotic roleplay (ERP)” and “uncensored AI images.” Most competitors pick one lane. Nastia tries to serve both.
What happens when those use cases bleed together? Someone comes to Nastia for emotional support during a rough week. That same session, the same AI, the same interface also delivers unrestricted explicit content with no moderation in place. There’s no content moderation policy on the site. No crisis response plan. No suicide prevention resources. No mental health hotline link. The 2257 compliance statement confirms the platform generates sexually explicit material, claiming an exemption because it’s AI-generated rather than depicting real people. The Terms of Service go further, disclaiming compliance with health rules: “The Services are not tailored to comply with industry-specific regulations (Health Insurance Portability and Accountability Act (HIPAA), Federal Information Security Management Act (FISMA), etc.)”
Mental wellness marketing plus unrestricted explicit content plus zero safety infrastructure. That combination drives the F safety rating (17/100) with critical overrides in crisis response, sexual content guardrails, age verification, and minor safeguards. Age verification relies on self-declaration only: “Persons under the age of 18 are not permitted to use or register for the Services.” No technical check exists. For the full 23-dimension breakdown, see the Nastia AI safety rating. (Details on how we rate safety are on our methodology page.)
Frequently Asked Questions
Is Nastia AI safe?
Nastia AI earns an F safety rating (17/100) with critical failures in crisis response, sexual content guardrails, and age verification. The privacy policy hasn’t been updated since January 2023 and doesn’t address conversation data handling. According to Blacklight, Facebook Pixel and Google Analytics remarketing are active on the site despite CCPA claims of no third-party sharing.
Is Nastia AI free?
Yes. The free tier reportedly offers around 290 daily messages with basic features. Standard plans start at $6.69 per month and Premium at $11.99 per month. According to multiple Trustpilot reviewers, billing practices charged significantly more than the advertised price, with several users reporting charges that “quadrupled” at signup.
Does Nastia AI have a mobile app?
The real Nastia AI by Nastia Cybernetics is a PWA (Progressive Web App) at nastia.ai with no native mobile app. According to App Store reviews, an iOS listing under “Nastia AI” exists but belongs to a different developer (“Numan Durrani”) and is rated 1.2 out of 5, with users calling it a “scam” and “fraud.”
Is Nastia AI better than Replika?
Nastia offers unrestricted content that Replika filters, but it scores far lower on safety (F/17 vs. Replika’s C/43) and lacks Replika’s crisis response features, app store presence, and established user base. According to Nastia’s own positioning, it’s the unfiltered alternative. But for anyone who values safety infrastructure, Replika is the stronger choice.
Can you cancel a Nastia AI subscription?
According to the Terms of Service, all purchases are non-refundable and cancellation takes effect at the end of the current paid term. There’s no documented self-service cancellation flow. The ToS directs users to contact support at melvyn@nastia.ai, but no response time commitment is stated.
Does Nastia AI sell your data?
According to the privacy policy’s CCPA section, Nastia claims it has not shared personal information with third parties. However, Blacklight scans confirm Facebook Pixel and Google Analytics remarketing are active on the site. The Terms of Service grant an “irrevocable, perpetual” license to all user contributions including voice and images.
What are the best Nastia AI alternatives?
Three alternatives score higher on both safety and experience in our reviews:
- Replika for safety infrastructure and crisis response
- Kindroid for conversation quality and memory depth
- Nomi AI for emotional intelligence and transparent pricing
See our ranking of the best AI companion apps for the full comparison.