Sleek
Sleek is an AI mobile app designer. Describe an idea or attach a reference image, and it generates editable iOS and Android screens you can export to Figma as native layers or to HTML and React code.
What is Sleek?
Sleek is an AI mobile app designer operated by 140g Labs LLC, a Wyoming limited liability company. You describe an app in plain language or attach a reference image, and the AI generates complete iOS and Android screens covering layout, components, copy and styling, which you then refine in a visual editor.
What separates Sleek from a general-purpose AI interface generator is that it only does mobile. The vendor argues that every layout, component and interaction pattern follows mobile conventions: iOS Human Interface Guidelines, Material Design, native navigation, accurate device dimensions and tap-target sizing. The claimed result is something that reads like a real application rather than a website cropped to phone width.
Output is deliberately portable. Every plan includes one-click export to Figma, where screens paste in as native, fully editable layers with no plugin required, and code export to HTML or React with Tailwind CSS. Designs can also be pushed to AI builders such as a0, Anything, Cursor and Claude Code. Users keep full ownership of what they generate, including for commercial and client work.
The second distinctive angle is that Sleek is agent-native. It publishes a REST API with an OpenAPI specification and an official agent skill installable in a single command. Claude Code, Cursor, Codex or any other coding agent can create a project, send the user's intent as one chat message, poll the run and pull back screenshots and code, while the user watches the screens being drawn in a live editor. A device flow hands over the API key without the user ever pasting a raw secret.
Work is organised into multi-screen projects with a consistent design system, shareable preview links and per-seat team collaboration. A template library and a gallery of forkable reference designs provide starting points. Usage is metered in AI credits, roughly 30 to generate a screen and 5 to 30 to edit one.
Around the core product sit seven free browser-based utilities, among them an AI app icon generator, an icon resizer, a green-screen remover and an image-to-SVG converter. Sleek is a web product only, with an English-language interface.
What it does
- Generate complete iOS and Android app screens from a plain-language description
- Turn an attached reference image or hand-drawn sketch into a polished mobile design
- Edit layout, components, copy and styling visually after generation
- Export screens to Figma as native, editable layers with no plugin required
- Export screens to HTML or React with Tailwind CSS
- Let a coding agent design an app autonomously through the REST API
- Share preview links and collaborate with a team on multi-screen projects
When to use Sleek / When not to
A quick filter to help you decide if Sleek is the right fit.
When to use Sleek
- Non-technical founders who need credible app screens without hiring a designer or waiting weeks for revisions
- Product managers and marketers who have to make an app idea visible to stakeholders quickly
- Mobile and front-end developers who want a high-fidelity starting point instead of hours in Figma
- Designers who want to skip early exploration and begin from a generated screen they can restyle in native Figma layers
- Teams running coding agents such as Claude Code, Cursor or Codex that can drive the design step through the REST API
When not to use Sleek
- Anyone designing for the web or desktop: Sleek deliberately covers mobile screens only
- Teams expecting a Figma replacement rather than a fast first draft to build on, which is how the vendor itself frames it
- Buyers with EU procurement requirements, since no DPA, no Article 27 representative and no hosting location are published
- Organisations that need analytics tracking switched off, as the vendor states no opt-out mechanism is offered
- Users who need a non-English interface, a mobile app, a desktop client or a browser extension
How to use Sleek
A typical end-to-end flow, from setup to results.
- Create an account with an email address, GitHub or Google; the free plan asks for no credit card
- Describe the app you want in plain language in the chat, or attach a reference image or sketch
- Optionally let Auto Match pick a visual style, or choose one yourself
- Let the AI generate the mobile screens, then review them in the editor
- Refine layout, components, copy and styling visually, screen by screen
- Export to Figma by clicking the Figma button and pasting into any file, where designs arrive as native editable layers
- Or export to code as HTML or React with Tailwind CSS
- Share a preview link with stakeholders on a paid plan
- To use a coding agent, copy the prompt from the agents page into Claude Code, Cursor or Codex and let it install the official skill
- Connect the agent to your account through the device flow or the setup page, then let it drive projects via the REST API
Pros & Cons
Pros
- Genuine mobile specialisation, argued through iOS Human Interface Guidelines, Material Design, real device dimensions and tap-target sizing
- Portable output: native Figma layers with no plugin, plus HTML and React with Tailwind, on every plan
- Full commercial ownership of the designs and code you generate, stated explicitly
- A permanent free plan with no credit card required, so the workflow can be evaluated end to end
- A documented public REST API with an OpenAPI spec and an open-source agent skill on GitHub
- A device flow that lets an agent obtain an API key without the user handling a raw secret
- Named subprocessors in the privacy policy and a stated commitment not to train models on customer content
Cons
- Analytics tracking is on by default and the vendor states no opt-out mechanism is offered
- Session recording, replay and console logging make behavioural collection unusually broad
- No DPA is published, and neither an Article 27 EU representative nor a data protection officer is designated
- No hosting country or region is disclosed, while international transfers are acknowledged
- Refunds are narrow: 24 hours, unused credits only, minus a 30 percent processing fee
- The API is reserved for the Pro and Team plans, and the interface is English only
- The publisher is very young, incorporated in February 2026 at a registered-agent address
Pricing & Plans
Sleek operates on a freemium basis. A permanent free plan is available without a credit card and covers one project with limited AI usage plus one-time trial credits. The lowest paid entry point is the Starter plan at USD 39.00 per month on monthly billing. Pro is USD 69.00 per month and Team USD 99.00 per user per month. All three paid tiers currently carry an Early Bird badge, so these amounts should be read as potentially promotional. Additional credits are sold to Pro and Team subscribers at USD 15.00 per 5,000 credits, and do not expire.
- Free — USD 0 — 1 project
- limited AI usage
- one-time trial credits
- limited code and Figma exports
- no credit card required
- Starter — USD 39.00 per month — 3
- 000 AI credits per month (about 100 screens)
- 5 projects
- unlimited code and Figma exports
- export to AI builders
- shareable preview links
- private projects
- Pro — USD 69.00 per month — 20
- 000 AI credits per month (about 650 screens)
- unlimited projects
- REST API and agent skill
- option to purchase additional credits
- Team — USD 99.00 per user per month — 30
- 000 AI credits per month (about 1
- 000 screens per seat)
- team collaboration
- priority support
- centralised billing
Data, GDPR & hosting
A consolidated view of how Sleek handles your data.
GDPR overview
The privacy policy, effective 14 March 2026, addresses the GDPR directly. A dedicated section for EEA users lists the rights of access, rectification, erasure, restriction of processing, portability, objection and withdrawal of consent, exercised by writing to support@sleek.design, with a stated response time of 30 days. A separate section sets out the legal bases relied on: contract performance, legitimate interests for analytics and error tracking, consent, and legal obligation. Third-party processors are named: PostHog, Supabase, Stripe and Resend. Three gaps deserve mention. No Article 27 EU representative is designated and no data protection officer is named. Analytics tracking is enabled by default and the vendor states that no opt-out mechanism is currently offered. No hosting country or region is disclosed, although international transfers are acknowledged.
Who owns the data?
Under the Terms of Service you retain ownership of all User Content you create, upload or provide, including project designs, prompts, uploaded images and custom components. You grant 140g Labs LLC a worldwide, non-exclusive, royalty-free licence to store, process, display and back up that content, to use it to provide and improve the Service, and to run it through their AI systems. That licence terminates when you delete the content or your account, except for material already shared with others or kept for legal compliance. Content produced by the AI is handed to you, and the vendor states you have full ownership of every design and every line of code you create with Sleek.
Reuse rights
Yes, and the vendor is unusually direct about it. You have full ownership of the designs and code you generate and may use them for personal projects, commercial applications and client work without asking permission. AI-generated content may be used, modified and distributed, subject to the Terms. Two caveats are stated plainly. First, Sleek gives no guarantee that AI output is accurate, complete, original or non-infringing, so reviewing and validating it before production use is your responsibility. Second, because similar prompts from different users can produce similar outputs, 140g Labs LLC disclaims responsibility for resemblance between results created by different customers.
Data retention & training
Hosting summary
Sleek discloses very little about where data physically lives. The privacy policy names no hosting country and no region. It acknowledges that information may be transferred to and processed in countries other than your own, and states that appropriate safeguards are in place without describing them. What is disclosed is the processor chain: PostHog for analytics, event tracking, session recording and error monitoring, self-hosted by the vendor at gatto.sleek.design; Supabase for authentication and database services; Stripe for payment processing, with card details never stored by Sleek; and Resend for transactional email. Security measures listed are encryption in transit over HTTPS/TLS, secure authentication mechanisms, access controls and regular security audits, with the usual caveat that no transmission or storage method is completely secure. For reference only, the domain currently resolves to an anycast address announced by Amazon's network, but that is an observation about delivery infrastructure rather than a commitment by the vendor. Anyone with a data residency requirement should ask before subscribing.
Things to keep in mind
Risks and trade-offs to weigh before adopting Sleek.
- Analytics tracking is enabled by default and the vendor states no opt-out mechanism is offered, so usage is observed whether or not you want it to be
- Session recording, replay and console logging are in scope; the privacy policy itself advises against putting personal or confidential information in prompts
- No DPA, no Article 27 EU representative and no data protection officer, which can stall an enterprise or public-sector purchase in the EU
- No hosting country or region is disclosed while international transfers are acknowledged, so data residency cannot be verified
- Paid prices carry an Early Bird badge and the terms reserve the right to change pricing with 30 days' notice, so today's rate may not be tomorrow's
- The annual price quoted for the Pro plan is inconsistent across the site's own pages, so confirm the yearly figure before committing
- Leaning on generated screens can quietly erode design judgement; the terms disclaim any guarantee of accuracy, originality or non-infringement, and cap liability at the greater of 12 months of fees or USD 100
Setup & Integrations
Technical difficulty
Very low through the interface. You sign up with an email address, GitHub or Google, describe your app in plain language and start editing, and the free plan needs no card. Figma export requires no plugin, since you paste straight into a file. The agent route is nearly as simple: copy one prompt into Claude Code, Cursor or Codex and the agent installs the official skill and connects your account itself. Wiring the API by hand asks slightly more, through a single npx command or the OpenAPI spec, Bearer authentication and a device flow. Nothing is installed locally.
Deployment
Integrations
Supported languages
Behind Sleek
Social
Resources
All the official URLs gathered for verification and reference.
Alternatives
Tools that compete with or complement Sleek.
Frequently asked questions
What exactly does Sleek do?
Is there a free version?
Can I export designs to Figma or to code?
Can Claude Code, Cursor or Codex use Sleek for me?
What is the cheapest paid plan?
How do AI credits work?
Who owns the designs, and can I use them commercially?
Does Sleek train its models on my content?
Is Sleek GDPR compliant, and what about data retention?
What is the minimum age, and can I get a refund?
Should you pick Sleek?
Sleek makes a narrow bet and defends it well. By covering mobile screens only, it can justify its output against iOS Human Interface Guidelines, Material Design, real device dimensions and tap-target sizing, which is a more concrete argument than most AI interface generators offer. It is also refreshingly honest about its place in a workflow: the vendor states outright that it does not replace Figma but gets you a fast first draft to build on.
Two things make it more than a novelty. Output is genuinely portable, with native Figma layers requiring no plugin, HTML and React with Tailwind, and full commercial ownership of what you generate. And the agent-native angle is unusually well executed, with a public REST API, a published OpenAPI specification, an open-source agent skill and a device flow that spares users from handling raw API keys.
The reservations are mostly about governance rather than the product. Analytics tracking is enabled by default with no opt-out, session recording and console logging are in scope, no DPA exists, no Article 27 EU representative or data protection officer is named, and no hosting location is disclosed. Refunds are narrow. The publisher, 140g Labs LLC, was incorporated in Wyoming on 3 February 2026 at a registered-agent address, so there is very little corporate track record behind it.
For a founder, product manager or developer who needs believable app screens in an afternoon, the free plan makes the decision cheap and the USD 39.00 Starter tier is a reasonable step up. For a regulated or EU-procurement buyer, the missing privacy paperwork is likely to be the blocker long before the design quality is.
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