⚡ Top userstack Dealsbest offers — no code needed
userstack user detection API, save 15% with annual billing
Get 15% off when you choose yearly billing for userstack's user-agent lookup API. Detects device, browser, and OS in real time for developers.
Any userstack plan gets 30% OFF
Apply 30% discount to userstack's API tiers. Real-time device and browser detection via lightweight JSON and XML endpoints.
Upgrade your userstack plan, save 30%
Switch to a higher tier at userstack and receive 30% off. User-agent detection API for device, browser, and OS identification.
New userstack customers get 25% OFF
First-time users save 25% on userstack's API service. Detect user agents, devices, and browsers with real-time lookups.
userstack first-year subscription, 20% discount
Start with 20% off your opening year at userstack. Real-time user-agent detection for identifying devices, browsers, and operating systems.
userstack Pro plan members save 30%
Professional tier pricing drops 30% at userstack. User detection API delivers fast browser, device, and OS identification.
Business plans at userstack, 30% cheaper
Enterprise users get 30% off userstack business subscriptions. JSON and XML API for real-time user-agent and device detection.
userstack team plans cost 25% less
Collaborative subscriptions at userstack drop 25%. Lightweight API for detecting browsers, devices, and operating systems.
Students save 20% at userstack
With student verification, get 20% off userstack subscriptions. Real-time user-agent lookup API for device and browser detection.
Renew your userstack subscription, save 20%
Extend at userstack and keep 20% off your next term. User detection API for real-time device, browser, and OS identification.
Any userstack subscription costs 25% less
Limited-time pricing: 25% off all tiers at userstack. Lightweight user-agent detection API for production environments.
userstack yearly plans get 20% OFF
Annual subscriptions at userstack drop 20%. Real-time API for detecting user devices, browsers, and operating systems.
Launch with userstack, 30% OFF first year
New accounts save 30% on their opening year at userstack. Reliable user-agent lookup API for device and browser detection.
userstack plans discounted 25%
All pricing tiers at userstack drop by 25%. JSON and XML API for real-time user-agent, device, and browser identification.
Upgrade at userstack and take 20% OFF
Move to a higher plan at userstack at 20% below standard price. User detection API for device, browser, and OS data.
How to use userstack deals
- Pick a deal above and hit Get Deal — userstack opens in a new tab with the offer already applied.
- Add what you want to your cart. There is no code to enter for these offers.
- Check the discount shows in your total before you place the order.
Savings tips for userstack
- Start with the biggest saving first — the top userstack offer on this page is worth 30%. If checkout rejects it, work down the list; a smaller code that applies beats a bigger one that doesn't.
- These 15 deals apply automatically — there's no code to copy. Click through from this page so the discount is picked up, and confirm the total before paying.
- Check the order total before you pay, not after. Most userstack codes carry conditions — a minimum spend, selected products only, or new customers only — and checkout won't always say which one blocked it.

userstack API: User-Agent Detection for Developers
userstack is a lightweight User-Agent lookup API for real-time device, browser, and OS detection via JSON and XML. The service serves thousands of active users, from individual developers to enterprises like Apple and Intuit.
Quick Take on userstack
userstack is a cloud-based User-Agent detection API that helps developers and businesses identify and analyze user device information in real time. Instead of building device detection from scratch, developers integrate userstack's API to get instant insights into what device, browser, and operating system each user is accessing from. The service has been operating since 2014, when it launched as UserAgent API before rebranding to userstack. It's maintained by apilayer, a company that also operates several other popular developer APIs and SaaS tools. The appeal is straightforward: if your application or website needs to know what device or browser a visitor is using—whether to optimize the user experience, block certain traffic, or gather analytics—userstack handles the heavy lifting through a simple API call. The response comes back as JSON or XML, making integration straightforward for most tech stacks.
What userstack Offers
userstack's core offering is a User-Agent lookup API that processes HTTP user-agent strings and returns structured data about the device, browser, and operating system behind each request. The API supports both JSON and XML response formats, giving developers flexibility in how they consume the data. Real-time detection is the main feature—you send a user-agent string and receive instant classification of the device type (mobile, desktop, tablet), browser name and version, operating system details, and other device attributes. The API is described as lightweight, meaning it's designed to be fast and efficient without unnecessary overhead. Beyond the technical API itself, userstack provides API documentation to help developers get started, and their website indicates they offer multiple pricing tiers—suggesting both free and paid plans exist. The service is built to scale from individual freelance developers running side projects all the way up to large enterprise deployments, since their customer base includes solo developers, small-to-medium businesses, and Fortune 500 companies.
Who Uses userstack
userstack attracts a broad spectrum of users across the development and business world. Freelance developers use it for personal projects that need device detection without the cost or complexity of building it themselves. Small and medium-sized businesses (SMBs) integrate it to optimize their web and mobile applications for different devices, improve user experience, or gather device analytics. At the enterprise level, userstack counts major clients including Apple, Accenture, and Intuit—companies that need reliable, scalable device detection across millions of user interactions. The API is particularly useful for developers working on web applications, mobile backends, analytics platforms, or any service where understanding the user's device matters. It's also relevant for security teams that need to detect suspicious user-agent patterns, for marketing teams analyzing traffic by device type, and for product teams optimizing experiences across the growing fragmentation of devices and browsers in the market. Whether you're running a startup, a mid-market SaaS tool, or supporting millions of users at an enterprise, userstack positions itself as a general-purpose solution for this detection problem.
userstack Pricing Structure
userstack offers multiple pricing tiers to serve different scales of usage. The company emphasizes that both free and paid plans are available, though specific pricing amounts are not detailed on their marketing materials. What is clear from their offers is that they use a tiered approach: there's a Pro Plan, Business Plans, and Team Plans, each with its own price point. For annual commitments, userstack rewards longer-term contracts with discounts compared to monthly billing. The service also appears to differentiate pricing based on request volume or feature set, as different tier names suggest different capabilities. They explicitly mention renewal pricing, indicating that your initial discount may differ from what you pay when renewing, which is common in API pricing. Students qualify for their own discount tier, suggesting userstack is actively trying to build developer mindshare among the next generation. The flexibility across multiple plan tiers means you're not locked into a one-size-fits-all model—whether you're handling thousands of requests monthly or millions, there's likely a tier designed for your volume.
How to Use userstack Discounts
userstack runs several promotional offers throughout the year, with discounts typically ranging from 15% to 30% off various plans and billing terms. New users can expect welcome discounts in the 20–30% range depending on the current promotion. If you commit to annual billing rather than paying month-to-month, you'll see savings built into that choice. Existing customers have renewal discounts available to encourage contract renewal. Students can verify their status to access a dedicated 20% student discount. The offers shift periodically—sometimes they promote specific plan tiers like Pro or Business Plans, sometimes they offer broad discounts across any subscription, and sometimes they reward longer billing cycles. If you're deciding whether to wait for a discount code versus signing up now, consider that these offers appear frequently enough that waiting a few days or weeks often surfaces a new promotion. However, if you find a discount code that matches your plan tier and billing preference, applying it immediately locks in that saving. The best approach is to check for current codes at the time you're ready to sign up, since the rotating nature of these offers means today's discount may not be available next month.
Pros & cons
👍 Pros
- Serves major enterprises like Apple, Accenture, and Intuit reliably
- Lightweight API design keeps integration fast and efficient
- Multiple pricing tiers and billing options for different budgets
👎 Cons
- Pricing details not transparent on public website
- Free tier capabilities not clearly specified upfront






