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Leanware
VerifiedVerified by the DesignRush team for authenticity and credibility.Boutique Software Development Company
Boutique Software Development Company serving operators and startups that need strategy and execution under one roof...
Top Services:
- Software Development
- Mobile App Development
- AI Development
- Software Testing
- Staff Augmentation
- Show more
- Location
- Bogota, Colombia
- Number of Employees
- Under 49
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 7 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsLeanware Services
Data sourced from the agency's DesignRush profile2Moon Capital BackupTyping Blueback Global
Leanware Reviews & Testimonials

AI Development Review from Julia Antoci
Leanware built the mobile MVP of our AI fitness assistant for iOS and Android. It started with discovery workshops that sharpened the product vision and shaped an MVP roadmap prioritizing launch features while leaving room for expansions like avatars and real-time feedback. They developed a conversational AI engine with custom prompt and context engineering tailored to fitness conversations, one that keeps continuity across sessions, remembers user progress and preferences, and keeps health guidance within safety standards. On top of that they implemented photo-based food recognition, smart search that understands fitness intent, personalized recommendations, progress tracking with AI-generated insights and coaching suggestions, and gamified response formats that make AI answers easy to read, plus the scalable backend behind it all. Their consultation saved us an estimated 20 to 30 percent in costs by avoiding unnecessary complexity, and we launched a functional MVP across the app stores in under eight weeks, faster than planned. Project management was exceptional: clear timelines, on-schedule delivery, and proactive communication via Slack, with expert recommendations guiding decisions rather than every choice being pushed back to us. Their technical skill and creativity made the whole thing feel less like hiring a vendor and more like building with a co-founder.

Software Development Review from Anonymous
Leanware delivered two significant projects for our e-commerce platform along with a steady stream of smaller fixes and enhancements. They built a new employee management page in our back office so our customers can create accounts, set permissions, and link employees to entities on their own, and when our mobile app's chat functionality needed replicating in the back office, they built a custom chat and messaging React library from scratch, integrated seamlessly with our design system and existing bespoke solution. Along the way they worked comfortably across Next.js, React, React Native, Apollo, GraphQL, and Hasura, and adapted to our implicit conventions. We ran week-long SCRUM sprints with check-ins three times a week, and they consistently hit the sprint goals on time; even when we needed hard pivots mid-sprint, they adapted without losing pace. As the engagement progressed they increasingly took the lead, asking well-informed questions and offering suggestions on code, product, and design that genuinely enriched the outcomes. What impressed us most was how swiftly they onboarded: given incomplete product descriptions, they asked the right questions to fill the gaps and picked up our undocumented code patterns without getting stuck on minor details. It felt like one cohesive team working toward shared objectives, free of the friction that usually comes with a third party

Mobile App Development Review from Anonymous
Leanware has partnered with us since Q4 2023 on two cloud-based mobile apps for iOS and Android, one built in Flutter and one in React Native, handling development on both and the UI/UX design on one. For one project they staffed a team of five mid-level developers, a senior developer, an architect, and a UX designer available as needed. They also took over an app that was unstable and nowhere near production-ready and turned it into a stable, solid product I'm genuinely proud to show. Their processes leave nothing to chance and the code that comes out of them is excellent; they've been flexible and thorough throughout. They meet deadlines, keep their promises, and are careful about what they commit to. The whole team has been great, and Alvaro, their Technical Product Manager, deserves a special mention for being remarkable. I hired them because they were upfront about what they could and couldn't do, and that honesty, together with the tremendous quality of their work, is what separates them from other providers. Both are getting harder to find these days.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsZoho consulting, development and integration services for operationally complex organizations.
CodeStringers helps growth-stage and small-to-mid-market companies implement, integrate, and operate Zoho-centered digital enablement solutions by combining senior executive consulting, cost-effective delivery teams, and custom software capabilities when needed...
Top Services:
- Software Development
- AI Development
- Web Development
- CRM Consulting
- ERP Consulting
- Show more
- Location
- Santa Cruz, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $50,000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCodeStringers Services
Data sourced from the agency's DesignRush profileTübr Storage Addiction Rep True Pet Kitchens MasterControl Tonal MindTRAK Golf Mido Play Inboard Technology SiteOne Services KnowledgeDesk
CodeStringers Reviews & Testimonials

Software Development Review from Lori Feld Oakley
Our Services organization is scaling quickly and we urgently needed a custom software application to automate our workflows, without breaking our annual budget. CodeStringers was the perfect fit, supporting us from ideation through go-live and everything in between. They innovated, hit their deadlines and released an amazingly high quality application that decreases our internal costs and improves our reputation with our customers. It would not have happened without CodeStringers.

Enterprise Review from Christian Schraga
CodeStringers is the perfect outsourcer to call If you have a solid software business idea but don’t know exactly how to bring it to life. They have both a top-notch development team as well as an executive staff with expertise in marketing, finance, and general business acumen. So they can not only build a product for you but they can make sure that the product you want to build is likely to succeed in the marketplace.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsGlobal boutique consultancy in Digital Strategy and AI
Kocoro is a boutique AI consultancy and digital growth studio. We integrate AI into real business processes — governed and measured — and build B2B growth systems that compound: SEO, GEO, web and thought leadership. Special focus on financial services and M&A firms...
Top Services:
- Web Development
- Digital Strategy
- Public Relations
- Web Design
- SEO
- Show more
- Location
- San Cristóbal de La Laguna, Spain
- Number of Employees
- Under 49
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKocoro Services
Data sourced from the agency's DesignRush profilePaseo Studio Decimal Studio Pentagram NY
An independent creative agency in Washington DC
This January is an indie creative agency building brands that have to earn attention instead of buying it. Our design, creative, production and media buying teams sit side by side. Clients include Lufthansa Group, GRVTY, the International Spy Museum and ZURU...
Top Services:
- Advertising
- Creative Services
- Branding
- Web Design
- Social Media Marketing
- Show more
- Location
- Washington DC, Washington DC
- Number of Employees
- Under 49
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThis January Services
Data sourced from the agency's DesignRush profileLufthansa Group The Spy Museum Profound AI Relay Financial Swiss Airlines
This January Reviews & Testimonials
Patrick White's Review Sourced from Google
They just handled our branding for a gonzo popcorn brand and they were amazing at meeting us at our weird nexus of polished aesthetic, gross out humor and weirdo messaging. They are as cool as they are funny.
Kevin Schwartz's Review Sourced from Google
This January starts where most other agencies finish! Their combination of highly innovative thinking and individual attention to each client makes them the go to agency in DC and beyond! The best!
Rob Shore's Review Sourced from Google
Probably the top ad agency in DC and rival the bigger established brands out of NY.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTransform AI Experiments Into Workflows
&above is an AI product agency that helps scale-ups and enterprises turn AI experiments into a new way of working. With a problem-first, design-led approach, we design and build agentic products and AI operating systems that people actually use every day - not pilots that stall...
Top Services:
- AI Development
- Software Development
- Engineering
- UI/UX Design
- Mobile App Development
- Show more
- Location
- London, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $50,000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts&above (andabove) Services
Data sourced from the agency's DesignRush profileGoogle Google Cloud Revolut Sage Tesco Dunnhumby Upstix
&above (andabove) Reviews & Testimonials
Perry Steward's Review Sourced from Google
We partnered with &above on a joint client project, where they led design and development while we handled content strategy and SEO. The experience was smooth throughout. Their design work was sharp, their dev execution was clean, and they were easy to work with as a cross-functional partner. Would happily collaborate again and recommend them to any brand looking for a strong creative and technical team.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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Frequently Asked Questions About React.js Developers
What are the typical React.js development services?
React.js development companies provide end-to-end services that span the entire software development lifecycle, from strategy and design to development and launch. Core services include:Â
- React.js consulting: Guiding businesses on building and optimizing their React applications through component selection, architecture design, and roadmap development.Â
- Custom React.js development: Engineering applications tailored to a business's specific needs, goals, and existing IT infrastructure, and typically include web design and web development. Â
- UI/UX design: Delivering intuitive interfaces, clear user flows, and standardized design systems that align with a brand and its target users.Â
- API integration: Connecting the React frontend to back-end systems, third-party tools, and external data sources to support seamless functionality and user experiences.Â
- Platform migration: Rebuilding or migrating legacy frontends to React to improve maintainability, usability, and performance, often with minimal disruption.Â
- Maintenance and support: Providing post-launch monitoring, debugging, performance optimization, and technical support.Â
Many React.js developers also offer specialized expertise, including SaaS products, web application development, customer portals, eCommerce solutions, and minimum viable products (MVPs). Â
Some React.js development companies may also offer digital marketing services, such as content marketing, search engine optimization (SEO), and branding.Â
What is the difference between React and React Native?
The main difference is that React is used to build web user interfaces, while React Native is for developing mobile applications. Here are more details on their differences:Â
| Â | React | React Native |
| Primary platforms | Websites, web applications, and single-page applications | iOS and Android mobile apps |
| Tech base | JavaScript/TypeScript with React for web UI | JavaScript/TypeScript with React, rendered through native UI components |
| Best for | Businesses building browser-based products, customer portals, dashboards, eCommerce sites, and SEO-focused web experiences | Businesses building cross-platform mobile apps for both iOS and Android with shared logic and accelerated development time |
| Examples | Facebook, Instagram, Netflix web | Microsoft Teams and Shopify |
What are the typical React developer tools?
React.js developers typically choose their stack based on a client's product goals, technical requirements, and existing systems. For example, they may use Formik for complex forms and validation, Storybook for developing and testing components in isolation, and MUI for production-ready UI components and design systems.Â
Common React developer tools:Â
- Core front-end: React, JavaScript, TypeScript, HTML, CSSÂ
- State and data fetching: Redux, TanStack QueryÂ
- UI and styling: Tailwind CSS, MUI, StorybookÂ
- Testing: Jest, React Testing Library, CypressÂ
- Back-end options: Express, Laravel, Rails, ASP.NETÂ
- Databases and infrastructure: PostgreSQL, SQL Server, RedisÂ
Can React.js developers build AI-powered features into web applications?
Yes. A React.js developer can build AI-powered features into a web application by integrating model APIs, SDKs, and AI workflows into the product experience. Â
Depending on your goals, this may include providers such as Google Gemini or Anthropic Claude, along with React developer tools, like Vercel's AI SDK for building chat, search, recommendation, and automation experiences in React-based apps.Â
These companies can help you build features such as:Â
- Personalized content and recommendations based on user behaviorÂ
- Chatbots and virtual assistants for real-time customer supportÂ
- Smart search with autocomplete, semantic search, and related-result suggestionsÂ
- AI-assisted dashboards that generate summaries, reports, forecasts, and insights from business dataÂ
When should you hire a React.js development company instead of using an in-house team?
The right choice depends on your project goals, internal capacity, timeline, and need for control. You may want to hire a React.js development company if:Â
- You have a short-term or time-sensitive project, but your internal team is already at capacity.Â
- You do not have the specialized expertise required for the project, such as React architecture, performance optimization, migration, or AI feature integration.Â
- You need to accelerate delivery without hiring and onboarding a full internal team.Â
- You want access to a broader range of skills, such as design, front-end engineering, QA, and post-launch support, through a single external partner.Â
- You need temporary support to fill skill gaps or expand delivery capacity.Â
Use an in-house team when:Â
- The application is a core business product that requires long-term ownership and deep institutional knowledge.Â
- The project involves highly sensitive systems, proprietary logic, or strict security and compliance requirements.Â
- You need close day-to-day collaboration, faster internal feedback loops, and direct control over priorities.Â
- The product requires continuous iteration and alignment with multiple internal teams over time.Â






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