Zestbrains Private Limited

Zestbrains Pvt. Ltd. is based in Ahmedabad, Gujarat, India, and has delivered over 400 mobile apps and 300 websites since entering the industry. The company employs 35+ developers and works with clients across 40+ countries. They handle the full development lifecycle—discovery, design, development, testing, and launch—for iOS and Android applications, web platforms, and e-commerce solutions.

The firm's portfolio spans consumer apps (Replika, an AI chatbot; Moises, a music collaboration tool; Talkie, an AI character platform) and utilities (Nerd AI for math tutoring, Fitter for fitness tracking, Arbin for ride-hailing). They've also built party games, food delivery apps, and educational platforms. Notable clients include owners and founders from Norway, Canada, Nigeria, Malaysia, the USA, Ghana, India, and the Netherlands.

Services and capabilities

Zestbrains offers web development, mobile app development (iOS and Android), UI/UX design, web and graphics design, e-commerce platform development, and software testing. On the backend and infrastructure side, they work with AWS, Firebase, MongoDB, PostgreSQL, MySQL, and DynamoDB. Frontend work includes React.js, Vue.js, Angular, and TypeScript. For mobile, they use React Native, Flutter, Swift, and Kotlin.

According to testimonials, clients have praised their responsiveness across time zones, on-time and on-budget delivery, and ability to pivot based on user testing feedback. One solo founder noted daily communication and milestone-driven progress; another mentioned quick onboarding of React Native developers. A client working with them for over a year highlighted reliability and long-term partnership value.

Their stated methodology begins with understanding business goals and target audience, then moves through structured design and development phases before rigorous testing and launch support. They emphasize transparency and clear communication as core values.

Notable work

Replika, the AI chatbot trusted by millions, appears to be their most prominent work. They've also built Talkie, a multimodal AI character platform; Moises, an AI music app for collaboration; and consumer games like "Truth or Dare" and "Busted – Most Likely To." Educational apps include TeachCompanion (exam prep) and Nerd AI (math tutoring). Utility apps span delivery (Snoonu in Qatar), fitness (Fitter), and transportation (Arbin). One testimonial explicitly mentioned high-quality Flutter work; another highlighted a complete iOS-to-Android transition.

How they work

Zestbrains offers both fixed-price and time & material engagement models. They accommodate multiple time zones and maintain daily communication with clients. The structured workflow covers discovery and design, then development, testing, and launch/maintenance. Pricing ranges from under $10K to $150K+ depending on scope. Contact is available via WhatsApp (+91-7226062508), Skype (info.zestbrains), and email (hello@zestbrains.com). An HR line is also listed for hiring inquiries.

Team and credentials

The team of 35+ developers is based in Ahmedabad's central location with employee-friendly infrastructure. Zestbrains claims presence on Clutch, Fiverr, GoodFirms, and People per Hour. The site reports 16,000 global customers, 500,000 completed projects, and 460,000 expert workers (the last figure likely includes a broader network). No specific ISO, SOC 2, or other compliance certifications are mentioned in the source material.