In September 2025, the startup ecosystem showcased a diverse array of innovative companies that secured significant funding to advance their groundbreaking technologies and services. While artificial intelligence continues to dominate headlines and attract substantial venture capital, this month’s noteworthy deals highlight advancements in healthcare, sustainability, robotics, and mental health. Here’s an in-depth look at five standout startup funding stories that may have flown under the radar.
ViCentra, a Dutch startup, made waves in the medical device sector by raising $85 million in Series D funding for its innovative insulin patch pump, Kaleido. Designed to resemble a sleek tech gadget rather than a traditional medical device, Kaleido aims to empower individuals living with diabetes by offering a discreet and stylish alternative to conventional insulin delivery methods. The funding round was led by Innovation Industries, with participation from existing investors such as Partners in Equity and Invest-NL.
The global prevalence of diabetes is on the rise, and the insulin pump market is projected to exceed $14 billion by 2034. Within this market, patch pumps—small, tubeless devices that adhere directly to the skin—are the fastest-growing segment. ViCentra’s Kaleido stands out not only for its aesthetic appeal but also for its functionality. The waterproof device comes in various vibrant colors reminiscent of popular smartphone hues and integrates with a cloud platform that allows users to track their glucose levels, sleep patterns, and dietary habits. This data can be shared with healthcare providers or family members, enhancing the overall management of diabetes.
Tom Arnold, CEO of ViCentra, emphasized the company’s commitment to creating a product that resonates with users on both functional and emotional levels. “Kaleido is a true disruptor—small, discreet, featherlight, and beautifully designed,” he stated. With the new funding, ViCentra plans to meet the growing demand in Europe and accelerate its entry into the U.S. market, where the need for innovative diabetes management solutions is equally pressing.
In a different realm of innovation, Nitricity, a San Francisco-based startup, announced a $50 million Series B funding round to revolutionize fertilizer production. Traditional fertilizers, primarily produced through the Haber-Bosch process, are significant contributors to greenhouse gas emissions, accounting for over 2% of global emissions. Nitricity aims to address this environmental challenge by utilizing renewable energy and organic waste materials, such as recycled almond shells, to create its organic nitrogen fertilizer liquid, dubbed Ash Tea.
The company’s approach not only reduces the carbon footprint associated with fertilizer production but also enhances agricultural productivity. Field trials have demonstrated that Ash Tea can increase crop yields by up to 30%, making it a cost-competitive alternative to conventional fertilizers. Nitricity’s pilot factory in Fremont, California, currently produces 80 tons of fertilizer annually, treating approximately 80 acres of crops. With a robust sales pipeline of $150 million, the company is poised for significant growth as it prepares to launch a new factory that will increase production capacity by 100 times.
Nicolas Pinkowski, co-founder and CEO of Nitricity, expressed enthusiasm about the company’s expansion plans. “This is an inflection point for Nitricity. We’re scaling across the U.S. and are very excited to expand into Europe in a serious and assertive way,” he said. As European governments increasingly prioritize sustainable agriculture and circular economies, Nitricity is well-positioned to meet the rising demand for environmentally friendly fertilizers.
Meanwhile, ZeroBrush, a Palo Alto-based startup, secured $10.8 million in funding to launch what it claims is the world’s first full-mouth oral cleaning device. Traditional toothbrushes have seen little innovation since the introduction of electric models in the 1950s, but ZeroBrush aims to change that narrative. The fully automated device cleans all 192 tooth surfaces simultaneously using custom-fit, 3D-printed mouthpieces and sonic-powered bristles. Early testing indicates that ZeroBrush removes nearly twice as much plaque in half the time compared to manual brushing.
Founded by cosmetic dentist Dr. Nidhi Pai and product innovator Akash Pai, ZeroBrush is positioned to disrupt the oral hygiene market by offering a more efficient and effective cleaning solution. The startup’s investors include Social Capital and a large consumer packaged goods (CPG) strategic partner, along with angel investors and a senior executive from Meta. Dr. Pai highlighted the significance of ZeroBrush in transforming oral hygiene routines: “ZERObrush is not just an incremental improvement—it’s a completely new category of oral hygiene that brings professional-level cleaning to everyday routines.”
As the startup landscape evolves, mental health remains a critical area of focus. Seven Starling, a New York-based startup, raised $8 million to expand its maternal mental health platform, which addresses the challenges faced by women during fertility, pregnancy, postpartum, and early parenthood. Perinatal mood and anxiety disorders affect approximately one in five women, making them the most common complication of childbirth. Alarmingly, an estimated three-fourths of women diagnosed with these disorders do not receive adequate treatment due to stigma, provider shortages, and access issues.
With this new funding, Seven Starling aims to enhance its services and reach more women across the United States. The company has already established partnerships with over 1,500 OB-GYNs and operates in 18 states, with plans to expand to more than 30 states by the end of 2026. Rethink Impact led the funding round, with participation from several notable investors, including Pear VC, Zeal Capital Partners, and March of Dimes.
Tina Keshani, CEO and co-founder of Seven Starling, emphasized the importance of integrating mental health care within the healthcare system. “We saw an opportunity to build something different by working directly within the healthcare system rather than working around it,” she stated. By providing specialized care at critical moments, Seven Starling aims to improve outcomes for mothers and their families.
Lastly, MicroFactory, a San Francisco-based robotics startup, raised $1.5 million in pre-seed funding to develop a compact, non-humanoid tabletop robot designed for repetitive manual tasks such as electronics assembly and food packaging. Unlike many startups focused on humanoid robots, MicroFactory’s approach emphasizes practicality and affordability. Priced around $5,000, the company’s robots are small enough to fit on a desktop and feature interchangeable tools for various tasks, including precision soldering and light-duty food processing.
Co-founder and CEO Igor Kulakov highlighted the advantages of their design, stating, “You don’t need a humanoid robot to automate tabletop work. Our robot design allows us to automate tasks with the current state of robotic AI models and hardware.” With over 100 paid reservations from customers across multiple industries, MicroFactory is set to ship its first units in early 2026.
These five startups exemplify the innovative spirit driving the current entrepreneurial landscape. From healthcare solutions that empower individuals with chronic conditions to sustainable agricultural practices that mitigate environmental impact, these companies are making strides in their respective fields. As they secure funding and scale their operations, they contribute to a broader narrative of progress and transformation in the startup ecosystem.
While artificial intelligence continues to capture significant attention and investment, it is essential to recognize the diverse range of innovations emerging across various sectors. The advancements made by ViCentra, Nitricity, ZeroBrush, Seven Starling, and MicroFactory demonstrate that the future of technology is not solely defined by AI but is enriched by a multitude of creative solutions addressing real-world challenges.
As we move forward, it will be fascinating to observe how these startups evolve and influence their industries. Their success stories serve as a reminder that innovation knows no bounds and that the entrepreneurial spirit thrives in the pursuit of meaningful change. Whether through improved healthcare, sustainable practices, or enhanced daily experiences, these startups are paving the way for a brighter future.