This article does not constitute financial advice and is designed for information purposes only.
We’re halfway through September and this week’s crowdfunding roundup covers a lot of ground, from deeply technical to refreshingly simple. One has created plant-based biodegradable polymers in pellet form to replace fossil-derived plastics at industrial scale.
Another is a fintech app reimagining how rent payments work, while a third is an early-stage idea to help people to remember to take their medicine on time – simple, but such a necessity. These startups are all taking on very different challenges, but all inviting the crowd to back what comes next.
So, who are the startups crowdfunding this week? Here they are.
1. Chestnut Biopolymers

How much are they raising: N/A
Website: www.chestnut.bio
SEIS/EIS? EIS pending.
About: Chestnut Biopolymers develops plant-based, biodegradable biopolymers in pellet form as a direct replacement for fossil-derived plastics that dominate manufacturing today.
Plastics manufacturing runs on pellets and any alternative that wants to be successful needs to fit into that existing infrastructure. Chestnut’s biopolymers are a plant-based, biodegradable option that can be used with current equipment and processes. It’s a practical, industrial-scale answer to plastic pollution that meets the sector where it is right now – one that’s under immense regulatory and consumer pressure to move away from fossil-derived materials.
Where to invest: Crowdcube
More from Startups
- Top IoT Startups In Japan
- Founders Of The Week: Cameron Shaw And Moe Hanafy
- Top Fashion Startups In South Africa
- Startup Of The Week: Quibim
- Harvard University: Successful Alumni Who Founded Startups
- 12 Influencers Who Have Become Successful Startup Founders
- What SMEs Should Consider When Choosing CAD Software
- 6 Startups Crowdfunding w/c 07.09.2026
2. Rentd

How much are they raising: N/A
Website: www.rentd.co.uk
SEIS/EIS? N/A
About: Rentd is a fintech app reimagining rent payments, turning one of the biggest monthly outgoings most people have into something that actually pays them back.
Rent is usually the enormous, unavoidable sum that leaves the account every month and gives absolutely nothing back to the person paying it (a roof over their head, yes, but not much else). With Rentd, renters can earn points on their rent and everyday spending for redeemable rewards with actual value. It’s some clever financial thinking in a market that often ignores renters in favour of homeowners and credit-card holders.
Where to invest: Crowdcube
3. Foudys
![]()
How much are they raising: N/A
Website: www.foudys.com
SEIS/EIS? Yes, SEIS & EIS
About: Foudys is a dedicated women’s football retailer and kit provider built specifically for fans, players and clubs in a corner of the game that mainstream retail has often overlooked.
Women’s football is growing rapidly but there isn’t much retail infrastructure supporting it. Fans have often struggled to find shirts they want and clubs haven’t always had a natural home for their merchandise. Foudys is changing that from the ground up, operating both online and through a physical flagship store in Manchester.
Where to invest: Crowdcube
4. DoseSync

How much are they raising: £20,000
Website: N/A
SEIS/EIS? N/A
About: DoseSync is an early-stage idea to make medication routines easier for people who forget doses or don’t believe in traditional pill organisers.
Forgetting to take medication is actually one of the most common and consequential problems in healthcare, affecting everything from short-term recovery to long-term condition management. Plastic organisers still work fine for some, but for others they’re inconvenient or just easily ignored. DoseSync is setting out to build something better, focused on the people existing solutions don’t currently serve well.
Where to invest: Crowdfunder
5. EasyCompanion

How much are they raising: £5,000
Website: N/A
SEIS/EIS? N/A
About: EasyCompanion helps older adults to navigate online tasks safely and confidently, making the digital world far less stressful to move around in.
For most of these adults, the internet is something they would like to use more but it’s simultaneously an overwhelming environment with confusing interfaces, unfamiliar terminology and real safety concerns. EasyCompanion is built around that gap, offering a way to get things done online without the anxiety that so often comes with it.
Where to invest: Crowdfunder
