Areeb Siddiqui’s fintech has served 1.3 million customers without raising a traditional venture round. The trick is that most of them have never heard of Kestrl. The London-based company, founded in 2019, sells white-label software to Islamic banks, embedding its budgeting, savings, and investment tools inside their own apps. Siddiqui, the CEO, calls it a “Muslim money” operating system. The reported $254,010 in total funding suggests a capital-efficient path, but the real test is whether the software can scale beyond a niche.
The Dual-Model Wedge
Kestrl runs two businesses in parallel. Its consumer app offers open-banking-powered budgeting, automated savings pots, and a Sharia-compliant investment marketplace, all wrapped with faith-specific features like Zakat calculation [sp-edge]. The second, and likely more scalable, line is its B2B software. Kestrl licenses a suite of tools,data enrichment, financial insights, auto-saving, Halal investment screening, and Zakat calculators,to financial institutions [sp-edge]. This allows banks to offer faith-aligned financial planning without building the tech themselves. The model creates a distribution flywheel: partner banks push the product to their customer bases, while Kestrl retains a direct brand touchpoint with its own app.
Why Islamic Finance Is a Fintech Tailwind
The global Islamic finance market is measured in trillions, but digital-first products for its adherents remain sparse. Conventional personal finance apps often lack the necessary filters to screen out interest-bearing instruments or non-compliant sectors. Kestrl’s entire product is built around these constraints as a first principle, not an afterthought [Cambridge Judge Business School, 2021]. The company is an Open Banking agent under UK FCA regulation and is pursuing ISO 27001 certification, credentials that matter to both retail users and institutional partners [sp-edge]. Its geographic footprint,reaching users in the UK, Malaysia, the UAE, and Pakistan through partners,points to a strategy targeting the global Muslim diaspora [24fintech].
The Team and Traction
Siddiqui and co-founder Daeng Termizi met at the University of Cambridge [sp-edge]. Siddiqui’s background spans strategy consulting and asset management, and he hosts the “Muslim Money Talk Podcast” [Cambridge Judge Business School, 2021] [Apple Podcasts, 2026]. The leadership team is rounded out by co-founder and CFO Ayaz Siddiqui and CTO Irfan Radzi [theorg.com, 2026]. Their most significant traction signal is a partnership with Bank Islam in Malaysia. Kestrl’s technology is being integrated into the bank’s “Be U” app, with an aim to acquire over 350,000 users within 12 months [kestrl.io, 2026] [fintechnews.my, 2026]. The 1.3 million customers served via partner banks since 2021 is a reach metric, not a revenue figure, but it underscores the use of the B2B2C model [24fintech].
The Capital and Competitive Question
Kestrl’s funding history is modest by fintech standards. Public records show a $20,000 seed round in 2022 and a total of roughly $254,000 raised across three rounds [TheCompanyCheck]. This could reflect capital efficiency, or it may signal a need for a larger round to fuel aggressive expansion and product development. The competitive landscape is diffuse. There are generic budgeting apps (Monzo, YNAB) that lack Sharia screening, and there are Islamic banks building their own digital offerings. Kestrl’s bet is that its specialized, packaged software is a faster route to market for both.
The Next Twelve Months
The company’s immediate future hinges on the Bank Islam rollout. Hitting the 350,000-user target would provide a powerful case study for similar institutions in the Gulf and Southeast Asia. The path likely requires more capital. A Series A round would be a logical next step to fund sales efforts and deepen product moats. The key metrics to watch will be enterprise contract values and user engagement within the white-label deployments, not just gross customer counts.
Kestrl’s early backers include Techstars and the Dubai International Financial Centre (DIFC) [TheCompanyCheck]. Their seed capital, however thin it reads on paper, bought a proof of concept now embedded in a million-plus financial lives. The question for Siddiqui and his team is whether a white-label Sharia engine can become the default software layer for the world’s Islamic banks, or if the niche remains just that.
Sources
- [sp-edge] Kestrl company profile | https://sp-edge.com/companies/1629339
- [Cambridge Judge Business School, 2021] Kestrl - the Islamic fintech putting ethics and faith at the forefront of personal finance innovation | https://www.jbs.cam.ac.uk/2021/kestrl-the-islamic-fintech-putting-ethics-and-faith-at-the-forefront-of-personal-finance-innovation-in-the-uk/
- [24fintech] Kestrl company profile | https://24fintech.com/kestrl
- [kestrl.io, 2026] Kestrl website | https://kestrl.io
- [fintechnews.my, 2026] Kestrl partners with Bank Islam | https://fintechnews.my
- [TheCompanyCheck] Kestrl funding details | https://www.thecompanycheck.com/company/b/kestrl/s2j78x2t3ds2pamyu
- [Apple Podcasts, 2026] Areeb Siddiqui on Side by Side podcast | https://podcasts.apple.com/lu/podcast/areeb-siddiqui-hitting-rock-bottom-fatherhood-the/id1721379053?i=1000727464246
- [theorg.com, 2026] Kestrl leadership profile | https://theorg.com