Nucleus' assets under administration (AUA) grew by just under 7% in the year to 30 June, following a year of "substantial investment" in its platform business.
The Edinburgh-based adviser platform's AUA is up to £15.3bn from £14.3bn at the same time last year, while net revenue was up by around £1m over the same period to £22.1m.
Nucleus launched several new platform enhancements this year, including a software upgrade, a Junior ISA product, improved phased drawdown capability, a new client portal and a new stockbroking service.
The impact has been to see a 1.9% increase in the number of active advisers using the platform to 1,383 and a 5.5% increase in customer numbers, which reached 95,657 over the last year.
However, the impact of investment was to see earnings before interest, tax, depreciation and amortisation fall by 5.8%, while blended revenue yield was also down by 1.9% owing to "tiered fees on larger portfolios", the firm said.
Meanwhile Nucleus declared an interim dividend of £1.1m, equating to a payment of 1.5p per share, and a balance sheet showing £17m of cash holdings and no borrowings.
Founder and CEO of Nucleus David Ferguson said: "We anticipated that the change to our operating model in late 2018 would significantly accelerate our product development in future years and the first half of 2019 has borne this out.
"Substantial investment in the core platform has delivered improved efficiency, new functionality and new capabilities."
Ferguson added that the firm plans "to continue developing our proposition" in efforts to achieve "an even wider market appeal over time".
He explained: "Alongside the progress in our product roadmap we continue to grow assets, revenue, profits, customers and advisers, all against a challenging market backdrop and I am excited by what we can achieve.
"Financial performance is otherwise expected to develop as planned as we look beyond short-term headwinds and toward the future with confidence."