Natural language first
Instead of presenting a dense form, OneLine starts with the answer people are trying to understand.
For educators, financial wellbeing teams and partners.
Financial calculators people can actually understand.
OneLine turns common money questions into plain-English answers. It is designed for learners, employees, students and everyday consumers who need clarity before detail.
If I repay £300 a month, I will be debt-free in 3 years.
Mobile-first by design
The interface is compact, shareable and suited to quick learning moments on a phone.
Educational, not advisory
Results are estimates for learning and comparison, with clear assumptions and no regulated advice.
Useful for financial education programmes
OneLine can support online courses, student money guidance, employee financial wellbeing, bank education hubs and creator-led finance explainers.
Current calculators
- Investment growth
- Savings and cash scenarios
- Debt repayment and 0% transfers
- Student loans
- Savings goals
Credit card lesson
Show how monthly payment, APR and balance affect time to clear and interest paid.
Student loan explainer
Help learners see how income thresholds and interest can change repayments.
Savings goal challenge
Turn a target amount and time period into a monthly saving figure.
Licensing and embedding options
OneLine can be offered as a hosted calculator, an embedded widget, or a customised version for a partner audience.
Hosted tools
Link directly to tailored calculator scenarios from lessons, articles, guides or campaigns.
Embedded widget
Add selected OneLine calculators inside a partner site with optional tabs, colours and placement settings.
Custom version
Adapt language, branding, tabs and assumptions for a specific education programme or audience.
Compliance tone
OneLine is designed as an educational estimation tool. It does not recommend products, provide regulated financial advice, or tell users what they should do. Partner versions can include additional disclaimers, review copy and approved assumptions.
Start a conversation
For licensing, embedding, education partnerships or pilot ideas, email contactopprimo@gmail.com.