Maths learning app, built from scratch
The founder behind Thinkerly had a clear idea — an app for practising the maths heuristics at the heart of the Singapore primary curriculum — and no technical team to build it. We stepped in as fractional CPO/CTO: shaped the product, built it, shipped it, and kept iterating with real users.
- Services
- Fractional CTO/CPO · Custom App Build · AI Adoption
- Engagement
- Fractional CPO/CTO · 2025–2026
- Where it stands
- Working product, real users, ongoing iterations
Singapore primary maths runs on heuristics — model drawing, working backwards, guess-and-check. It's the part of the curriculum parents find hardest to help with, and the part where drilling an assessment book gives a child an answer key, not an explanation.
The founder behind Thinkerly saw the gap and had a clear product idea. What they didn't have: a technical co-founder, a dev team, or the appetite to bet a year of runway on hiring one before the idea was proven.
An idea isn't a spec
"An app for maths heuristics" still leaves every hard decision open — which heuristics, what a good attempt looks like, how feedback should read to a ten-year-old. That's product work, and it has to happen before the code.
Hiring is slow and expensive for an unproven idea
A full-time developer, let alone a team, is a big bet before a single user has touched the product. Most founders stall right here.
Agencies build to spec, not to learning
A fixed-scope agency build gets you version one of a guess. What an early product needs is someone accountable for the outcome who can change course as real users react.
Most app ideas don't die from bad code. They die in the gap between "I have an idea" and "someone I trust is building it."
This is what our fractional CPO/CTO work looks like: one accountable person taking the product from concept to shipped, at a founder's pace rather than an enterprise one.
Shape the product before writing code
Pin down who it's for, which heuristics matter first, and what feedback a child can actually act on. Ruthlessly scope a v1 that proves the idea.
Build lean, with AI leverage
An AI-augmented solo build — modern stack, weeks not months, no team to coordinate and no agency overhead.
Ship early, to real users
Get the working product into children's hands and watch what happens, instead of polishing in private.
Iterate like an owner
Ongoing cycles of feedback and improvement — the product decisions and the technical ones made by the same accountable person, alongside the founder.
What the founder got:
- A working app for Singapore-curriculum maths heuristics practice — built, shipped, and in use.
- AI-powered assessment that looks at how a child worked through a problem, not just the final answer.
- A product shaped for learning: focused question sets by heuristic, feedback written for kids, progress a parent can read.
- A build-measure-iterate loop that keeps improving the product with real usage — without the founder managing a single developer.
If you've been "thinking about building an app" for months, the missing piece usually isn't the idea — it's a technical partner who treats your product like their own.
That's the engagement here: fractional CPO/CTO. You bring the idea and the domain knowledge; we bring product judgment, senior engineering, and the accountability to ship. From napkin sketch to working product — and beyond it.
Sounds like your business?
Tell us what you're dealing with — a similar problem, a different one, or an idea of your own. It takes a minute, and it goes straight to Gordon.
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