{ CASE STUDY DETAILS }
The problem, the decisions we made, and what actually changed for the client after launch
PROJECT NAME:
Expense Tracker Mobile App
INDUSTRY:
Consumer Fintech
ENGAGEMENT:
Mobile app build + release
PLATFORMS:
iOS, Android
TOOLS USED:
React Native, TypeScript, Node.js, PostgreSQL, SQLite
LOCATION:
Dhaka, Bangladesh
Personal finance apps do not fail because they lack features; they fail because logging an expense takes long enough that people stop. The brief was to build the fastest entry path we could — one screen, sensible defaults, works with no signal — and let every other decision in the product defer to that number.
Every Second Of Friction Is A Missing Entry
The category is full of apps that ask for six fields per expense, and the result is always the same: people log diligently for a fortnight and then stop, because the record of what they spent is only useful if it is complete. The brief was not to build a richer finance app. It was to build one where adding a coffee takes less effort than remembering not to.
Key issues identified:
One Screen, Under Five Seconds
Entry is a single screen: amount on a large keypad, a category from recently-used tiles, and save. Date defaults to now, notes and receipts are optional and out of the way, and recurring bills post themselves. Everything writes to a local database first and syncs when there is signal, so the app is fully usable in a basement queue and never loses an entry to a failed request.
The insight side is deliberately narrow: spend by category this month against last, budget progress with a projection of where the month is heading at the current rate, and a plain list you can search. We shipped fewer charts than the client originally asked for, on the argument that a chart nobody reads is a chart that costs load time — and kept the entry path as the thing everything else defers to.
Retention Was A Design Constraint, Not A Marketing Problem
Everything in this build was measured against one number: seconds from launching the app to a saved expense. That constraint killed features that would have looked good in a store listing and kept the ones people actually use daily. Cross-platform delivery from one codebase mattered too — a two-codebase build would have spent its budget on parity instead of on the entry path.
What this project reinforced:
Time To Log
< 5s
Amount, category, save — on one screen with sensible defaults, which is the number the whole app was designed against.
Codebases
1
iOS and Android ship from a single React Native codebase, so feature work lands on both platforms in the same sprint.
Offline Entry
Always
Every expense writes locally first and syncs when signal returns, so an entry is never lost to a failed request.
Recurring Bills
Automatic
Rent, subscriptions and utilities post themselves on schedule instead of relying on the user to remember them.
We do not just finish projects — we stay on after launch. Here is what the teams we shipped for have to say.
We were selling groceries, pharmacy items and household goods out of systems that did not talk to each other. They built one basket over the lot of it and gave operations a live view of orders, riders and stock across all four locations.
Boshir Ahmed
Signature Bangla
They scoped it honestly, told us which features were not worth paying for yet, and shipped on the dates they gave us. The questions they asked before writing anything were the useful part.
Shafin Ahmed
Textalyz AI
Every update arrived when they said it would, and we could open the thing they had built at the end of each one. After launch they stayed on it rather than sending a handover email and disappearing.
Redwan
Rongobuy
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// A focused MVP usually ships in 8–12 weeks. Larger SaaS platforms and multi-tenant systems run 4–6 months, delivered in two-week increments so you see working software throughout rather than at the end.
