Resources

Guides and product notes.

Guides, FAQs, case studies, and product notes from Jinhub Technologies.

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11 practical guides and product notes

Resource 01
Education

How to practise maths effectively: a guide for students and parents

Practical, research-backed habits that make maths practice stick: short sessions, retrieval, spacing, mixed problems, and a mistake log.

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Resource 02
Product notes

Designing EasyTough: practice, feedback and motivation in maths learning

The design decisions behind our mathematics practice platform: difficulty levels, immediate feedback, progress signals, and how we think about leaderboards.

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Resource 03
Engineering

Building education platforms for low-connectivity regions

Concrete techniques for learning products that stay usable on slow networks and budget phones: page budgets, offline-tolerant progress, and honest testing.

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Resource 04
Personal finance

Calculating your real investment returns: absolute return, CAGR and XIRR

A plain-language guide to the three return numbers you will meet most often, when each one is appropriate, and worked examples you can check yourself.

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Resource 05
Product notes

Designing a portfolio tracker people can trust

Why our Portfolio Management tool treats transactions as the source of truth, and how traceable summaries help people understand what changed.

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Resource 06
Personal finance

A 30-minute monthly money review for households

A simple, repeatable routine for checking spending, savings and investments once a month, without a complicated budget.

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Resource 07
Engineering

Fintech software design principles we follow

Practical engineering rules for software that handles money: correctness, idempotency, auditability, verified webhooks, and privacy by design.

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Resource 08
Engineering

Handling money in software: floats, paise and rounding

Why floating-point numbers break money calculations, how to store amounts safely, and how to split and round without losing a paisa.

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Resource 09
Guides

Preparing documents for printing: a practical checklist

How to avoid wasted prints and repeat trips: file formats, page size, margins, page ranges, double-sided settings and colour choices.

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Resource 10
Engineering

Privacy and security basics for small web products

A practical baseline for small teams: collect less, encrypt in transit, manage secrets, keep dependencies current, and plan for backups.

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Resource 11
Engineering

How we choose a tech stack for a project

A practical framework for choosing technology: start from constraints, prefer proven tools, and keep future changes cheap.

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