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120 free browser-based developer utilities. No sign-up required.

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Trackers tell you what happened. Fi-Plan shows you what's possible. Simulate 50 years, month by month.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | devtoolstack.io | fi-plan.in |
| Pricing | ||
| Platforms | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of DeveloperToolStack yet.
Markdown allowed. Ye paste karo: Fi-Plan is a month-by-month financial simulator for Indian salaries — not another expense tracker. Most tools tell you what already happened. Fi-Plan shows you what's possible: it models your income, spending, EMIs, SIPs, salary jumps and taxes for up to 50 years...
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DeveloperToolStack and Fi-Plan.in.
Fi-Plan.in's answer:
Most tools tell you what already happened. Fi-Plan is a month-by-month financial simulator for Indian salaries — it projects income, taxes, EMIs, SIPs and net worth up to 50 years, so you can see when money gets tight and when financial independence arrives. The same engine powers a free API and MCP server, so AI assistants (Claude, ChatGPT, Cursor) run the exact same numbers.
Fi-Plan.in's answer:
India-specific by design: income-tax regimes, HRA and deductions, real EMI amortization with prepayments, step-up SIPs and rupee-first reporting — modelled month by month, not year-end estimates. It answers forward-looking questions ("prepay or invest?", "when can I retire?", "what if my salary jumps 20%?") from one consistent engine. Free to start, encrypted at rest, no broker passwords.
Fi-Plan.in's answer:
Indian salaried professionals (28–40, metro, roughly ₹12L–₹60L income) who plan seriously for FIRE/retirement, plus NRIs planning a return. Tech-comfortable users who like running real scenarios either in the app or through an AI assistant.
Fi-Plan.in's answer:
Next.js (App Router) and TypeScript, React on the front end, MongoDB for storage, and a pure TypeScript calculation engine shared by the web app, the public REST API and the MCP server. Deployed on Vercel, encrypted at rest, with OAuth and MCP for AI-assistant access.
Fi-Plan.in's answer:
Fi-Plan.in's answer:
Fi-Plan started from personal experience, not a market study. After my family's business nearly collapsed, I rebuilt my finances around a layered foundation - save first (10% emergency, 40% savings, 50% investment), funding each layer before the next, then invest. It worked, but tracking it lived in spreadsheets. So my co-founder Utkarsh Pandey and I turned that system into a product: a way to quantify exactly how much money you'll have at any point and simulate income, expenses, loans, inflation and returns month by month. That became Fi-Plan.
Share your experience with using DeveloperToolStack and Fi-Plan.in. For example, how are they different and which one is better?
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