
ProjectionLab
Boldin
CoastFIRE Hub
Coast FIRE Calc
Empower.me
Coast FIRE Planner
Coastyear
Calculate your path to financial independence

We are excited about solving customer’s complex accounting, distribution, POS, Payroll and mobiles sales application problems.

Which is more popular?
Based on our record, Flex Software seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | firenum.com | flexsoftware.com.my |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 1 - 9 employees · 2019 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Free FIRE calculator suite for planning early retirement. Calculate your FIRE number, Coast FIRE, Lean/Fat/Barista FIRE, project retirement dates, and track net worth with the Progress Tracker. Project your journey twoards FIRe on a dashboard. Model market crash scenarios and other events....
Flex Software is an accounting software company that is developing a software solution for Insurance Agents. Our product is called SAMS (Smart Agent Management System). The software will be cloud based online Customer Relationship Management for Life and General Insurance Agents. The platform...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Firenum and Flex Software.
Firenum's answer
Firenum started as a single FIRE number calculator ("fire + num = your number") and grew into a full planner. The aim was to make FIRE planning free and private, and to say honestly when a fee-only advisor is worth paying for.
Firenum's answer
Firenum plans your finances month by month and runs entirely in your browser, with no account and no signup. Your plan is stored on your own device, not on our servers. You get Monte Carlo simulation, historical backtesting against every period since 1871, and six stress scenarios (market crash, lower returns, job loss, expense spike, high inflation, retiring earlier or later), all for free. It supports 9 currencies with local number formatting, including lakh/crore for rupees and 万/億 for yen.
Firenum's answer
Paid planners like ProjectionLab and Boldin keep features such as saving your plan or advanced drawdown modelling behind a subscription. Firenum includes all of it free, with no account. Choose it if you want serious FIRE planning without handing your financial details to a company, or if you plan in a currency other than USD. If you need detailed US tax modelling or Roth conversion planning, a paid tool may still suit you better.
Firenum's answer
People working towards financial independence and early retirement (FIRE), from those who've just learned the 4% rule to those checking a drawdown plan before quitting. Many users are outside the US and want a planner that isn't built around US assumptions.
Firenum's answer
Astro, Preact with Preact Signals, TypeScript, Chart.js, Web Workers (simulations run off the main thread), Cloudflare Workers for hosting, and Playwright for end-to-end tests. The backtesting uses Robert Shiller's historical S&P 500 data.
Firenum's answer
Individual FIRE planners worldwide (no accounts, no data collected)
Share your experience with using Firenum and Flex Software. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Firenum since Feb 2026.
Flex Software is the Best Accounting Software Companies in Malaysia that provides specialised IT services, for individual companies with specialised Hardware or Software product requirements while making every effort to provide the best... Source: over 3 years ago
Flexsoftware is a comprehensive and reliable accounting software based in Malaysia. It provides a range of features to help businesses track their financials more efficiently. Users benefit from intuitive controls and the ability to... Source: almost 4 years ago
Flex Software is the best online Accounting Software in Malaysia for Small, Mid-size and Large Businesses at Best Prices. It is easy and user-friendly accounting software to manage your business. Customers have different needs and Flex... Source: almost 4 years ago
When comparing Firenum and Flex Software, you can also consider the following products.

The best retirement planning tool, FIRE calculator, and financial planning software built by, and for, the financial independence community.
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The #1 retirement planning tool online. Go beyond savings and investments with the best and most comprehensive financial planning software.
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Short Description | Free FIRE calculator toolkit — Coast, Barista, Fat, and Lean FIRE numbers in seconds.
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Free Coast FIRE Calculator to estimate your retirement savings, investment growth, and Coast FIRE age. Get instant, accurate results online.
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Take control of your money, budget, debt & savings
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Free Coast FIRE calculator: find the month you can stop saving for retirement, your Coast FIRE number, your odds of success and what-if scenarios.
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