Comparison

RetireWhen vs Coast FIRE Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RetireWhen

This app helps you plan your retirement by allowing you to adjust various financial factors and instantly visualize their impact on your future savings and depletion age through dynamic charts and interactive sliders.

Highlights
  • Dynamic real-time charts
  • Support for 3 user profiles
  • Adjust income, savings, and spending
  • Visualize depletion age and savings breakdown
  • Interactive sliders for real-time adjustments
  • Year-by-year results view
  • Advanced variable adjustments
Features
Read full description

RetireWhen: Plan Your Future, Instantly Take control of your retirement journey with RetireWhen – the intuitive, all-in-one retirement calculator that lets you see your future take shape as you adjust your plans. Features: • Dynamic charts that update instantly as you adjust values • Support for 3 profiles: Partner 1, Partner 2, and the two Combined • Set your income, savings, retirement age, spending, and more • Visualize depletion age and savings breakdown with clear graphs • Interactive sliders to tweak retirement age and spending in real-time • View detailed, year-by-year results in the Results tab • Adjust advanced variables like growth and inflation rates • iPad and iPhone optimized – works great in both portrait and landscape • All features included – no subscriptions or in-app purchases • Save results to Files or share via text, email, etc. • Your personal info stays on your phone. None of it is shared or sold to third parties Plan smarter. Know When you can Retire. Download RetireWhen today and take the guesswork out of your future.

About

Coast FIRE Calculator

This app helps you calculate the investment amount needed to achieve financial independence by retirement. It models your portfolio growth based on various financial assumptions, allowing you to plan for a secure future.

Highlights
  • Calculate Coast FIRE number
  • Project year-by-year growth
  • Compare different scenarios
  • Track progress towards goals
  • Save and manage multiple calculations
  • Flexible retirement age and income planning
Features
Read full description

Ever wondered how much you need to invest today so your retirement nest egg grows on its own? The Coast FIRE Calculator helps you answer that question. “Coast FIRE” is a strategy within the FIRE (Financial Independence, Retire Early) movement that involves saving and investing enough early in life that, without further contributions, your portfolio will grow to fund retirement. Once you reach your Coast FIRE number, you can shift to work that covers only your current expenses while compound interest does the heavy lifting. Key Features: * Easy inputs: Enter your current age, target retirement age, desired retirement income, inflation assumptions and your preferred safe withdrawal rate. * Automatic Coast FIRE calculation: Instantly see your Coast FIRE number and the age at which you’ll hit it, based on your assumptions. * Scenario comparison: View default and slower‑growth scenarios to understand how varying investment returns change your path. * Year‑by‑year projections: Get a detailed table showing annual growth and portfolio balances from now until retirement. * Progress tracking: See your current progress toward your Coast FIRE number, both in today’s dollars and at retirement. * Save & manage calculations: Save multiple scenarios (e.g. “Coast at 30,” “Coast at 38,” “Coast at 40”) and revisit them later to track your progress. * Flexible retirement planning: Explore different retirement ages and income targets. Understand how changes in inflation, investment growth and withdrawal rates affect your nest egg. Coasting to financial freedom doesn’t mean quitting work entirely; it means knowing your future is secure so you can enjoy life on your own terms. Download the Coast FIRE Calculator to demystify your retirement goals and see if you’re on track for financial independence.

Screenshots

RetireWhen4 screens
Coast FIRE Calculator4 screens

Verdict

The call

The clearest difference is price: RetireWhen at Free against Coast FIRE Calculator's $4.99. RetireWhen also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 1). Coast FIRE Calculator's advantage is ads (none vs shown) and update cadence (every 2 days vs every 4 weeks). On device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

RetireWhen is free to download; Coast FIRE Calculator costs $4.99 up front. Coast FIRE Calculator sells 1 one-off in-app purchase. RetireWhen asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RetireWhen holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: RetireWhen has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

RetireWhen ships an update every 4 weeks, Coast FIRE Calculator every 2 days. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.

Scorecard8 real differences · 2 level
RetireWhen versus Coast FIRE Calculator: the parameters behind the verdict, then further details
ParameterRetireWhenCoast FIRE Calculator
PriceFree — better$4.99
Rating5.0 (8 ratings) — better1.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings8 — better1
Update frequencyEvery 4 weeksEvery 2 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.1 — better
Further details — not scored
Size5 MB30 MB
Age rating12+17+
DeveloperOrestes MelgarejoAtaraxia Labs

In-app purchases

None

RetireWhen

No in-app purchases

1 purchases

Coast FIRE Calculator

One-time1
  • Ad-Free Usage$8.99

Questions

Is RetireWhen free?
RetireWhen is free to download, with no in-app purchases.
Is Coast FIRE Calculator free?
Coast FIRE Calculator costs $4.99, and also offers in-app purchases.
Which has better reviews, RetireWhen or Coast FIRE Calculator?
RetireWhen is rated higher. RetireWhen averages 5.0 out of 5 from 8 ratings, while Coast FIRE Calculator averages 1.0 from 1 ratings.
Do RetireWhen or Coast FIRE Calculator have ads?
RetireWhen shows ads; Coast FIRE Calculator does not.
Which is updated more often, RetireWhen or Coast FIRE Calculator?
RetireWhen ships an update every 4 weeks, and Coast FIRE Calculator every 2 days. Most recently, RetireWhen was updated on October 12, 2026 and Coast FIRE Calculator on October 28, 2026.

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