# Compound Interest Simulator vs Coast FIRE Calculator

The clearest difference is price: Compound Interest Simulator at Free against Coast FIRE Calculator's $4.99. Compound Interest Simulator also leads on rating (4.9 vs 1.0) and ratings volume (424 vs 1). Coast FIRE Calculator's advantage is ads (none vs shown) and update cadence (every 2 days vs every 5 weeks). On in-app purchases, device support and iOS requirement there is nothing between them.

Compound Interest Simulator is free to download; Coast FIRE Calculator costs $4.99 up front. Compound Interest Simulator sells 10 one-off in-app purchases and Coast FIRE Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Compound Interest Simulator holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Compound Interest Simulator has 424 ratings behind it against 1, so its average is the more settled of the two.

Compound Interest Simulator ships an update every 5 weeks, Coast FIRE Calculator every 2 days. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Compound Interest Simulator | Coast FIRE Calculator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.9 (424 ratings)](https://appshunter.io/ios/app/compound-interest-simulator/id1544655173/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/coast-fire-calculator/id6754495451/reviews) |
| Number of ratings | **424** | 1 |
| Positive reviews | 81.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 47 MB | 30 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Andre Leite Barbosa Costa](https://appshunter.io/developer/984337133) | [Ataraxia Labs](https://appshunter.io/developer/1823083991) |

## What reviewers say

### Compound Interest Simulator

[App page](https://appshunter.io/ios/app/compound-interest-simulator/id1544655173)

Visualize the growth of your savings and investments using compound interest. Plan for major purchases, retirement, or financial independence with detailed simulations and customizable options.

**Highlights:** Compound interest simulation, Savings growth visualization, Basic and Advanced modes, Multiple deposit/withdrawal planning, Customizable compounding frequency, Retirement and financial independence planning

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlock All Themes | $0.99 | one-time |
| Remove Ads & Unlock All Themes | $1.99 | one-time |
| Remove Ads & Unlock All Themes | $2.99 | one-time |
| Remove Ads & Unlock All Themes | $3.99 | one-time |
| Remove Ads & Unlock All Themes | $4.99 | one-time |
| Remove Ads & Unlock All Themes | $5.99 | one-time |
| Remove Ads & Unlock All Themes | $6.99 | one-time |
| Remove Ads & Unlock All Themes | $7.99 | one-time |
| Remove Ads & Unlock All Themes | $8.99 | one-time |
| Remove Ads & Unlock All Themes | $9.99 | one-time |


### Coast FIRE Calculator

[App page](https://appshunter.io/ios/app/coast-fire-calculator/id6754495451)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Usage | $8.99 | one-time |


## Frequently asked questions

### Is Compound Interest Simulator free?

Compound Interest Simulator is free to download, with in-app purchases available.

### Is Coast FIRE Calculator free?

Coast FIRE Calculator costs $4.99, and also offers in-app purchases.

### Which has better reviews, Compound Interest Simulator or Coast FIRE Calculator?

Compound Interest Simulator is rated higher. Compound Interest Simulator averages 4.9 out of 5 from 424 ratings, while Coast FIRE Calculator averages 1.0 from 1 ratings.

### Do Compound Interest Simulator or Coast FIRE Calculator have ads?

Compound Interest Simulator shows ads; Coast FIRE Calculator does not.

### Which is updated more often, Compound Interest Simulator or Coast FIRE Calculator?

Compound Interest Simulator ships an update every 5 weeks, and Coast FIRE Calculator every 2 days. Most recently, Compound Interest Simulator was updated on October 29, 2026 and Coast FIRE Calculator on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*