# Compounder vs FFCalc

The clearest difference is in-app purchases: Compounder at none against FFCalc's 4. Compounder also leads on rating (4.8 vs 4.6) and review sentiment (61% vs 48%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FFCalc sells 4 in-app purchases, starting at $2.99 per 7 days. Compounder asks for nothing beyond the download.

Compounder holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Compounder has 4.3K ratings behind it against 408, so its average is the more settled of the two. Written reviews point the same way: 61% of Compounder's written reviews are positive against 48% of FFCalc's.

Compounder ships an update every 3 weeks, FFCalc monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Compounder | FFCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4.3K ratings)](https://appshunter.io/ios/app/compounder/id1412552240/reviews)** | [4.6 (408 ratings)](https://appshunter.io/ios/app/ffcalc-retirement-calculator/id1473492772/reviews) |
| Number of ratings | **4.3K** | 408 |
| Positive reviews | **61.4% of reviews** | 47.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 5 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [James Bevins](https://appshunter.io/developer/1137750302) | [Voglhuber](https://appshunter.io/developer/433453828) |

## What reviewers say

### Compounder

[App page](https://appshunter.io/ios/app/compounder/id1412552240)

Calculate the growth of savings and investments using compound interest. Explore how regular contributions and withdrawals impact your financial goals over time. Designed for anyone to understand and utilize the power of compounding for wealth building.

**Highlights:** Calculate compound interest, Flexible settings, Factor in periodic withdrawals, Factor in additional contributions, Easy-to-use interface

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Instant results
- 💡 Helps explain investments
- 🚀 Simple and easy to use
- 👍 Best and easiest compound calculator

**What reviewers complain about**

- 🐛 Glitchy and not user-friendly after update
- 🐛 Can't use quarterly, monthly, or weekly buttons after update
- 🐛 New version not working well on iPhone
- 🐛 Can't click off of monthly to quarterly, yearly, or weekly
- 🐛 Compound frequency stuck on monthly after update

**Reported bugs**

- Calculation issues with initial investment
- Formatting issues on mobile devices
- Crashes after short usage

**Requested features**

- Add percentage option for withdrawal
- Allow adjusting periodic contributions (weekly, monthly, etc.)
- Include daily compounding option
- Add inflation adjustment to contributions and outputs
- Create a widget version


### FFCalc

[App page](https://appshunter.io/ios/app/ffcalc-retirement-calculator/id1473492772)

This app helps you determine how long you need to save until financial independence. Input your income, expenses, and current savings to receive personalized retirement timelines. Visual charts and tables illustrate your projected savings growth year by year.

**Highlights:** Financial freedom timeline calculation, Income and spending input, Current savings tracking, Projected savings charts, Yearly savings tables, Interest, tax, and inflation considerations

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $2.99 | per 7 days |
| Monthly | $3.99 | per month |
| Yearly | $8.99 | per year |
| Lifetime | $29.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 👍 Great tool
- 👍 Awesome app
- 👍 Superb app
- 👍 Simple to understand

**What reviewers complain about**

- 💸 Ridiculous pricing
- 💸 Expensive subscription
- 📉 Inaccurate calculations
- 📉 Missing features
- 📉 Unclear calculations

**Reported bugs**

- Inaccurate monthly savings calculation
- Compound interest seems off
- Unclear inflation calculation frequency
- Unclear contribution timing
- Retirement expense calculation incorrect

**Requested features**

- Add monthly income support
- Add interest rate inputs
- More clarity on compounding
- Option to add income during retirement
- Add tax cost calculation


## Frequently asked questions

### Is Compounder free?

Compounder is free to download, with no in-app purchases.

### Is FFCalc free?

FFCalc is free to download, with in-app purchases available.

### Which has better reviews, Compounder or FFCalc?

Compounder is rated higher. Compounder averages 4.8 out of 5 from 4.3K ratings, while FFCalc averages 4.6 from 408 ratings.

### Do Compounder or FFCalc have ads?

Neither Compounder nor FFCalc shows ads.

### Which is updated more often, Compounder or FFCalc?

Compounder ships an update every 3 weeks, and FFCalc monthly. Most recently, Compounder was updated on November 2, 2026 and FFCalc on November 3, 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.*