Compounder vs Compoundly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compounder
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.
- Calculate compound interest
- Flexible settings
- Factor in periodic withdrawals
- Factor in additional contributions
- Easy-to-use interface
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Compounder lets you easily calculate the power of compound interest to reach your financial goals—whether for savings, investments, or retirement planning. What is compound interest? Compound interest is the interest calculated on both the initial principal and the accumulated interest from previous periods. This powerful tool can make a big difference over time! Example: Imagine starting with $1,000 in savings, contributing $500 monthly at an 11% annual return. After 40 years, that account could grow to $4.38 million! Even small, regular contributions—like the average American car payment—can build lasting wealth. Features: Quickly calculate compound interest with flexible settings. Factor in periodic withdrawals or additional contributions to see how they affect your growth. Easy-to-use interface, designed for anyone wanting to understand and harness compound interest, without needing a finance background. You don’t need to be a Wall Street broker to become a millionaire. Start planning your financial future with Compounder today!
Compoundly
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Compoundly is a compound interest calculator that stays out of your way. Two tools, both built around one idea: small amounts, left alone, become large ones. COMPOUNDING INTEREST See what an investment grows into. Set a starting amount, add to it monthly or yearly — or draw it down instead — and watch the curve. Compoundly shows you the total value, what you put in, and what the growth itself contributed. REVERSE COMPOUNDING Start from the goal instead. Tell Compoundly what you want and when, and it works backwards to whatever you're missing: • How much to add each month or year • What annual return you'd need to get there • Or, if you'd rather invest once, the single amount to put in today CHART AND TABLE Every projection comes with a growth chart that separates your contributions from the interest they earned, so you can see the moment compounding takes over. Drag across it to read any point. Switch to the table for a period-by-period breakdown, year by year or month by month, labelled with real calendar dates. BUILT TO BE HONEST • Contributions are made at the end of each period, and the app says so • Monthly plans compound monthly; annual rates compound annually • Withdrawals never overdraw — if the money runs out, Compoundly tells you the year • A 0% return is handled properly, not treated as an error QUIET BY DESIGN No account. No sign-in. No ads. No analytics, no tracking, no third-party code. Compoundly has no networking at all — it works entirely offline, and the numbers you type never leave your device. Compoundly is a calculator, not financial advice. Projections assume a constant rate of return; real returns vary year to year.
Screenshots
Verdict
Compounder and Compoundly are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Compounder | Compoundly |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4.3K ratings) — better | — |
| Positive reviews | 61.4% of reviews | — |
| Number of ratings | 4.3K — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | James Bevins | Two Green Leaves LLC |
Bugs and requests
Compounder
Reported bugs
3 issues- Calculation issues with initial investment
- Formatting issues on mobile devices
- Crashes after short usage
Requested features
5 requests- 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
Compoundly
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Compounder
No in-app purchases
Compoundly
No in-app purchases
Questions
Is Compounder free?
Is Compoundly free?
Do Compounder or Compoundly have ads?
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