Compound Interest Calc +
by Adam Fahlman
- Finance
- Paid
- Zombie
- Rating
- 4.8
- 35 ratings · US storefront
- Top 94%among 80 Finance apps
- Last update
- Mar 17, 2024
- Version 1.8
- Size
- 1 MB
- Category
- Finance
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Compound Interest Calc + is the best app for quickly calculating compound interest and the future value of investments.
Compound Interest Calc + features:
- support for starting principal, interest, duration, inflation and additional deposits
- support for additions to be made at the beginning or end of the period
- daily, weekly, bi-weekly, monthly, bi-monthly, quarterly, semi-annual and annual compound frequency and additions frequency options
- results that include final balance, inflation adjusted, total interest and total additions
- PDF and CSV (Excel or Numbers) export options
- saving of calculations for viewing later
- comparing the results of saved calculations
- a complete amortization schedule
- a beautifully designed interface
- available in English, French, and Spanish!
I love feedback! I want this app to work for you. Let me know if you’d like to see any additional features or if something is not quite working correctly. You can submit feedback right from within the app.
What’s new
Release notes for the latest version, as written by the developer.
Bug fixes
Rank history
Daily position in the Cayman Islands charts. #1 is at the top.
- Best rank
- #14
- Current rank
- #14
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
70/100
Not flagged as small & simple
- Developer size10% · 25
Developer: 5 apps on the charts
- Audience size100% · 20
Ratings: 35
- App size100% · 10
Size: 1 MB
- Price model100% · 15
Price model: paid
- Demand proof75% · 30
Best rank #14, 20 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 1.8LatestReleased Mar 17, 2024