Six Functions of a $1
by MSYapps
- Finance
- Paid
- Zombie
- Rating
- 5.0
- 1 ratings
- Top 96%among 275 Finance apps
- Last update
- Nov 24, 2023
- Version 5.9
- 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.
Six Functions of a $1 is a suite of financial calculations commonly used in finance, economics, investment analysis, and valuation. These functions are especially useful to students learning about time value of money concepts.
Key input variables are amount, annual interest rate, and term or length of time.
The term and the frequency of compounding or discounting can be set to monthly, quarterly, or annual intervals.
Once a computation has been performed for a particular term, you can access a "periodic table" that displays the calculated results for all periods up to the term so you can see how the results will vary over time.
Changes made to the variables for each function are saved for subsequent use, thereby simplifying the task of making changes to some variables while retaining others. This helps with repetitive computations where you are examining the consequence of changing one variable at a time.
What’s new
Release notes for the latest version, as written by the developer.
- Compiled with Xcode 15
- Added two new Gain computations to Future Value and Future Value of Annuity functions
Rank history
Daily position in the US charts. #1 is at the top.
- Best rank
- #26
- Current rank
- #26
- Days charting
- 6 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
66/100
Not flagged as small & simple
- Developer size0% · 25
Developer: 10 apps on the charts
- Audience size100% · 20
Ratings: 1
- App size100% · 10
Size: 1 MB
- Price model100% · 15
Price model: paid
- Demand proof70% · 30
Best rank #6, 3 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksGap check · UK
Is this US chart app missing in UK?
Store not checked yet
This is a candidate, not a verdict. Charts show at most 100 apps, so not charting does not mean no demand. Check the UK store before you decide.
See all gapsVersion history
- 5.9LatestReleased Nov 24, 2023