Fixed Income Bonds Simplified
by Steven Townsend
- Finance
- Paid
- Rating
- 0.0
- 0 ratings · Azerbaijan storefront
- Last update
- Oct 12, 2026
- Version 2026.10
- Size
- 18 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.
Understand what changes a bond’s price—and why.
Bonds: Simplified is a hands-on fixed-income workbench for finance students and practitioners learning, checking or explaining bond math. Change the assumptions, compare scenarios and connect the numbers to price, cash flows and rate risk.
EXPLORE PRICE AND RISK
Calculate fixed-rate bond prices and yields. Examine duration, convexity and rate sensitivity, then compare scenarios side by side.
LEARN THE MECHANICS
Build your vocabulary with the Bond Fundamentals track and glossary. Use interactive demonstrations to explore fixed-income concepts.
GO DEEPER
Analyze callable bonds and mortgage-backed securities. Explore call assumptions, prepayment speeds, projected cash flows and sensitivity results.
CONNECT THE CURVE TO THE CALCULATION
Explore Treasury curves, historical comparisons and rate trends, with observation dates shown.
KEEP YOUR WORK
Save comparison pairs and export summaries for further analysis or discussion.
For students developing fixed-income intuition and practitioners who want a portable way to explore and explain scenarios.
Calculations are estimates based on your inputs and model assumptions. They are for education and analysis and should not be relied upon for investment transactions.
What’s new
Release notes for the latest version, as written by the developer.
A little housekeeping: small bug fixes and performance improvements.
Requires iOS 26.2 or later.
Rank history
Daily position in the Uzbekistan charts. #1 is at the top.
- Best rank
- #1
- Current rank
- #1
- 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.
93/100
Not flagged as small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size– · 20
No data, weight redistributed
- App size100% · 10
Size: 18 MB
- Price model100% · 15
Price model: paid
- Demand proof80% · 30
Best rank #1, 3 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 2026.10LatestReleased Oct 12, 2026
- 2026.9Released Sep 14, 2026