RLM vs U.S. Debt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RLM
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The RLM-14BX application is a financial and business calculator. It is based in the Hewlett-Packard HP-14B calculator, but specially designed to bring up the most of your iOS devices and , at the same time, conserving the easy of use and all the functions originally provided by the real calculator and nine menus added to expand it to professional level. Get it for free during 30 days (after you have to buy an In-App-Purchase lifetime payment). The RLM-14BX has a extensive Menu System accessed from the Main Menu or directly from the keyboard: >Main Menu: •Bond Price & Yield: Calculates the Price, Yield and Effective Duration of a Bond. •Call / Put: Black-Scholes Options Valuation Model to Calculates the CALL, PUT and “Greeks” values. •Depreciation: Calculates depreciation with SL, SOYD, DB or MACRS methods and conventions. •Date / Time: Calculates days between dates with Actual, 360 or 365 days calendars and time intervals between different times. •Currencies: world currencies conversions with manual input or on-line current rates. •Units Convert: Customizable physical units conversions. •Solver: Calculates arbitrary equations entered as text expression to solve any of the variables knowing the others. •Probability: Combinations, permutations and Normal, Exponential, t-Student and Weibull probability distributions. •Utilities: -General Settings: Customize many aspects of the calculator including formats & feedbacks. -Storage Registers: Store and perform operations directly over the calculators storage registers. -Memory Content: Clear, Back-Up or Restore part or all of the Calculator's memory. -Help Documents: Description and examples of all the calculator worksheets and features. -Solver Equation: Algebraic expression for use in the "Solver" worksheet. -Units Database: Customize the "Units" worksheet. >Keyboard Menus: •AMORT: Loan Amortization Schedule for a single or several loan payments. •CFLO: Cash Flows calculation of the NPV, IRR, NFV, NUS, Payback Period, etc. for different cash flows occurring at regular time intervals. •STAT: Statistics calculation of the Mean, Median, Standard Deviation, Curve Fitting and forecasting, etc. for two variables data samples. •MATH: Trigonometric and logarithmic functions. •B.EVEN: Break-Even analysis using the relation: Profit = (Price - Var.Cost) • Units - Fix.Cost •ROI: Return on Investment analysis using the relation: ROI% = Revenue • %Profit / Investment •INVEN: Inventory turnover analysis using the relation: Inventory Turnover = 2 • Cost of Goods Sold / (Begin - End inventory) >Keyboard direct functions: •Interest Rates Conversion: NOM%-EFF%-P for Nominal and effective interest conversion. •Percents Change: OLD-NEW-%CHG for percent change calculations. •Percent Total: TOTAL-PART-%TOTAL for percent total calculations. •Business Margin: CST-PRC-MAR for business margin calculations. •Time Value of Money (TVM): N-I/YR-PV-PMT-FV for compound interest calculations. System requirements: iOS 15.0 or above. In-App-Purchase: One-Payment for life. License Agreement: http://www.apple.com/legal/itunes/appstore/dev/stdeula Disclaimer: THIS IS NOT A HEWLETT PACKARD CALCULATOR, AND IS NOT SPONSORED IN ANYWAY BY HEWLETT PACKARD OR ANY OF ITS SUBSIDIARIES.
U.S. Debt
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Track the U.S. national debt in real time with official Treasury Department data. See America’s debt grow second-by-second with the cleanest, most accurate debt tracker on the App Store. LIVE DEBT COUNTER • Real-time national debt ticker based on official U.S. Treasury data • Watch the debt increase second by second • See exactly how much debt accumulates while you watch HOME SCREEN WIDGET • Add the live national debt counter directly to your home screen • Stay updated without even opening the app KEY STATISTICS • Total national debt • Debt per citizen • Debt per taxpayer • Debt-to-GDP ratio • Annual federal deficit • Interest accruing in real time INTERACTIVE CHARTS • 10-year debt-to-GDP timeline • Federal spending by category • Domestic vs. foreign debt holders • Top foreign holders by country • Debt by presidential administration PUT IT IN PERSPECTIVE • Compare national debt to billionaire wealth • Track historical debt milestones • Trillion-dollar debt tracker • State-by-state debt breakdown OFFICIAL DATA SOURCE All data comes directly from the U.S. Treasury Fiscal Data API (fiscaldata.treasury.gov). When Treasury data is delayed on weekends or holidays, estimated figures are clearly labeled. CLEAN & SIMPLE • Beautiful dark mode interface • Share statistics with friends • No account required • No ads • Updated daily
Screenshots
Verdict
The clearest difference is in-app purchases: U.S. Debt at none against RLM's 1. RLM's advantage is update cadence (every 4 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.
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. RLM sells 1 one-off in-app purchase. U.S. Debt asks for nothing beyond the download.
RLM ships an update every 4 days, U.S. Debt every 4 months. The most recent releases landed on September 10, 2026 and September 12, 2026 respectively.
| Parameter | RLM | U.S. Debt |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | R.L.M. Software | RAM GANGISETTY |
In-app purchases
RLM
- Lifetime Purchase$9.99
U.S. Debt
No in-app purchases









