What is a Dollar Worth? vs UpperMark eReader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
What is a Dollar Worth?
Calculate the historical value of money using inflation data. This tool leverages the Consumer Price Index (CPI) to show how purchasing power has changed from 1913 to the present day.
- Inflation calculator
- CPI data integration
- Historical value comparison
- 1913 to present data
- Purchasing power analysis
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Inflation calculator. This calculator uses the Consumer Price Index (CPI) to calculate inflation comparisons from 1913 to present. The CPI is a measure of the average change in prices over time in a market basket of goods and services. The Bureau of Labor Statistics releases CPI data monthly.
UpperMark eReader
Access study materials and lecture notes for CAIA exam preparation. This app provides comprehensive handbooks, formula sheets, and flashcards to help you learn and retain key concepts efficiently.
- CAIA exam study handbooks
- Course lecture notes
- FormulaSheet for key equations
- Flashcards for keywords and concepts
- Preparation for CAIA exams
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UpperMark™ e-Reader is for accessing the UpperMark e-Study Handbooks, course lecture notes, and associated documents for preparing for the CAIA exams. UpperMark™ Study Handbooks are the foundation of our Suite study packages. Adhering closely to the CAIA assigned readings, they provide comprehensive coverage of the CAIA material. Our Study Handbooks come with our FormulaSheet - a handy product containing CAIA Level I key equations. Use the Study Handbooks as part of a Suite for maximum effectiveness: learn from the Handbooks, then sharpen your knowledge using Practice and Mock Exams from our dynamic TestBank software. UpperMark™ Flashcards are a highly effective way to review and retain CAIA exam keywords and key concepts. A detailed, yet condensed product, our Flashcards enable you to use your valuable time most efficiently.
Screenshots
Verdict
The clearest difference is update cadence: UpperMark eReader at every 2 weeks against What is a Dollar Worth?'s every 10 months. UpperMark eReader also leads on review sentiment (100% vs 80%). What is a Dollar Worth?'s advantage is rating (4.4 vs 4.0) and ratings volume (45 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
What is a Dollar Worth? holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: What is a Dollar Worth? has 45 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 80% of What is a Dollar Worth?'s written reviews are positive against 100% of UpperMark eReader's, so the app with the better star average is not the one people write more warmly about.
What is a Dollar Worth? ships an update every 10 months, UpperMark eReader every 2 weeks. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.
| Parameter | What is a Dollar Worth? | UpperMark eReader |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (45 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 80.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 45 — better | 1 |
| Update frequency | Every 10 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 1 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Federal Reserve Bank of Minneapolis | UpperMark, Inc |
Customer experience
What is a Dollar Worth?
UpperMark eReader
In-app purchases
What is a Dollar Worth?
No in-app purchases
UpperMark eReader
No in-app purchases
Questions
Is What is a Dollar Worth? free?
Is UpperMark eReader free?
Which has better reviews, What is a Dollar Worth? or UpperMark eReader?
Do What is a Dollar Worth? or UpperMark eReader have ads?
Which is updated more often, What is a Dollar Worth? or UpperMark eReader?
Other comparisons
