Calc-12E RPN Financial Downloads & RevenueCalc-12E RPN Financial · App Store
Calc-12E RPN Financial is #12 in Business Paid in Germany and charting in 11 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperStone Meadow Development LLC
CategoryBusiness
Price1.99 USD
Released
Rating★ 4.0 (20)
Version4.2.3
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)5k+ worldwide
Calc-12E RPN Financial update history & changes
Last change · 7 events since 22 Oct 2008Full timeline ↓📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 6 events in the last 12 months
- 📈Calc-12E RPN Financial entered the top 100Top Paid · Business · DE
- 📈Calc-12E RPN Financial charting in a new countryMexico
- 📈Calc-12E RPN Financial charting in a new countrySaudi Arabia
- 📈Calc-12E RPN Financial charting in a new country in 3 chartsCanada · China · Russia
- 🆕Calc-12E RPN Financial first spotted by AppInsider#87 in Top Paid · Business · Italy
- 🆕Calc-12E RPN Financial released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.0 ★
20 ratings
Measured
Best rank now
#12
Business PaidMeasured
Calc-12E RPN Financial on the App Store
App details
App ID
294438793
Publisher
Kim Hansen
On the store since
Oct 2008
18 years on the store
Minimum OS
iOS 8.0+
iPhone 4s and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
4
EN DE PT ES
Size
21 MB
Also listed in
Finance
Calc-12E RPN Financial downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Calc-12E RPN Financial's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Germany | BusinessPaid | #12 |
 Japan | BusinessPaid | #141 |
 Brazil | BusinessPaid | #43 |
 China | BusinessPaid | #169 |
 France | BusinessPaid | #79 |
 United Kingdom | BusinessPaid | #163 |
| Italy | BusinessPaid | #88 |
 Canada | BusinessPaid | #118 |
 Indonesia | BusinessPaid | #82 |
 Saudi Arabia | BusinessPaid | #112 |
 United Arab Emirates | BusinessPaid | #94 |
Apps near Calc-12E RPN Financial on the chart
Business Paid, around #12.
Ratings
App Store, worldwide.
Rating
4.0 ★
20 ratings
Measured
Ratings
20
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
3.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Business apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Calc-12E RPN Financial
From the 41 most recent App Store reviews in the US.
Mostly positive (76% of recent reviews give 4–5 stars). People like it for being useful, and its features and content. The main complaints are about recent updates, and crashes and bugs. Recent reviews are more negative than earlier ones.
What people like
- Useful: “They fixed the problem, now works great”
- Features & content: “Here are my favorite features:”
- Design: “Updated for iPhone 5 layout”
- Price & subscription: “Best financial calculator money can buy”
Common complaints
- Updates: “The latest update coverts it to a 12E?”
- Crashes & bugs: “Solving for Interest/ROR errors”
- Design: “Bring back the real layout!”
About Calc-12E RPN Financial
5 Stars. “I can't tell you how often I use it, probably about as much as the phone app!"
- CharlieW, President. Waterman & Company (Real Estate Investment and Development)
“This is the first 12C type calculator for the itouch that has actually made me put down my real 12C. One of the best features of this calculator is the register display where you can see what is in FV, I, PV, PMT, etc. That alone makes it worth the $14.95 price. Consider the many other features that it has over and above the real 12C and you have one sweet program here. Best of the 12C emulators out there - hands down! “
- tsinvest
It started in early 2008 with a belief that:
• there was one and only one insanely great financial calculator
• the iPhone is the perfect platform to bring that calculator back to life
• it's not good enough to just copy the old, you have to make it better
• a financial calculator is a professional tool, not a game
From this mindset came Calc-12E, the first 12C emulator on the App Store. It was expensive back then ($20-$25) and compared to a game it still is because, well, you usually get what you pay for. Specifically:
Foremost, if the math isn't right in the corner cases I can't trust the calculator. Calc-12E's algorithms were written for iOS by a (the?) key member of the original 12C development team who incorporated his solutions to the quirks in financial computation that historically tripped up lesser implementations. There are reasons the 12C was the absolute best, and Calc-12E draws directly on that heritage.
While the original did what it could, 1980s technology made many features difficult, impractical or impossible to use. Calc-12E pioneered the following innovations to address shortcomings:
• you can always see what's in the financial registers (and stack if you choose) so you have instant assurance that you've entered your data correctly. This feature has been copied by nearly every emulator on the App Store, for good reason.
• visual cash flow editing radically eases how you deal with cash flows... believe it or not it is actually easy to manipulate cash flows with Calc-12E. There's a demo on YouTube, search for Calc12E.
• Investment mode allows you to simultaneously evaluate metrics on up to three cash flow scenarios at a time. You can compare cash flows side-by-side AND because of visual cash flow editing you can play what-if games
• the results of some calculations need to "leave the phone" to be useful. Amortization schedules, leasing terms, bond yields... everything can be sent via email using customizable templates
Finally, a professional tool receives continuing support and updates. It does not nag you to rate it, it does not invite you to pay to get more. It does not crash. Check out Calc-12E's version history and reviews of previous versions. This is a live, supported app with tens of thousands of long term customers and I have never charged for an upgrade or cloaked features behind ads or payw
- CharlieW, President. Waterman & Company (Real Estate Investment and Development)
“This is the first 12C type calculator for the itouch that has actually made me put down my real 12C. One of the best features of this calculator is the register display where you can see what is in FV, I, PV, PMT, etc. That alone makes it worth the $14.95 price. Consider the many other features that it has over and above the real 12C and you have one sweet program here. Best of the 12C emulators out there - hands down! “
- tsinvest
It started in early 2008 with a belief that:
• there was one and only one insanely great financial calculator
• the iPhone is the perfect platform to bring that calculator back to life
• it's not good enough to just copy the old, you have to make it better
• a financial calculator is a professional tool, not a game
From this mindset came Calc-12E, the first 12C emulator on the App Store. It was expensive back then ($20-$25) and compared to a game it still is because, well, you usually get what you pay for. Specifically:
Foremost, if the math isn't right in the corner cases I can't trust the calculator. Calc-12E's algorithms were written for iOS by a (the?) key member of the original 12C development team who incorporated his solutions to the quirks in financial computation that historically tripped up lesser implementations. There are reasons the 12C was the absolute best, and Calc-12E draws directly on that heritage.
While the original did what it could, 1980s technology made many features difficult, impractical or impossible to use. Calc-12E pioneered the following innovations to address shortcomings:
• you can always see what's in the financial registers (and stack if you choose) so you have instant assurance that you've entered your data correctly. This feature has been copied by nearly every emulator on the App Store, for good reason.
• visual cash flow editing radically eases how you deal with cash flows... believe it or not it is actually easy to manipulate cash flows with Calc-12E. There's a demo on YouTube, search for Calc12E.
• Investment mode allows you to simultaneously evaluate metrics on up to three cash flow scenarios at a time. You can compare cash flows side-by-side AND because of visual cash flow editing you can play what-if games
• the results of some calculations need to "leave the phone" to be useful. Amortization schedules, leasing terms, bond yields... everything can be sent via email using customizable templates
Finally, a professional tool receives continuing support and updates. It does not nag you to rate it, it does not invite you to pay to get more. It does not crash. Check out Calc-12E's version history and reviews of previous versions. This is a live, supported app with tens of thousands of long term customers and I have never charged for an upgrade or cloaked features behind ads or payw
Latest updates
4.2.3
