By Ernest Brock
Report updated Apr 18, 2026
12Calc
For financial professionals and students requiring a high-accuracy, mobile-optimized version of the HP12C calculator.
Overview · Full Intel report in progress
12Calc is an established finance app that is a paid app. With a 4.9/5 rating from 900 reviews, it shows polarized user reception.
What is 12Calc?
Current Momentum
v3.0 · 7mo ago
MaintenanceLast updated 228d ago. 5 versions tracked.
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
Loading...
What Are The Key Features?
Includes 15 interactive modules for tasks such as TVM, loan amortization, cash flow analysis, and Black-Scholes calculations.
Maintains a record of calculations that users can review, print, or share via email and text.
Supports conversion between common units and currencies, with the ability to download live exchange rates.
Engineered for 64-bit iOS environments to provide instantaneous results for complex depreciation and interest schedules.
How much does it cost?
Who Built It?
Ernest Brock
Providing professionals and students with high-fidelity digital emulations of industry-standard financial and graphing calculators.
Portfolio
4
Apps
Who is Ernest Brock?
Ernest Brock has established a defensible niche by providing high-precision emulations of legacy hardware calculators like the TI-83 and HP 12C. Their strategic advantage lies in technical fidelity—leveraging 64-bit math libraries and native iOS features—to outperform both physical hardware and lower-quality free alternatives. While the category faces pressure from multi-purpose math engines, Brock maintains a moat through specialized professional workflows like TVM solvers and electronic audit tapes that cater to certified professionals.
Who is Ernest Brock for?
- Finance professionals
- Accountants
- STEM students requiring portable
- High-precision alternatives to physical hardware
Portfolio momentum
Maintained a steady cadence with 2 updates across the 4-app portfolio in the last 6 months, ensuring compatibility for its high-utility tools.
What other apps does Ernest Brock make?
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
Analysis in progress, available soon
What is the competitive landscape for 12Calc?
How's The Finance Market?
How does it evolve in the Finance market?
| Country | Category | Chart | Rank | Change |
|---|---|---|---|---|
| 🇺🇸 US | Finance | iOSPaid | #62 | ▼30 |
| 🇵🇾 Paraguay | Finance | iOSPaid | #62 |
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for 12Calc
Key Takeaways
This app provides a high-speed, feature-rich digital emulation of the HP12C calculator for professional financial modeling.
Where Is It Heading?
Trend analysis
Available very soon