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Report updated Apr 16, 2026

10BII Calc HD is a market-leading finance app that is a paid app. With a 4.9/5 rating from 3.7K reviews, it delivers strong user satisfaction. Users particularly appreciate reliability and stability, though naming/searchability remains a common concern.

What is 10BII Calc HD?

10BII Calc HD is a premium financial calculator app emulating the HP 10bII hardware, targeting finance professionals and students. It distinguishes itself through high reliability, a one-time purchase model, and advanced interactive worksheets. It currently holds a strong position in the US Paid Finance charts (#59).

Current Momentum

v3.8

• Restored memory save between uses • More iOS26 fixes

Active Nemesis

10bii+ Financial Calculator

10bii+ Financial Calculator

By Vicinno Soft

Other Rivals

HP 12c Financial Calculator
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BA Calc - Financial Calculator
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PCalc
金融复利计算器:Financial Calculator
Karl's Mortgage Calculator
Solves: Calculator for All

7-Day Rank Pulse 🇺🇸

Finance
#20
9

Rating Pulse 🇺🇸

Recent User Mood

What makes this app unique?

What Does It Look Like?

What Are The Key Features?

Specialized TVM SolverDifferentiator

Dedicated window for Time Value of Money calculations that displays all variable contents for rapid 'what if' analysis.

Electronic Audit TapeDifferentiator

Records all calculations with the ability to mail, text, or print the history.

Interactive WorksheetsDifferentiator

Pre-built templates for complex tasks like Black-Scholes, bond pricing, and cash flow analysis with interactive graphs.

Contextual Help SystemDifferentiator

Built-in user manual accessible via a '?' key for every function and worksheet.

Financial & Scientific FunctionsStandard

Comprehensive suite of business, statistical, and scientific math functions including trig and unit conversions.

How much does it cost?

Paid
  • One-time purchase of $8.99

Premium, one-time purchase model targeting professionals who prefer a standalone tool over subscription-based financial apps.

Who Built It?

Ernest Brock app icon 1
Ernest Brock app icon 2
Ernest Brock app icon 3
Ernest Brock app icon 4

Ernest Brock

(4.9K)

Providing professionals and students with high-fidelity digital emulations of industry-standard financial and graphing calculators.

Portfolio

4

Apps

Paid 3
Finance67%
Education33%

Explore the full Ernest Brock report

Portfolio breakdown, audience, momentum, and every app published by Ernest Brock.

Go deeper

What do users think recently?

High confidence · Latest 100 of 3.7K total reviews analyzed

How did the latest release land?

Overall
4.9/ 5
(3.7K)
Current version
4.9/ 5
0.0 vs overall
(3.7K)
Main signal post-update: reliability and Stability.

What is the recent mood?

Thrilled

Recent user voice shows a thrilled sentiment. Users appreciate reliability and stability and feature parity and enhancement, but report naming/searchability and missing niche functions.

What Users Love

Reliability and Stability
Feature Parity and Enhancement

What Frustrates Users

Naming/Searchability
Missing Niche Functions

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

What is the competitive landscape for 10BII Calc HD?

Where is it available?

Localized markets (1)

United States

How's The Finance Market?

How does it evolve in the Finance market?

Rank progression

47 active rankings tracked — 30-day window

No rank history available for this chart.

The rivals identified

The outtake for 10BII Calc HD

Strengths to defend, gaps to attack

Core Strengths

  • Exceptional stability and reliability record
  • Deep feature set exceeding hardware capabilities
  • High user loyalty via one-time purchase model
  • Universal iPad/iPhone support with Split View

Critical Frictions

  • Poor SEO/ASO due to naming conventions
  • Lack of social media presence
  • Legacy hardware aesthetic may not appeal to younger users

Growth Levers

  • Capitalize on subscription fatigue in marketing
  • Expand into niche markets like fractional math for trades
  • Improve ASO for keywords like 'HP 10bII' and 'Real Estate'

Market Threats

  • Modern UI disruptors (Solves, Tydlig)
  • Direct competitors improving their ASO/SEO
  • Platform changes favoring subscription models

Key Takeaways

10BII Calc HD is a market-leading finance app that is a paid app. With a 4.9/5 rating from 3.7K reviews, it delivers strong user satisfaction. Users particularly appreciate reliability and stability, though naming/searchability remains a common concern.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by 10BII Calc HD, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “10BII Calc HD Intelligence Report.” Updated Apr 16, 2026. https://marlvel.ai/apps/com-ernestbrock-calc10biihd

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