Report updated Apr 16, 2026
10bii Financial Calculator
For financial professionals, real estate investors, and students who need a powerful, HP-modeled calculator that remains accessible for everyday personal finance planning.
10bii Financial Calculator is a well-regarded finance app that is a paid app. With a 4.6/5 rating from 1.5K reviews, it maintains solid user satisfaction. Users particularly appreciate functional parity with physical calculators, though technical bugs and crashes remains a common concern.
What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Simplifies complex financial calculations into plain-language questions for non-experts
Automatically generates diagrams for TVM and uneven cash flow scenarios
In-app purchase unlocking advanced functions like bonds, depreciation, trig, and probability
Generates, prints, and saves PDF amortization schedules
Calculates standard deviation, mean, and linear regression with graphing capabilities
Spreadsheet-like interface for entering and managing uneven cash flows
How much does it cost?
- Base app: $5.99 - $7.99 (One-time)
- 10bii+ features: $3.99 (In-app purchase)
Uses a modular paid model that avoids subscription fatigue while upselling professional-grade features to power users.
Who Built It?
K2 Cashflow
Providing specialized financial tools and niche board game utilities for professionals and tabletop hobbyists.
Portfolio
6
Apps
What other apps does K2 Cashflow make?
Explore the full K2 Cashflow report
Portfolio breakdown, audience, momentum, and every app published by K2 Cashflow.
What do users think recently?
High confidence · Latest 100 of 1.5K total reviews analyzed
How did the latest release land?
What is the recent mood?
Recent user voice shows a excited sentiment. Users appreciate functional parity with physical calculators and professional utility, but report technical bugs and crashes and learning curve and ui frustration.
What Users Love
What Frustrates Users
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for 10bii Financial Calculator?
How's The Finance Market?
How does it evolve in the Finance market?
Rank progression
114 active rankings tracked — 30-day window
The rivals identified
The outtake for 10bii Financial Calculator
Strengths to defend, gaps to attack
Core Strengths
- High-fidelity HP 10bII hardware emulation
- Unique visual financial tools (Cashflow Diagrams)
- Highly responsive developer support
- Easy Mode accessibility for non-pros
Critical Frictions
- Dated UI/UX compared to modern productivity apps
- Stability issues on latest Android OS versions
- Steep learning curve for users unfamiliar with financial math logic
Growth Levers
- Modernize UI with a 'Standard' vs 'Legacy' toggle
- Implement an onboarding wizard to reduce user configuration errors
- Expand Easy Mode to include modern finance topics like SaaS or Crypto
Market Threats
- Official HP-branded mobile applications
- Free comprehensive financial suites (e.g., EZ Financial)
- Modern document-style calculators (e.g., Tally) disrupting the keypad paradigm
Key Takeaways
10bii Financial Calculator is a well-regarded finance app that is a paid app. With a 4.6/5 rating from 1.5K reviews, it maintains solid user satisfaction. Users particularly appreciate functional parity with physical calculators, though technical bugs and crashes remains a common concern.
Where Is It Heading?
Mixed Signals
The app has transitioned to a paid model and expanded its feature set, resulting in a more positive overall sentiment despite emerging technical stability issues.