Calculator integrates multiple practical functions including arithmetic calculation, income tax calculation, unit conversion, 3D shape calculations, mortgage calculation, and kinship relationship calculation.

Records complete calculation processes for easy reference, with comment insertion for bookkeeping

Clear history log for instant access and reuse

Built-in stylish skins with customizable themes

Voice broadcast and keypress sounds enhance the calculation experience

[Basic Calculator]

Basic calculations, long expressions, fractions, and bracket operations with voice broadcast and keypad sounds. Outperforms system calculators.

[Income Tax Calculator]

Scientifically calculates tax based on pre-tax income, threshold, social insurance, housing fund, and other deductions.

[Unit Converter]

Supports conversions for:

[3D Shape Calculator]

Calculations for: Cube, Cuboid, Cylinder, Cone, Pyramid, Prism, Frustum, Sphere, Torus, Cylindrical Ring, Regular Hexagonal Prism

Properties include: Length, Width, Height, Perimeter, Volume, Capacity, Area, Surface Area, Base Area, Radius, Diameter, Circle Area, Circumference, Generatrix Length, Edge Length, Platform Height

[Kinship Calculator]

Instantly identifies relatives like aunts, uncles, and in-laws. Never misaddress family members again!

[History Records]

Auto-saved calculation logs for easy bookkeeping and data security.

[Memo Bookkeeping]

Add notes to track income/expense sources for every calculation.

[RMB Capitalization]

Converts numbers to Chinese RMB capital letters for easier invoicing and reimbursement.

[More Features]

Reuse Results: Apply previous results directly in new calculations

Edit/Delete: Modify any expression with highlighted results

Copy: Copy single lines or full calculations for sharing

Font Adjustment: Adjustable font sizes with elderly-friendly mode

Dark/Light Theme: Eye-friendly modes for day/night use

12 Premium Skins: Customize any color scheme

Corner Styles: Choose rounded or square interfaces

Key Sounds: Multiple feedback tones to prevent mis-taps

Voice Broadcast: Real-time voice confirmation of inputs

Date Stamping: Automatic date tagging for traceability

10-Decimal Precision: High-accuracy calculations

Rounding Options: Round up/down or use standard rounding

[Contact Us]

QQ: 1260269149

[Subscription]

Plans: Monthly (1 month), Quarterly (3 months), Annual (12 months)

Pricing:

Monthly: $1.99/month

Quarterly: $5.99//quarter

Annual: $ 9.99/year

Payment: Charged to iTunes account upon confirmation

Auto-renewal: iTunes charges 24 hours before expiration

Benefits: All skins + Ad-free experience

Cancellation: Disable auto-renewal ≥24 hours before renewal

Management: Modify subscriptions via account settings

[Legal]

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