Comparison

MajorCalculator vs Camera Seal Checker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MajorCalculator

This utility app simplifies complex calculations with a wide range of tools, including arithmetic, tax, unit conversion, 3D shapes, and kinship. It offers features like calculation history, memo bookkeeping, and customizable themes for an enhanced user experience.

Highlights
  • Arithmetic and advanced calculations
  • Income tax and mortgage calculation
  • Extensive unit conversion
  • 3D shape property calculations
  • Kinship relationship identification
  • Calculation history and memo bookkeeping
  • Customizable themes and skins
Features
Read full description

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: Length | Mass | Area | Pressure | Speed | Internet Speed | Time | Power | Energy | Frequency | Fuel Consumption | Brightness [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] Privacy Policy: https://sites.google.com/view/xiaofangjisuan/yingsi Terms of Service: https://sites.google.com/view/xiaofangjisuan/tiaokuan

About

Camera Seal Checker

Features
Read full description

Confidence that every lens is covered. Camera Seal Checker helps security-focused teams confirm their camera modules are properly sealed — fast, clear, and reliable. Built for controlled environments like factories, R&D labs, secure offices, and regulated facilities. FEATURES • One-tap full check Scan every camera module on your iPhone or iPad in a single guided flow. • Live module cards Each lens gets its own card with clear, at-a-glance status. • Two detection modes – Image Model: a live confidence bar with an acceptance limit. – Threshold: live Average Luma, Edge Density, and Focus (Blur) readings, each with a limit line. • Real-time results Modules update one by one as the check runs. • Reminders that fit your routine – Weekly, on the days and times you choose. – Location-based, triggered as you arrive at or leave a site. • Check from a tap Start a seal check straight from a notification. • Compliance log Every check is recorded for review, audits, and internal reporting. PRIVATE BY DESIGN All detection runs on your device. Your camera images are never uploaded. WHY CAMERA SEAL CHECKER Fast to run. Easy to read. Dependable every day — practical security compliance, without the friction.

Screenshots

MajorCalculator4 screens
Camera Seal Checker4 screens

Verdict

The call

The clearest difference is in-app purchases: Camera Seal Checker at none against MajorCalculator's 3. Camera Seal Checker also leads on ads (none vs shown). MajorCalculator's advantage is iOS requirement (15.6 vs 26.0). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MajorCalculator sells 3 in-app purchases, starting at $1.99 per month. Camera Seal Checker asks for nothing beyond the download.

UpkeepUpdate frequency

MajorCalculator ships an update fortnightly, Camera Seal Checker every 8 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 7 level
MajorCalculator versus Camera Seal Checker: the parameters behind the verdict, then further details
ParameterMajorCalculatorCamera Seal Checker
PriceFreeFree
Rating4.8 (37 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings37 — better—
Update frequencyFortnightlyEvery 8 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.0
Further details — not scored
Size26 MB6 MB
Age rating4+4+
Developer旭 王JuHun Choi

In-app purchases

3 purchases

MajorCalculator

Subscriptions3
  • Preminum 1 Month$1.991 Month
  • Premium 1 Quarter$5.993 Months
  • Premium 1 Year$9.991 Year
None

Camera Seal Checker

No in-app purchases

Questions

Is MajorCalculator free?
MajorCalculator is free to download, with in-app purchases available.
Is Camera Seal Checker free?
Camera Seal Checker is free to download, with no in-app purchases.
Do MajorCalculator or Camera Seal Checker have ads?
MajorCalculator shows ads; Camera Seal Checker does not.
Which is updated more often, MajorCalculator or Camera Seal Checker?
MajorCalculator ships an update fortnightly, and Camera Seal Checker every 8 days. Most recently, MajorCalculator was updated on November 3, 2026 and Camera Seal Checker on November 9, 2026.

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