Comparison

Control+ Security & Protection vs Engine Displacement Calc

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

Head to head
About

Control+ Security & Protection

This app acts as your online financial security guard, instantly verifying website legitimacy before you enter payment details. It uses AI to detect and alert you about fake shopping sites, bank account scams, and fraudulent charges, helping you shop online with confidence and protect your savings.

Highlights
  • AI-powered website legitimacy checks
  • Real-time scam alerts
  • Protection against fake shopping sites
  • Bank account scam detection
  • Fraudulent charge prevention
  • Automatic online transaction analysis
Features
Read full description

Protect your money from online scammers. Control+ instantly checks if a website is trying to steal your credit card or bank information before you shop. Join over 10 million users who shop online with confidence. What is it? Your financial security guard online. Before you enter payment details, Control+ automatically verifies if a website is legitimate or trying to steal your money. Stop fraudulent charges and protect your bank account from scammers trying to drain your savings. How does Control+ protect your money? Our AI technology instantly alerts you about: Fake shopping sites designed to steal your credit card Scammers trying to access your bank account Fraudulent charges before they hit your statement Marketplace sellers running payment scams Unsecured payment systems that put your money at risk How does it work? When you're about to make a purchase, our AI instantly analyzes the website to verify it's legitimate. Think of it as having a fraud expert checking every transaction before you enter your payment information. Why users trust Control+ with their financial security: "Control+ saved me from entering my credit card on a scam site that looked exactly like a real store. Worth every penny." - Rated Excellent on Trustpilot Instant financial protection Takes 2 minutes to set up, then works automatically to protect your money every time you shop online. Proven to stop financial fraud Over 1.5 million users protected, with a 4.2 star rating from users who avoided financial scams and kept their money safe. Backed by Advanced Technology Developed over 5 years by 43 cybersecurity experts and data scientists, our 127 AI models have analyzed over 4 million websites. Our fraud detection is 99.86% accurate, verified through an independent 18-month security audit. Apple's standard terms and conditions: [https://www.apple.com/legal/internet-services/itunes/dev/stdeula/]. Terms and Conditions: [https://docs.controlplus.app/tos].

About

Engine Displacement Calc

Features
Read full description

Need to know the exact displacement of an engine build before ordering parts? Whether you are verifying a crate motor, sizing a swap, or checking class compliance, this app calculates total engine displacement from bore, stroke, and cylinder count in seconds. Supports metric (mm) and imperial (inches). Shows total volume in cc, liters, and cubic inches. Includes bore/stroke ratio analysis with square, oversquare, and undersquare classification. FEATURES: - Enter bore diameter, stroke length, and number of cylinders - Instant per-cylinder and total displacement - Output in cc, liters, and cubic inches simultaneously - Bore/stroke ratio with automatic classification - Metric and imperial unit toggle - Works completely offline Perfect for engine builders, mechanics, race teams, and automotive enthusiasts who need accurate displacement figures on the spot.

Screenshots

Control+ Security & Protection4 screens
Engine Displacement Calc3 screens

Verdict

The call

The clearest difference is price: Control+ Security & Protection at Free against Engine Displacement Calc's $4.99. Control+ Security & Protection also leads on update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (15.6 vs 17.0). Engine Displacement Calc's advantage is in-app purchases (none vs 15). On ads 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

Control+ Security & Protection is free to download; Engine Displacement Calc costs $4.99 up front. Control+ Security & Protection sells 12 in-app purchases, starting at $19.99 per month. Engine Displacement Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Control+ Security & Protection ships an update every 2 weeks, Engine Displacement Calc every 6 weeks. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
Control+ Security & Protection versus Engine Displacement Calc: the parameters behind the verdict, then further details
ParameterControl+ Security & ProtectionEngine Displacement Calc
PriceFree — better$4.99
Rating4.5 (1.5K ratings) — better—
Positive reviews70.5% of reviews—
Number of ratings1.5K — better—
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size69 MB1 MB
Age rating4+4+
DeveloperNational Cyber ShieldShanghai Sheyuan Network Technology Co., Ltd.

In-app purchases

12 purchases

Control+ Security & Protection

Subscriptions6
  • Control+7 Days trial$19.991 Month
  • Control+2 variants$39.993 Months
  • Control+ Protection$59.993 Months
Show 3 more
  • Control+2 variants$64.996 Months
  • Control+2 variants$99.991 Year
  • Control+ Protection$99.996 Months
One-time6
  • Dev Family Protection Add-on$37.99
  • Family Protection Add-on$37.99
  • Dev Family Protection Add-on$59.99
Show 3 more
  • Family Protection Add-on$59.99
  • Dev Family Protection Add-on$97.99
  • Family Protection Add-on$97.99
None

Engine Displacement Calc

No in-app purchases

Questions

Is Control+ Security & Protection free?
Control+ Security & Protection is free to download, with in-app purchases available.
Is Engine Displacement Calc free?
Engine Displacement Calc costs $4.99, with no in-app purchases.
Do Control+ Security & Protection or Engine Displacement Calc have ads?
Neither Control+ Security & Protection nor Engine Displacement Calc shows ads.
Which is updated more often, Control+ Security & Protection or Engine Displacement Calc?
Control+ Security & Protection ships an update every 2 weeks, and Engine Displacement Calc every 6 weeks. Most recently, Control+ Security & Protection was updated on October 21, 2026 and Engine Displacement Calc on October 18, 2026.

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