Comparison

EngineCalc vs Dividend Calculator

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

Head to head
About

EngineCalc

This utility app provides a collection of essential formulas and calculators for powersports and engine tuning. It allows users to perform complex calculations directly on their iPhone, eliminating the need for a laptop or desktop computer.

Highlights
  • Powersports formulas
  • Engine tuning calculators
  • Actual Volume Flow
  • Air Density
  • Compression Ratio
  • Cylinder Displacement
  • Volumetric Efficiency
Features
Read full description

EngineCalc is the essential toolkit for engine builders, mechanics, and motorsport enthusiasts. Whether you're building a street rod, a race engine, or modifying a performance vehicle, EngineCalc puts the math at your fingertips — with the formula shown for every calculation so you always understand exactly what's happening under the hood. CALCULATORS Piston • Piston Speed — mean piston velocity from RPM and stroke • Compression Ratio — from cylinder and chamber volumes • Rod Ratio — connecting rod length to stroke relationship • Rod Length — from block length, stroke, and deck clearance • Piston Dome Volume — dome cc needed to hit a target compression ratio • Compression Height — wristpin height from deck clearance and stroke • Cylinder Displacement — total displacement from bore, stroke, and cylinder count Power • Simple Horsepower — quick HP from RPM and torque • Torque — from horsepower and RPM • Horsepower — using MEP, displacement, compression ratio, and VE • Corrected BHP — sea-level horsepower adjusted for altitude • BHP Loss — how much power elevation costs you • Volumetric Efficiency — actual vs. theoretical airflow • Theoretical Volume Flow — maximum CFM at a given RPM • Actual Volume Flow — real-world CFM with volumetric efficiency Fuel • Air Density — available oxygen from altitude and temperature • Mass Flow — air mass moving through the engine per minute • BSFC — brake specific fuel consumption and engine efficiency UNIT CONVERSIONS Thirteen categories covering every unit an engine builder needs: Torque • Pressure • Power • Volume • Temperature • Length • Mass Speed • Force • Fuel Efficiency • Frequency • Energy • Angle Type a value in any unit and all others update instantly. Categories you use most rise to the top automatically. FEATURES • Search — jump straight to any calculator by name • Metric and Standard measurement systems — switch anytime, values convert automatically • Formulas displayed for every calculator — no black boxes • Results shown with units, and shareable to any app or message • Result history — your last stored values for each calculator • Built-in guide — contextual help for calculators and conversions, available anytime • Works completely offline — no account, no subscription, no data collected

About

Dividend Calculator

Easily calculate potential dividend payouts and explore dividend reinvestment plans. This simple and intuitive tool helps you understand your potential earnings from investments. It serves as a helpful reference for financial planning.

Highlights
  • Dividend payout calculation
  • Dividend reinvestment calculator
  • Dividend ReInvestment Plan (DRIP) support
  • Intuitive and simple interface
  • Easy to use
Features
Read full description

Calculate dividend yield, estimate investment growth, and project future value with dividend reinvestment. Results assume a constant dividend yield and selected reinvestment frequency. Share price and dividend payments are assumed to remain unchanged over time. DISCLAIMER: Results are estimates for informational purposes only and should not be considered financial, investment, legal, or tax advice. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com

Screenshots

EngineCalc4 screens
Dividend Calculator3 screens

Verdict

The call

The clearest difference is price: Dividend Calculator at Free against EngineCalc's $0.99. Dividend Calculator also leads on rating (4.4 vs 3.0) and ratings volume (16 vs 4). EngineCalc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence 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

Dividend Calculator is free to download; EngineCalc costs $0.99 up front. Dividend Calculator sells 1 one-off in-app purchase. EngineCalc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dividend Calculator holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 4 and 16 respectively.

UpkeepUpdate frequency

EngineCalc ships an update every 22 months, Dividend Calculator every 28 months. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

Scorecard8 real differences · 2 level
EngineCalc versus Dividend Calculator: the parameters behind the verdict, then further details
ParameterEngineCalcDividend Calculator
Price$0.99Free — better
Rating3.0 (4 ratings)4.4 (16 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings416 — better
Update frequencyEvery 22 months — betterEvery 28 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.013.0 — better
Further details — not scored
Size13 MB5 MB
Age rating4+4+
DeveloperiTrinity, Inc.Phan Nhat Đang

Customer experience

EngineCalc

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Dividend Calculator

All ratings16 ratings
Positive87.5%
Neutral0.0%
Negative12.5%

In-app purchases

None

EngineCalc

No in-app purchases

1 purchases

Dividend Calculator

One-time1
  • Unlock all features$1.99

Questions

Is EngineCalc free?
EngineCalc costs $0.99, with no in-app purchases.
Is Dividend Calculator free?
Dividend Calculator is free to download, with in-app purchases available.
Which has better reviews, EngineCalc or Dividend Calculator?
Dividend Calculator is rated higher. EngineCalc averages 3.0 out of 5 from 4 ratings, while Dividend Calculator averages 4.4 from 16 ratings.
Do EngineCalc or Dividend Calculator have ads?
Dividend Calculator shows ads; EngineCalc does not.
Which is updated more often, EngineCalc or Dividend Calculator?
EngineCalc ships an update every 22 months, and Dividend Calculator every 28 months. Most recently, EngineCalc was updated on October 11, 2026 and Dividend Calculator on October 5, 2026.

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