Comparison

Paint Calculator vs Harmonic Wave Equation Calc

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

Head to head
About

Paint Calculator

Estimate the amount of paint needed for walls or ceilings by entering a few measurements. This tool simplifies the calculation process for your painting projects.

Highlights
  • Paint quantity estimation
  • Wall and ceiling calculations
  • Simple numerical input
  • Project planning tool
Features
Read full description

How much paint do you need? Enter the room and get gallons for the job — not a guess. Paint Calculator estimates finish paint and primer from the room, openings, and the coverage on the can. Buy amounts are rounded up to whole gallons. • Length, width, and height in feet and inches • Paint walls, ceiling, or both • Subtracts 21 sq ft per door and 15 sq ft per window • Optional moulding from perimeter × width • Finish and primer coats, with coverage you can match to the label • Square-foot breakdown so you can see the math • Typical finish coverage 350 sq ft/gal; primer 250 — check the can and adjust Estimating tool only. Coverage depends on the paint, surface texture, and color change. Two finish coats is the usual job; set primer coats to 0 if you are not priming.

About

Harmonic Wave Equation Calc

This physics and math calculator quickly determines wave properties like displacement, velocity, and amplitude. It provides instant calculations with copyable results and includes reference formulas. Optimized for everyday use, it supports high precision and various units.

Highlights
  • Instant wave calculations
  • Copyable results
  • Included reference formulas
  • Supports 16 decimal places
  • Multiple unit support
  • Ad-free and private
Features
Read full description

Harmonic Wave Equation Calculator is a physics/math calculator used to find the displacement of a given point along the wave, the position of that point, the time point, wave velocity, wavelength, amplitude, or initial phase of the wave quickly and easily. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as references. - Supports up to 16 decimal places. - Supports various units for each input. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. A harmonic of such a wave is a wave with a frequency that is a positive integer multiple of the frequency of the original wave, known as the fundamental frequency. The original wave is also called the 1st harmonic; the following harmonics are known as higher harmonics. Formula: y = A * sin[(2π / λ) * (x - vt) + Φ] where: y - displacement of a given point along the wave x - position of that point (its distance from the source) t - time point v - wave velocity λ - wavelength A - amplitude Φ - initial phase of the wave Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.

Screenshots

Paint Calculator4 screens
Harmonic Wave Equation Calc4 screens

Verdict

The call

The clearest difference is price: Paint Calculator at Free against Harmonic Wave Equation Calc's $2.99. Paint Calculator also leads on update cadence (every 6 months vs every 31 months). Harmonic Wave Equation Calc's advantage is ads (none vs shown) and iOS requirement (13 vs 17.0). On in-app purchases 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

Paint Calculator is free to download; Harmonic Wave Equation Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Paint Calculator ships an update every 6 months, Harmonic Wave Equation Calc every 31 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
Paint Calculator versus Harmonic Wave Equation Calc: the parameters behind the verdict, then further details
ParameterPaint CalculatorHarmonic Wave Equation Calc
PriceFree — better$2.99
Rating—5.0 (1 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings—1 — better
Update frequencyEvery 6 months — betterEvery 31 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013 — better
Further details — not scored
Size6 MB1 MB
Age rating4+4+
DeveloperMATTHEW ALLEN CHAPMANNitrio

Customer experience

Paint Calculator

Written reviews9 reviews
Positive33.3%
Neutral22.2%
Negative44.4%

Harmonic Wave Equation Calc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Paint Calculator

No in-app purchases

None

Harmonic Wave Equation Calc

No in-app purchases

Questions

Is Paint Calculator free?
Paint Calculator is free to download, with no in-app purchases.
Is Harmonic Wave Equation Calc free?
Harmonic Wave Equation Calc costs $2.99, with no in-app purchases.
Do Paint Calculator or Harmonic Wave Equation Calc have ads?
Paint Calculator shows ads; Harmonic Wave Equation Calc does not.
Which is updated more often, Paint Calculator or Harmonic Wave Equation Calc?
Paint Calculator ships an update every 6 months, and Harmonic Wave Equation Calc every 31 months. Most recently, Paint Calculator was updated on October 23, 2026 and Harmonic Wave Equation Calc on October 27, 2026.

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