Comparison

Calc pH vs Pipe Coil Development Pro

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

Head to head
About

Calc pH

Features
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*** pH - Calculator *** "pH - calculator" is used to calculate the pH value of two mixed liquids. Enter the pH and volume for both liquids and then press calculate. The mixed pH-value will then be displayed..

About

Pipe Coil Development Pro

Features
Read full description

Pipe Coil Calculator is a professional fabrication and engineering tool for calculating pipe coil lengths, limpet coil lengths, half-pipe jacket lengths, and coil development layouts used in process equipment manufacturing. It is designed for fabrication engineers, mechanical engineers, pressure vessel fabricators, process equipment manufacturers, estimators, and workshop professionals working with reactors, agitators, mixers, pressure vessels, and other industrial equipment. Available Calculators 1. Internal / External Helical Coil Calculate the required length of internal or external helical pipe coils for vessels and industrial equipment. Useful for coil fabrication, material estimation, and costing. 2. Shell Limpet / Half-Pipe Jacket Coil Calculate the required length of limpet coil or half-pipe jacket installed on cylindrical shells. Inputs include shell diameter, number of turns, and coil pitch. The result can be used for fabrication planning, material estimation, and costing. 3. Dish End Limpet Coil Calculate the required length of limpet coil installed on pressure vessel dish ends using coil starting arc distance, number of turns, and pitch. 4. Dish End Limpet Development Develop sector-based layouts for fabricating half-pipe jackets on dish ends. Inputs include: • Dish crown radius • Dish thickness • Pipe coil outside diameter • Pipe thickness • Coil pitch • Sector starting distance • Sector ending distance The calculator provides development information for individual sectors to simplify dish end limpet coil layout and fabrication. Key Features • Internal and external helical coil length • Shell limpet coil length • Half-pipe jacket length • Dish end limpet coil length • Dish end limpet development • Sector-based coil layout • Coil pitch and turn calculations • Shell and dish end calculations • Cord distance consideration for practical coil-end matching • Metric and Imperial units • mm and inch dimensions • Automatic unit conversion • Fabrication-friendly results • Simple and professional interface • Fast calculations • No internet connection required • No distracting advertisements Applications Pipe Coil Calculator is useful for: • Pressure Vessel Fabrication • Process Equipment Manufacturing • Chemical Reactors • Agitators and Mixers • Jacketed Vessels • Storage Equipment • Industrial Process Equipment • Limpet Coil Fabrication • Half-Pipe Jacket Fabrication • Coil Rolling and Fabrication • Material Estimation and Costing Whether you need to calculate a helical pipe coil, shell limpet coil, dish end coil, or develop sectors for a half-pipe jacket, Pipe Coil Calculator provides practical calculation tools for everyday fabrication and engineering work. For fabrication layouts, use appropriate dimensions and allowances according to your actual manufacturing method and project requirements.

Screenshots

Calc pH2 screens
Pipe Coil Development Pro4 screens

Verdict

The call

The clearest difference is price: Calc pH at Free against Pipe Coil Development Pro's $3.99. Calc pH also leads on iOS requirement (9.0 vs 16.1). On update cadence, ads, 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

Calc pH is free to download; Pipe Coil Development Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calc pH ships an update every 59 months, Pipe Coil Development Pro every 41 months. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

Scorecard2 real differences · 4 level
Calc pH versus Pipe Coil Development Pro: the parameters behind the verdict, then further details
ParameterCalc pHPipe Coil Development Pro
PriceFree — better$3.99
Update frequencyEvery 59 monthsEvery 41 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS9.0 — better16.1
Further details — not scored
Size0 MB1 MB
Age rating4+4+
DeveloperZOFTERMImran Pinjara

In-app purchases

None

Calc pH

No in-app purchases

None

Pipe Coil Development Pro

No in-app purchases

Questions

Is Calc pH free?
Calc pH is free to download, with no in-app purchases.
Is Pipe Coil Development Pro free?
Pipe Coil Development Pro costs $3.99, with no in-app purchases.
Do Calc pH or Pipe Coil Development Pro have ads?
Neither Calc pH nor Pipe Coil Development Pro shows ads.
Which is updated more often, Calc pH or Pipe Coil Development Pro?
Calc pH ships an update every 59 months, and Pipe Coil Development Pro every 41 months. Most recently, Calc pH was updated on September 17, 2026 and Pipe Coil Development Pro on September 8, 2026.

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