Resistor Tools Pro vs Pipe Working Pressure Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor Tools Pro
This utility app offers a suite of tools for calculating and finding resistor combinations. It's designed for electronics enthusiasts and professionals needing to determine series, parallel, and voltage divider configurations. Save and share your calculations easily.
- Calculate series/parallel resistance
- Find resistor combinations for desired resistance
- Voltage divider ratio and value calculation
- Inverting amplifier gain calculation
- Save combinations to CSV
- Share via AirDrop
- Upload CSV to iCloud Drive
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This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer. * Calculate resistance of 2 resistors in series or parallel * Find out combinations of 2 resistors in series/parallel making a desired resistance * Calculate ratio of R1/R2 and voltage divider * Find out resistor values of making voltage divider ratio * Find out resistor values of making inverting amplifier gain * Save combination values in CSV file * Share document via AirDrop * Upload CSV file to iCloud Drive (For iOS8 or later)
Pipe Working Pressure Calc
Calculate fluid pressure, pipe wall thickness, outside diameter, safety factor, or material strength. This physics/math tool provides instant results with support for multiple units and high precision.
- Instant calculations
- Copy results to other apps
- Formulas included
- Supports 16 decimal places
- Supports various units
- Works on iPhone and iPad
- Ad-free and private
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Pipe Burst Working Pressure Calculator is a physics/math tool designed to calculate fluid pressure, pipe wall thickness, pipe outside diameter, safety factor, or material strength. Features: - Instant calculations. - Results can be copied to other apps. - Formulas included for reference. - 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. To find the burst pressure of a pipe, Barlow's Formula is used, along with associated equations to determine the working pressure of a pipe with a known diameter. Barlow’s Formula establishes the relationship between internal pressure, allowable stress, nominal thickness, and diameter. Equation: P = (2*S*T)/(OD*SF) Where: P = Fluid Pressure (psi) T = Pipe Wall Thickness (in) OD = Pipe Outside Diameter (in) SF = Safety Factor (for general calculations, use 1.5 – 10; use 1 for bursting pressure) S = Material Strength (psi), minimum yield strength Thank you for your support! Visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is update cadence: Resistor Tools Pro at every 2 months against Pipe Working Pressure Calc's every 28 months. Resistor Tools Pro also leads on price ($0.99 vs $2.99). On rating, ratings volume, ads and in-app purchases 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
Resistor Tools Pro costs $0.99 and Pipe Working Pressure Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.0 for Resistor Tools Pro against 4.0 for Pipe Working Pressure Calc. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Resistor Tools Pro ships an update every 2 months, Pipe Working Pressure Calc every 28 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.
| Parameter | Resistor Tools Pro | Pipe Working Pressure Calc |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 4.0 (1 ratings) | 4.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 2 months — better | Every 28 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13 |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Nitrio |
Customer experience
Resistor Tools Pro
Pipe Working Pressure Calc
In-app purchases
Resistor Tools Pro
No in-app purchases
Pipe Working Pressure Calc
No in-app purchases
Questions
Is Resistor Tools Pro free?
Is Pipe Working Pressure Calc free?
Which has better reviews, Resistor Tools Pro or Pipe Working Pressure Calc?
Do Resistor Tools Pro or Pipe Working Pressure Calc have ads?
Which is updated more often, Resistor Tools Pro or Pipe Working Pressure Calc?
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