Engineer Calculator vs PipeSizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engineer Calculator
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Engineer Calculator is a clean, fast reference tool built for electronics engineers and embedded developers. Whether you're on the bench or in a meeting, get instant answers without hunting through datasheets or opening a laptop. TOOLS INCLUDED • HEX/BIN/DEC Converter — Convert between hexadecimal, binary, and decimal in real time • Calculator — Standard arithmetic for quick on-the-fly calculations • I²C Address Converter — Convert 7-bit to 8-bit addresses with read/write breakdown • Capacitor Unit Converter — Instantly convert between pF, nF, µF, mF, and F • Voltage Divider — Calculate output voltage, current, and power dissipation • LDO Vout Calculator — Solve for Vout, R1, or R2 with circuit diagram reference • Resistance Calculator — Total resistance for series and parallel configurations • Switching Power Design — Interactive DC-DC converter design tool DESIGNED FOR ENGINEERS No clutter, no ads, no unnecessary features. Every tool includes formula references and circuit diagrams so you always know what you're calculating and why. Works great on all screen sizes. Supports light and dark mode automatically.
PipeSizer
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PipeSizer is a fast, practical pipe-diameter screening tool for engineers and field technicians. Enter one or more flow rates, choose the fluid, pipe material, schedule or dimension ratio, and optional liner, then compare ranked candidate sizes against a traceable velocity range. KEY FEATURES • Ranked candidate pipe sizes with velocity and effective internal diameter • Multiple flow cases with a clearly identified governing condition • Carbon steel, stainless steel, and HDPE sizing options • Optional liner allowance • Traceable velocity ranges with source information • Saved results for later review • Shareable result summaries • Direct handoff to Pump Mate for detailed hydraulic analysis • SI and imperial units • English, Spanish, French, and Portuguese • Works offline with no account required PipeSizer is free, contains no advertising, and has no in-app purchases. ENGINEERING NOTICE PipeSizer is intended for preliminary engineering screening. Final pipe selections must be verified against project specifications, applicable codes and standards, manufacturer data, operating conditions, and qualified engineering judgment.
Screenshots
Verdict
The clearest difference is device support: PipeSizer at 3 against Engineer Calculator's —. On price, in-app purchases and iOS requirement 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Engineer Calculator | PipeSizer |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 5 weeks |
| Ads | — | No |
| In-app purchases | No | No |
| Devices | — | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 22 MB | 53 MB |
| Age rating | 17+ | 4+ |
| Developer | Sooseok Oh | Mario Cerda |
In-app purchases
Engineer Calculator
No in-app purchases
PipeSizer
No in-app purchases





