Pipe Pressure drop calculator vs SpecPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pipe Pressure drop calculator
Calculate pipe pressure drop, friction loss, and liquid velocity using the Darcy–Weisbach equation. Supports a wide range of pipe materials, liquids, and diameters for engineers and students.
- Calculate pressure drop, friction loss, and liquid velocity
- Supports 76 pipe materials
- Supports 58 liquid types
- Handles pipe diameters up to 84 inches
- Useful for pipeline design and hydraulic systems
Read full descriptionHide full description
Easily calculate pipe pressure drop, friction loss, and liquid velocity using the Darcy–Weisbach equation. This app is designed for engineers, plumbers, HVAC designers, and fluid mechanics students who need fast and accurate results for fluid flow in pipes. Features : - Choose from 76 pipe materials (steel, copper, PVC, and more) - Select from 58 types of liquids (water, oil, chemicals, etc.) - Pipe diameters up to 84 inches (2100 mm) supported - Calculate pressure loss, velocity, and head loss in seconds - Useful for pipeline design, hydraulic systems, and industrial applications Whether you’re working on plumbing design, HVAC systems, industrial pipelines, or academic projects, this app gives you a reliable way to calculate fluid flow and optimize your designs. Download now and make pipe pressure loss calculations faster, easier, and more accurate. In-app purchase Details: Lifetime Access for ads free version Privacy Policy : https://applicationcontent.wordpress.com/privacy-policy/ Terms of use : https://applicationcontent.wordpress.com/terms-of-use/
SpecPad
Read full descriptionHide full description
SpecPad is a work notebook for people who deal in drawings: plans, schematics, boards, site photos. Mark them up, measure them, keep everything organized in notebooks, and export clean PDFs when it's time to send. It started with one problem: photographing a circuit board and needing labels that point at the exact pins. So callouts in SpecPad anchor to the photo itself. Zoom way in, drag the image around, the pin stays on the pad. That same stubbornness runs through the rest of the app: revision clouds you draw by hand and type inside, drawings you calibrate once and then measure in real units, redaction bars that actually remove what's under them on export. PAGES • Canvas pages have no edges. They grow as you draw • Notepad pages are real paper sizes (Letter, A4, Tabloid — blank, grid, or lined) and print true to size • Text Documents for the days you just need to type: headings, lists, dividers • PDFs import as true vector pages. Mark them up and export with the markup embedded, while the original text stays searchable • Scan paper with the camera, or start from a photo MARKUP • Leader-line callouts anchored to the pixels of a photo • Draw a rough circle around anything and it becomes a proper scalloped revision cloud with a text box inside • Calibrate a drawing against one known length, then dimension anything on it in feet-inches or metric • Numbered pins, a count tool with running totals, Bates-style numbering • Punch lists: any markup can be Open or Resolved, and resolved items fade in reports STENCILS & STAMPS • 180 stencils across electronics, schematics, network & IT, construction, life safety, hatches, medical, education, proofreading, office, and design • Pick your workflow and the toolbar tailors itself to your trade • Star the tools you use daily to pin them to the bar • Lasso anything you've drawn and save it as a reusable stamp, or import your own stencils INK & SHAPES • Apple Pencil ink and highlighter, with shape snapping for when a rough box should become a clean one • Cables that route around parts with the label riding the wire, and named nets that light up together • Arrows, dimension lines, speech bubbles, hatches SHARING & SYNC • Export PDF, PNG, branded markup reports, and annotation schedules • Search everything, typed or handwritten • Notebooks sync with iCloud. Share one to work together • Focus mode, presentation mode, and audio recording on a page for walkthroughs SPECPAD PRO The free app is useful every single day, no paywall in your face. Pro adds unlimited pages, spreadsheet exports, path and area measurement, revision compare, and the project index. Subscribe, or buy lifetime once and be done. Made for iPad. Works on iPhone too. SpecPad comes from a small shop, not a big one. If your trade is missing a stencil or a tool, write in — I read everything. Privacy Policy: https://steinmetzlabs.com/apps/specpad/privacy.html Terms of Use: https://steinmetzlabs.com/apps/specpad/terms.html Support: https://steinmetzlabs.com/apps/specpad/support.html
Screenshots
Verdict
The clearest difference is update cadence: SpecPad at every 10 days against Pipe Pressure drop calculator's every 3 months. Pipe Pressure drop calculator's advantage is iOS requirement (13.0 vs 18.0). On price, 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
Both are free to download. Pipe Pressure drop calculator sells 1 one-off in-app purchase and SpecPad sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Pipe Pressure drop calculator ships an update every 3 months, SpecPad every 10 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Pipe Pressure drop calculator | SpecPad |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 61 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Ashvin Kevadiya | John Steinmetz |
In-app purchases
Pipe Pressure drop calculator
- Lifetime Premium$7.99
SpecPad
- SpecPad Pro - Monthly$2.991 Month
- SpecPad Pro - Yearly$17.991 Year
- SpecPad Pro - Lifetime$29.99
Questions
Is Pipe Pressure drop calculator free?
Is SpecPad free?
Do Pipe Pressure drop calculator or SpecPad have ads?
Which is updated more often, Pipe Pressure drop calculator or SpecPad?
Other comparisons















