Comparison

PipeDN vs PipeSizer

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

Head to head
About

PipeDN

Features
Read full description

Need to determine the pipe size for a new industrial project? Want to check the maximum recommended flow rate for an existing fluid line? PipeDN is the ultimate pocket tool for industry professionals. Quickly find the ideal Nominal Diameter (DN) or maximum operating flow rate using velocity limits based on practical, field-tested engineering standards. Beyond delivering the exact requirement, the app generates a smart reference table of neighboring commercial pipe sizes (larger and smaller). This gives you the comprehensive technical data to choose the best design alternative for your facility. Highlighted Features: • Calculation Modules: "Find Ideal DN" and "Find Max Flow". • Native support for multiple pipe materials and schedules. • Professional PDF Reports: Export a detailed calculation memory directly to PDF. Include specific pipeline TAGs for customized, ready-to-archive engineering results. • Custom Units: Fully adapt pressure, temperature, flow rate, and diameter unit sets to match your region's standard. • Embedded Physical Tables: The Steam module features built-in thermodynamic properties for precise dynamic density tracking. Supported Fluids & Applications: • Water & Condensate: Treated Water, Condensate (Pump Discharge, Pump Suction, Steam Trap Return). • Steam: Advanced sizing targeting Saturated Steam and Superheated Steam lines. • Process Gases: Combustion Air, Flammable & Non-Flammable Gases, Nā‚‚, Oā‚‚, LPG. • Compressed Air: Limits tailored for Main Lines and Secondary Branches. • Vacuum Systems (Manifolds, Separators, Blowers). • Pulp & Paper Industry Niche: Exclusive calculation module for Cellulose Pulp responding to various consistency levels (up to 6%), as well as comprehensive chemical recovery liquors (Black Liquor in 4 concentrations, Green Liquor, Lime Mud, Dregs, Filtrate, Alkalis, and Tall Oil Soap). • Common Chemicals: Sodium Hydroxide, Sulphuric Acid, Antifoams, and Lubricating Oils. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

PipeSizer

Read full description

PipeSizer helps piping and process engineers screen pipe diameters quickly using flow rate, pipe material, schedule, liner, and traceable velocity ranges. Enter your design conditions and PipeSizer ranks candidate nominal pipe sizes by calculated velocity. The result highlights the best candidate, effective internal diameter, velocity status, and nearby alternatives so you can compare options without rebuilding a spreadsheet. KEY FEATURES • Rank candidate pipe diameters from your flow rate • Compare velocity against traceable recommended ranges • Support for clean water, process fluids, slurry, and utility lines • Carbon steel, stainless steel, HDPE, and common schedules or DR values • Optional liner allowance • SI and Imperial units • Save and reopen sizing results • Share results using the iOS share sheet • Send selected pipe data to Pump Mate • English, Spanish, French, and Portuguese • Fully functional offline PipeSizer is free and designed for fast engineering screening in the office or field. ENGINEERING NOTICE PipeSizer is a screening aid. Verify final selections against project criteria, applicable codes, manufacturer data, and a qualified engineering review.

Screenshots

PipeDN4 screens
PipeSizer4 screens

Verdict

The call

The clearest difference is in-app purchases: PipeSizer at none against PipeDN's 3. PipeDN's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. PipeDN sells 3 in-app purchases, starting at $7.99 per month. PipeSizer asks for nothing beyond the download.

UpkeepUpdate frequency

PipeDN ships an update every 3 weeks, PipeSizer every 6 weeks. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

Scorecard2 real differences Ā· 4 level
PipeDN versus PipeSizer: the parameters behind the verdict, then further details
ParameterPipeDNPipeSizer
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size40 MB46 MB
Age rating4+4+
DeveloperAQUILES DE LIMAMario Cerda

In-app purchases

3 purchases

PipeDN

Subscriptions2
  • PipeDN Pro$7.991 Month
  • PipeDN Pro$49.991 Year
One-time1
  • PipeDN Pro$79.99
None

PipeSizer

No in-app purchases

Questions

Is PipeDN free?
PipeDN is free to download, with in-app purchases available.
Is PipeSizer free?
PipeSizer is free to download, with no in-app purchases.
Do PipeDN or PipeSizer have ads?
Neither PipeDN nor PipeSizer shows ads.
Which is updated more often, PipeDN or PipeSizer?
PipeDN ships an update every 3 weeks, and PipeSizer every 6 weeks. Most recently, PipeDN was updated on October 5, 2026 and PipeSizer on October 1, 2026.

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