Comparison

HydroCalc Basic vs Culvert Studio

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

Head to head
About

HydroCalc Basic

Features
Read full description

Pipe Headloss Calculator provides engineers, designers, and students with powerful tools for pipeline hydraulic analysis β€” without the hassle of complex manual computations. Whether you’re sizing new pipelines or analyzing existing systems, the app delivers rapid, accurate results. Key Features Automatic Unit Conversion – Seamlessly switch between US Customary and SI units for length, flow, and diameter. Pipeline-Specific Inputs – Enter pipeline length, flow rate, internal diameter, and pipe material. Powerful Inverse Calculator – Set a target head loss and calculate the required diameter, flow, or length. Instantly view flow velocity, friction head loss, fitting losses, and full system curve data. With a clean interface and fast performance, this app is designed to save time and improve accuracy in hydraulic calculations β€” from the classroom to the field.

About

Culvert Studio

Features
Read full description

Culvert Studio is a free, educational showcase of our engineering-software capabilities β€” built to demonstrate the kind of tools we can create for professionals in civil engineering, drainage, stormwater, and hydrology. WHAT YOU CAN EXPLORE - Rational Method + Manning's equation for peak-flow and culvert sizing - Recommended culvert size, design flow, and velocity β€” in seconds - Inlet/outlet control analysis with performance curves and headwater checks - Multi-barrel, orifice, weir, and tidal-tailwater analysis for coastal culverts OFFLINE CANADIAN IDF DATA - 565 IDF weather stations across all 13 provinces and territories - 28,900+ data points β€” rainfall intensity/duration/frequency curves, fully offline - No internet required at the job site VISUALIZE & VERIFY - Interactive 2D/3D culvert profile with design-flow animation - Velocity, HW/D, and compliance checks against provincial drainage manuals (ON, AB, BC, SK, MB, QC) - Save projects and calculations; export reports as PDF or GeoJSON/KML MORE THAN A CALCULATOR - Bridge hydraulics, fish passage, detention, channel, and drainage-network tools - Environmental data integration: tidal (CHS IWLS), snow (ECCC), hydrometric (WSC) - Bilingual English / FranΓ§ais AN EDUCATIONAL DEMONSTRATION Culvert Studio is provided as an educational, experimental showcase of what we can build β€” not as a substitute for professional design software. Always have results verified by a qualified engineer. Built for Canadian conditions. Works offline. If you work in civil engineering, drainage, stormwater, or hydrology, we'd love to hear from you. Request a feature, suggest an improvement, or contact us about a custom solution.

Screenshots

HydroCalc Basic4 screens
Culvert Studio4 screens

Verdict

The call

The clearest difference is in-app purchases: Culvert Studio at none against HydroCalc Basic's 1. Culvert Studio also leads on update cadence (daily vs every 11 days). On price, ads, device support and iOS requirement there is nothing between them.

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

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

Both are free to download. HydroCalc Basic sells 1 one-off in-app purchase. Culvert Studio asks for nothing beyond the download.

UpkeepUpdate frequency

HydroCalc Basic ships an update every 11 days, Culvert Studio daily. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

Scorecard2 real differences Β· 4 level
HydroCalc Basic versus Culvert Studio: the parameters behind the verdict, then further details
ParameterHydroCalc BasicCulvert Studio
PriceFreeFree
Update frequencyEvery 11 daysDaily β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.1 β€” better16.0
Further details β€” not scored
Size35 MB43 MB
Age rating4+4+
DeveloperTransparent Blue Water LLCJagdeep Singh

In-app purchases

1 purchases

HydroCalc Basic

One-time1
  • Premium - Flow Units & Ad-Free$1.99
None

Culvert Studio

No in-app purchases

Questions

Is HydroCalc Basic free?
HydroCalc Basic is free to download, with in-app purchases available.
Is Culvert Studio free?
Culvert Studio is free to download, with no in-app purchases.
Do HydroCalc Basic or Culvert Studio have ads?
Neither HydroCalc Basic nor Culvert Studio shows ads.
Which is updated more often, HydroCalc Basic or Culvert Studio?
HydroCalc Basic ships an update every 11 days, and Culvert Studio daily. Most recently, HydroCalc Basic was updated on October 4, 2026 and Culvert Studio on October 2, 2026.

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