Comparison

Sewer Pipe Calculator vs FireSprinkPro

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

Head to head
About

Sewer Pipe Calculator

Features
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Sewer Pipe Calculator designs and checks gravity sewer and storm drain pipes with the Manning equation for partially full circular pipes. Enter what you know and get what is missing. 6 GRAVITY CALCULATORS (FREE) • Velocity & Depth: flow, slope and diameter → velocity and water depth • Diameter from Flow: minimum diameter and the next commercial size from your catalog • Slope Range: minimum and maximum slope that meet velocity, depth and self-cleansing criteria • Minimum Slope & Diameter: when only the flow is known • Flow & Velocity from Depth: analyze an existing pipe • Flow Analysis: flow, velocity, hydraulic radius, h/D, Froude number and tractive force SELF-CLEANSING CHECK Tractive force τ = ρ·g·R·S next to the velocity, with a color verdict: self-cleansing OK or sedimentation risk. A pipe can meet the minimum velocity and still fail on tractive force. PIPE CATALOGS PVC, concrete, vitrified clay and corrugated HDPE (SI and US) with their Manning n and commercial diameters. PRO • Export any calculation to PDF and save/load calculations • Custom pipe catalogs STRUCTURES PACK Inverted siphon (automatic sizing), pump station (wet well volume, pump power, cycle times), weirs and overflows, minor losses and manholes, orifices and gates. FORCE MAIN PACK Total dynamic head with Hazen-Williams, economic diameter (Bresse) and water hammer (Joukowsky), with the TDH passed straight to the pump station. COLLECTOR DESIGNER Design a full sewer line segment by segment, like a spreadsheet: flow accumulates and invert levels propagate downstream, every segment is checked for velocity, tractive force, h/D, cover and surcharge, with a longitudinal profile and a PDF design table. SI and US units. English and Spanish. Works offline. For civil and sanitary engineers, designers and students working on sewer networks, storm drainage and simplified sewerage systems.

About

FireSprinkPro

Features
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FireSprinkPro is a professional-grade fire sprinkler hydraulic calculation app for fire protection engineers and designers. Design and analyse wet, dry, deluge, and foam-water sprinkler systems directly on your iPhone or iPad. FireSprinkPro uses the Hardy Cross iterative method with Hazen-Williams friction loss to accurately calculate flow and pressure throughout your pipe network. FEATURES • Pipe network node and branch editor • Hazen-Williams hydraulic calculations • Hardy Cross iterative solver • Automatic most demanding area selection • Demand vs supply curve analysis • Calculation report export • Import and export project files (.fsp) • Design and perform hydraulic calculations offline, with internet access required for account and licence verification • Sample project included to get started immediately DESIGNED FOR PROFESSIONALS FireSprinkPro is built for fire protection engineers, hydraulic designers, and contractors who need accurate, portable calculations in the field or office. All calculations follow standard fire protection hydraulic principles used in NFPA 13, SANS 10287, and similar codes.

Screenshots

Sewer Pipe Calculator4 screens
FireSprinkPro4 screens

Verdict

The call

Sewer Pipe Calculator and FireSprinkPro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sewer Pipe Calculator sells 3 one-off in-app purchases and FireSprinkPro sells 2 in-app purchases, starting at $17.49 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sewer Pipe Calculator ships an update every 10 days, FireSprinkPro weekly. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

ScorecardNo meaningful differences
Sewer Pipe Calculator versus FireSprinkPro: the parameters behind the verdict, then further details
ParameterSewer Pipe CalculatorFireSprinkPro
PriceFreeFree
Update frequencyEvery 10 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.6
Further details — not scored
Size31 MB21 MB
Age rating4+4+
DeveloperTransparent Blue Water LLCMichael Fritz

In-app purchases

3 purchases

Sewer Pipe Calculator

One-time3
  • SewerCalc Pro$2.99
  • Structures Pack$3.99
  • Sewer Designer$7.99
2 purchases

FireSprinkPro

Subscriptions1
  • FireSprinkPro Monthly$17.491 Month
One-time1
  • FireSprinkPro Lifetime License$175.99

Questions

Is Sewer Pipe Calculator free?
Sewer Pipe Calculator is free to download, with in-app purchases available.
Is FireSprinkPro free?
FireSprinkPro is free to download, with in-app purchases available.
Do Sewer Pipe Calculator or FireSprinkPro have ads?
Neither Sewer Pipe Calculator nor FireSprinkPro shows ads.
Which is updated more often, Sewer Pipe Calculator or FireSprinkPro?
Sewer Pipe Calculator ships an update every 10 days, and FireSprinkPro weekly. Most recently, Sewer Pipe Calculator was updated on November 5, 2026 and FireSprinkPro on November 10, 2026.

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