Comparison

Plumbing Formulator vs Plumbers Tech App

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

Head to head
About

Plumbing Formulator

This professional calculator app provides over 200 formulas, calculators, and reference materials for plumbers, HVAC technicians, and mechanical contractors. It covers a wide range of calculations for water flow, piping, drainage, water heaters, pumps, and more, all in one pocket-sized tool.

Highlights
  • Over 200 formulas and calculators
  • Water flow and supply calculations
  • Pipe and piping calculations
  • Drainage and venting calculations
  • Water heater and pump calculations
  • Reference charts and code books
  • Pipe cut list optimizer
Features
Read full description

PLUMBING FORMULATOR is the ultimate professional calculator for plumbers, HVAC techs, and mechanical contractors. Over 200 formulas, reference charts, code books, and pro tools in your pocket. CALCULATORS AND FORMULAS Water Flow and Supply: pipe velocity, flow rate, GPM, fixture unit demand, and supply sizing. Pipes and Piping: area, volume, and weight for copper, steel, cast iron, and plastic. Hazen-Williams friction loss, pressure ratings, and 45 degree offsets. Drainage and Venting: drain sizing, slope and fall, vent sizing, fixture units, and wet vents. Water Heaters: BTU requirements, recovery rates, tank sizing, first hour ratings, and hot water demand. Pumps and Pressure: water and brake horsepower, efficiency, head pressure, velocity head, and PSI to feet of head. Storm Drainage: roof drains, rainfall intensity, gutter and leader sizing, and retention. Gas Piping: size natural gas and propane lines, BTU loads, pressure drop, and appliance demand. Medical Gas: size oxygen, nitrogen, nitrous oxide, and medical air. Vacuum demand and manifolds per NFPA 99. Swimming Pools: volume, fill time, pump sizing, turnover, evaporation loss, and main drains. Septic and Sewage: septic tanks, leach fields, and sewage pump capacity. Thermal Expansion: expansion tank sizing, system pressure, and pipe length changes. REFERENCE MATERIALS Charts and Tables: dozens of reference charts including pipe sizing, fixture units, and materials in PDF. Massachusetts Plumbing Code: complete 248 CMR reference with all chapters. Plumbing Design Guide: a 24 chapter design and installation guide. Technical Drawings: professional diagrams and installation details. TOOLS AND FEATURES Pipe Cut List Optimizer: enter lengths and stock sizes for an optimized cutting plan that cuts waste. Unit Conversions: length, area, volume, flow, pressure, temperature, weight, and power. Geometry Calculators: area and volume for circles, rectangles, triangles, cylinders, spheres, cones, and more. BUSINESS MANAGEMENT More than a calculator. Tap Business to run your service company from the same app. Customers: contacts, service addresses, job history, and outstanding balances. More than a calculator. Tap Business to run your service company from the same app. Customers: contacts, service addresses, job history, and outstanding balances. Quotes and Estimates: build quotes on site and turn an approved quote into an invoice with one tap. Invoicing: branded invoices with your logo, parts and labor, taxes, and terms. Send by email, print, or PDF. Payments: cash, check, card, ACH, or credit. Apply one payment across invoices and manage credit automatically. Scheduling: book service calls, track jobs, and set up recurring contracts that auto-generate invoices. Business Reports: balances, receivable aging, revenue, and payment history. Export as CSV or PDF. Business features are a separate one-time upgrade, discounted for existing Bill-Craft and ServiceBoss customers. PLUMBING PRO FEATURES Upgrade to Plumbing Pro to save calculations with full detail, export results, keep unlimited history, and remove ads. One time purchase with lifetime access. A modern dark interface built for the job site, with breakdowns showing the steps and formulas behind every result. Perfect for plumbers, apprentices, HVAC techs, mechanical engineers, and building inspectors. Download Plumbing Formulator today and put professional plumbing calculations at your fingertips.

About

Plumbers Tech App

Track individual technician performance and revenue streams for HVAC and plumbing services. Set monthly and annual goals, monitor daily progress in real-time, and generate reports on service call types and job sales. Helps identify revenue sources and optimize follow-up efforts.

Highlights
  • Technician performance tracking
  • Revenue stream analysis
  • Real-time goal monitoring
  • Service call type reporting
  • Job type sales tracking
  • Commission tracking
  • Customer data for marketing
Features
Read full description

The Plumbers Tech App is an HVAC and plumbing service technician performance tracker. The app allows individual technicians to be set-up with their individual performance goals set up monthly with an annual total. The app allows the technician to see in real time what his/her daily goal is for the day, month, and year. After each service transaction is recorded from the technician’s phone it updates how much of the goal is remaining for the day, month, and year in real time. As the customer transaction is entered by the technician a data base is populated with information that identifies where the revenue stream came from. Service call types can be defined by your company, but standard types are pre-loaded. These types include demand service call, service agreement, tune-up, warranty, call back, and IAQ. The data base then creates a report that identifies these revenue streams by technician and what percentage of your business comes from these revenue streams. Reporting also shows total revenue by technician and the average ticket for each service call type. Job types are used to track equipment sales by each technician. Job type categories can also be defined by your company, but pre-loaded job types include: A/C and Coil, Complete A/C System with Furnace, Furnace, Heat Pump, Air Handler, Water Heater, Geo Thermal, Boiler, and Tankless Water Heater. The app tracks closing rates, average job type ticket amount, equipment age, brand, and type in the data base. Quoted but not closed job types appear in a report daily so follow-up calls can be made for a last chance effort to close the sale. The data base includes customer address information to send promotional and marketing collateral to solicit sales opportunities. Real time commission tracking is available allowing the technician and manager to track commissions instantly. If you are wanting to track where your service revenues are coming from and individual technician performance, then Plumbers tech app meets those needs.

Screenshots

Plumbing Formulator4 screens
Plumbers Tech App4 screens

Verdict

The call

The clearest difference is review sentiment: Plumbers Tech App at 100% against Plumbing Formulator's 9%. Plumbers Tech App also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.6). Plumbing Formulator's advantage is update cadence (every 2 months vs every 30 months) and ratings volume (7 vs 2). On price, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Plumbing Formulator sells 4 one-off in-app purchases. Plumbers Tech App asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Plumbers Tech App holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 9% of Plumbing Formulator's written reviews are positive against 100% of Plumbers Tech App's.

UpkeepUpdate frequency

Plumbing Formulator ships an update every 2 months, Plumbers Tech App every 30 months. The most recent releases landed on August 23, 2026 and September 14, 2026 respectively.

Scorecard6 real differences · 4 level
Plumbing Formulator versus Plumbers Tech App: the parameters behind the verdict, then further details
ParameterPlumbing FormulatorPlumbers Tech App
PriceFreeFree
Rating4.6 (7 ratings)5.0 (2 ratings) — better
Positive reviews9.1% of reviews100.0% of reviews — better
Number of ratings7 — better2
Update frequencyEvery 2 months — betterEvery 30 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.69.0 — better
Further details — not scored
Size123 MB217 MB
Age rating4+4+
DeveloperHistorycentral.comPlumbers Supply Co

Customer experience

Plumbing Formulator

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews11 reviews
Positive9.1%
Neutral0.0%
Negative90.9%

Plumbers Tech App

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Plumbing Formulator

One-time4
  • Pro Version$1.99
  • Pro Purchase$3.99
  • Starter$5.99
Show 1 more
  • Growth$9.99
None

Plumbers Tech App

No in-app purchases

Questions

Is Plumbing Formulator free?
Plumbing Formulator is free to download, with in-app purchases available.
Is Plumbers Tech App free?
Plumbers Tech App is free to download, with no in-app purchases.
Which has better reviews, Plumbing Formulator or Plumbers Tech App?
Plumbers Tech App is rated higher. Plumbing Formulator averages 4.6 out of 5 from 7 ratings, while Plumbers Tech App averages 5.0 from 2 ratings.
Do Plumbing Formulator or Plumbers Tech App have ads?
Neither Plumbing Formulator nor Plumbers Tech App shows ads.
Which is updated more often, Plumbing Formulator or Plumbers Tech App?
Plumbing Formulator ships an update every 2 months, and Plumbers Tech App every 30 months. Most recently, Plumbing Formulator was updated on August 23, 2026 and Plumbers Tech App on September 14, 2026.

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