Comparison

Plumber Invoices & Estimates vs Backflow Pro

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

Head to head
About

Plumber Invoices & Estimates

This app helps plumbing professionals manage their business by creating estimates and invoices, scheduling appointments, and tracking client information. It offers financial analysis, inventory control, and document customization for a streamlined workflow. All data is stored locally on your device.

Highlights
  • Create estimates and invoices
  • Client-focused scheduling
  • Contact management
  • Inventory control
  • Profit & loss analysis
  • Signature capture
  • Document customization
Features
Currently charting
Read full description

IMPORTANT: The Mac App License includes access to standard app features and the ability to add seven invoices. In-App purchase required to add additional invoices. Plumbing Pro is a complete management app for residential & commercial plumbing and mechanical pros. It maintains a client focused schedule of your appointments. Integrated with your client contact info you can quickly create invoices and track your important accounts. Reasonable One-Time Price There are no monthly or annual fees to use your app. Powerful invoicing function is included to create, email and print all types of sales and service invoices. Invoice entry you can visualize the completed invoice as you go. The invoice entry view all of your transactions can be tailored to the unique needs of your business. There is extensive profit & loss analysis. This comprehensive business app provides complete financial information including inventory control and Profit & Loss Info. All information is maintained on your device and there is no need for connectivity or outside servers as is common with many of the more sophisticated business apps. Highlights: Project Pro Create cost plus type estimates and invoices with multiple levels and phases. Use Craftsman and your items with included descriptions and costs. Scheduler - The calendar on steroids. Select client names from your contacts and add the service information to the appointment. Create reminders, complete and invoice the transaction, view contact management info and send confirmations. All right from the appointment. Contact Management - Store notes, images and track other communications with your clients and have the in app ability to call, text, email or map without leaving your app. Labor, Parts & Supplies are maintained in the app with detailed multi-line descriptions, costs, price and units of measure & on hand quantities. These can be added on-the-fly or maintained from your stored items. Invoices are automatically created from your Estimates and support multiple payment methods. Maintain PAID and OPEN status of your invoices. Multiple sales tax rates. Your logo, detailed terms and conditions and other messages are automatically displayed. Document Manager Document Design & Delivery- Change document formats, images, fonts, colors, and field names. Use your local language and terms. Batch deliver Printed & Email docs. Signature Capture of approved Estimates with an update of Status. Financial Information - Is instantly available for any client, job or timeframe with just a few taps. Information may be viewed on screen or downloaded for further analysis with any spreadsheet. Help and Support - Context sensitive help shows by topic as well as how to movies. Email, text and phone support provides to help with any questions or issues. In-App Purchases Estimates Create detailed and professional looking estimates at the client site that may be immediately emailed or printed. Track the status of each Estimate from Draft to Email to Approved. Cloud Sync Automatically synchronize your information utilizing iCloud technology. For up to five devices this In App will keep your business info inSync and available on all your devices! Messages & Reminders Create Appointment Reminders automatically from your schedule using text or email. Profits and Reports Profits provides a complete financial system that tracks all sales, purchases and expenses. Includes ALL formatted PDF Reports that can be printed. + Spreadsheet Download Download your financial info and backup your info. Craftsman Cost Books This is the #1 info source for Construction Labor & Materials Cost Information. With over 15,000 labor and material items the info contained in these saves time required for creating project estimates and eliminates costly pricing errors. Recurring Services Repetitive Services entry and automatic weekly, semiweekly or monthly release for maintenance and other service providers.

About

Backflow Pro

This app digitizes backflow prevention documentation, creating secure, visual records with time-stamped photos and GPS data. It streamlines compliance letters, invoices, and repair tracking for building and facility professionals.

Highlights
  • Digital backflow prevention program creation
  • Time-stamped and GPS-stamped photo embedding
  • Electronic signature capture
  • Automated compliance letters and invoices
  • Cloud syncing across multiple devices
  • Scheduling calendar with push notifications
  • Organized file storage by project and client
Features
Read full description

A powerful, user-friendly app by Time Lock Documentation with embedded backflow testing checklists and compliance letters. This program creates a visual digital backflow documentation record which is attached to common paperwork creating digital visual proof of backflow prevention certification and compliance with governing law. The Backflow PRO provides a mobile and web synced backflow documentation process for all buildings and facilities. The Backflow program has been designed for the building, facility, and maintenance industries, for professional contractors, inspectors, plumbers, states, provinces, cities, counties, water companies, property managers and service technicians. The Backflow PRO documents backflow testing procedures providing testing “passed” and testing “failed” on the building backflow prevention device including a compliance letter, invoice, estimate, change order for any repairs required in the field. This creates a highly effective program for certifying and tracking repaired “backflow assembly devices” on a regular schedule. Backflow prevention device certifications, repairs, work estimates, and invoices are easily scheduled, visually captured, and logged with ease. The Backflow PRO leverages smartphone technology with our patented, time-lock documentation process that includes embedded photos watermarked with time, date, ambient temperature, and GPS location in addition to sorting, storing, and emailing documents and enabling signature capture (E-Sign). The program provides remote E-sign-off from multiple locations and cloud syncing on multiple devices . Features • Creates secure, digital backflow prevention program in minutes (Say goodbye to lost or damaged paperwork). • Reduces labor hours for projects by providing a digital web log and field application. • Backflow inspections, compliance letters, and repairs are easily scheduled, created, digitally captured, and logged with ease. • Embeds photos-stamped with time, date, ambient temp, GPS location. • E-signoff for multiple signatures of inspectors, project managers, etc. • Emails professionally documented, certified PDFs. • Time-locked, encrypted data fields-prevent errors and data tampering. • Organizes and stores files by date, project, system, and client. • Improves accountability-gives clients, water companies, and building owners detailed proof of work. • Designed for field use with no internet or server connections needed. • Cloud storage and synchronizing on multiple devices . • Creates full scheduling calendar with push notifications to field applications. • Certifications can be saved to the PlanGrid documents folder when the application is synchronized. • TLD PRO version, multi-user web dashboard and integrated apps allow teams to sync projects and documents on multiple devices from the field to the office. No ads. $71.99/ month; $80.99/month, $49.99/month, $29.99/month and , $3.99/month are the intended price of your in-app purchase product, Gold_Mechanical, Platinum_Mechanical, and Silver_Mechanical, Bronze_Mechanical and StandAlone_Mechanical. See privacy policy: https://timelockdocs.com/times/site/privacy-policy Terms of use: https://timelockdocs.com/times/site/terms-of-use

Screenshots

Plumber Invoices & Estimates4 screens
Backflow Pro4 screens

Verdict

The call

The clearest difference is price: Backflow Pro at Free against Plumber Invoices & Estimates's $7.99. Backflow Pro also leads on rating (5.0 vs 3.6) and update cadence (every 3 weeks vs every 3 months). Plumber Invoices & Estimates's advantage is ratings volume (12 vs 1) and chart position (#112 vs unranked). On 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

CostPrice · In-app purchases · Ads · Monetization

Backflow Pro is free to download; Plumber Invoices & Estimates costs $7.99 up front. Plumber Invoices & Estimates sells 8 one-off in-app purchases and Backflow Pro sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Backflow Pro holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Plumber Invoices & Estimates has 12 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Plumber Invoices & Estimates ships an update every 3 months, Backflow Pro every 3 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 4 level
Plumber Invoices & Estimates versus Backflow Pro: the parameters behind the verdict, then further details
ParameterPlumber Invoices & EstimatesBackflow Pro
Price$7.99Free — better
Rating3.6 (12 ratings)5.0 (1 ratings) — better
Positive reviews64.3% of reviews—
Number of ratings12 — better1
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#112 — better—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size132 MB22 MB
Age rating4+4+
DeveloperJZ Mobile LLCTime Lock Documentation, LLC

Customer experience

Plumber Invoices & Estimates

All ratings12 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews14 reviews
Positive64.3%
Neutral0.0%
Negative35.7%

Backflow Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

Plumber Invoices & Estimates

One-time8
  • Messages & Reminders$3.99
  • Scheduler$3.99
  • Estimates Bids & Quotes$4.99
Show 5 more
  • Cloud Sync$6.99
  • Profits Expenses & PDF Reports$6.99
  • All Productivity In-Apps$9.99
  • Craftsman Cost Books - NPH$14.99
  • Mac User Full License$19.99
5 purchases

Backflow Pro

Subscriptions5
  • Stand Alone Plan$3.991 Month
  • Bronze Plan$29.991 Month
  • Silver Plan$49.991 Month
Show 2 more
  • Gold Plan$71.991 Month
  • Platinum Plan$80.991 Month

Questions

Is Plumber Invoices & Estimates free?
Plumber Invoices & Estimates costs $7.99, and also offers in-app purchases.
Is Backflow Pro free?
Backflow Pro is free to download, with in-app purchases available.
Which has better reviews, Plumber Invoices & Estimates or Backflow Pro?
Backflow Pro is rated higher. Plumber Invoices & Estimates averages 3.6 out of 5 from 12 ratings, while Backflow Pro averages 5.0 from 1 ratings.
Do Plumber Invoices & Estimates or Backflow Pro have ads?
Neither Plumber Invoices & Estimates nor Backflow Pro shows ads.
Which is updated more often, Plumber Invoices & Estimates or Backflow Pro?
Plumber Invoices & Estimates ships an update every 3 months, and Backflow Pro every 3 weeks. Most recently, Plumber Invoices & Estimates was updated on November 6, 2026 and Backflow Pro on November 3, 2026.

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