Comparison

Gpsvcs 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

Gpsvcs

This app allows users to view and pay for parking infractions by entering their license plate. Upon payment, a release code and instructions are provided within the app. Funds are processed through a third-party merchant.

Highlights
  • View parking infractions
  • Pay infractions online
  • License plate lookup
  • Receive release codes
  • Payment processing
Read full description

The customer will enter their license plate and will be able to view and pay for their infraction. Once payment is received a one time release code will be sent on the app along with directions on how the process works. Funds will be deposited into a business account, through a third party merchant.

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

Gpsvcs4 screens
Backflow Pro4 screens

Verdict

The call

The clearest difference is rating: Backflow Pro at 5.0 against Gpsvcs's 3.9. Gpsvcs's advantage is in-app purchases (none vs 5) and ratings volume (7 vs 1). On price, update cadence, ads 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. Backflow Pro sells 5 in-app purchases, starting at $3.99 per month. Gpsvcs asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Backflow Pro holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Gpsvcs has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Gpsvcs ships an update fortnightly, Backflow Pro every 3 weeks. The most recent releases landed on June 4, 2026 and June 1, 2026 respectively.

Scorecard4 real differences · 5 level
Gpsvcs versus Backflow Pro: the parameters behind the verdict, then further details
ParameterGpsvcsBackflow Pro
PriceFreeFree
Rating3.9 (7 ratings)5.0 (1 ratings) — better
Number of ratings7 — better1
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.6
Further details — not scored
Size56 MB22 MB
Age rating4+4+
DeveloperDark SkyTime Lock Documentation, LLC

Customer experience

Gpsvcs

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%

Backflow Pro

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

In-app purchases

None

Gpsvcs

No in-app purchases

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 Gpsvcs free?
Gpsvcs is free to download, with no in-app purchases.
Is Backflow Pro free?
Backflow Pro is free to download, with in-app purchases available.
Which has better reviews, Gpsvcs or Backflow Pro?
Backflow Pro is rated higher. Gpsvcs averages 3.9 out of 5 from 7 ratings, while Backflow Pro averages 5.0 from 1 ratings.
Do Gpsvcs or Backflow Pro have ads?
Neither Gpsvcs nor Backflow Pro shows ads.
Which is updated more often, Gpsvcs or Backflow Pro?
Gpsvcs ships an update fortnightly, and Backflow Pro every 3 weeks. Most recently, Gpsvcs was updated on June 4, 2026 and Backflow Pro on June 1, 2026.

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