Gpsvcs vs Backflow Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- View parking infractions
- Pay infractions online
- License plate lookup
- Receive release codes
- Payment processing
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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.
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.
- 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
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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
Verdict
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
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.
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.
Gpsvcs ships an update fortnightly, Backflow Pro every 3 weeks. The most recent releases landed on June 4, 2026 and June 1, 2026 respectively.
| Parameter | Gpsvcs | Backflow Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (7 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 56 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Dark Sky | Time Lock Documentation, LLC |
Customer experience
Gpsvcs
Backflow Pro
In-app purchases
Gpsvcs
No in-app purchases
Backflow Pro
- Stand Alone Plan$3.991 Month
- Bronze Plan$29.991 Month
- Silver Plan$49.991 Month
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- Gold Plan$71.991 Month
- Platinum Plan$80.991 Month









