Comparison

Backflow Buddy vs Backflow Tester Exam Prep

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

Head to head
About

Backflow Buddy

This app simulates backflow prevention devices and their testing procedures. It offers customizable water pressure simulations and quizzes to prepare users for certification exams.

Highlights
  • RPZ and Test Gauge simulation
  • Double Check and Test Gauge simulation
  • Customizable internal water pressure
  • Differential pressure gauge simulation
  • Quiz preparation with multiple lengths
  • Randomized industry-expert questions
  • Comprehensive quiz results
Features
Currently charting
Read full description

Backflow Buddy was designed to be a teaching tool for instructors and a learning tool for anyone interested in back flow prevention assemblies and how they are tested. Features include: - Simulation of RPZ and Test Gauge - Simulation of Double Check and Test Gauge Imagine seeing what is happening inside a backflow device as water moves through it. The water pressure in different portions of the device is fully customizable, allowing users to simulate a failing check valve or even back siphonage. Simulators include working accurate differential pressure gauges that can be hooked up to the devices. -Quiz Prep Prepare yourself for upcoming exams. With three quiz length options, you can test your self on a variety of backflow subjects. Questions created by industry leaders and educators. Randomized questions with comprehensive results at the end of each quiz, to help see what you're missing.

About

Backflow Tester Exam Prep

Features
Read full description

BACKFLOW TESTER EXAM PREP: PASS YOUR CERTIFICATION. NEVER FAIL A TEST. The only mobile app with a full test procedure simulator for DC, RPZ, PVB, and SVB assemblies. Most candidates fail the practical because they know the theory but freeze on the exact test sequence. Wrong step order means a failed assembly test. This app fixes that. TEST PROCEDURE SIMULATOR Step-by-step walkthrough for every assembly type. Checkbox each sub-step, enter your PSID readings, get instant pass/fail feedback. Common mistakes highlighted at each step. Animated assembly diagrams show hose connections and test c**k positions. Double Check Valve (DC): two-check testing sequence, minimum 1.0 PSID for each check, return to service procedure. Reduced Pressure Zone (RPZ): all five test steps in order, relief valve opening point test, Check 1 minimum 5.0 PSID, relief must open within 2.0 PSID below Check 1. Pressure Vacuum Breaker (PVB): check valve test, air inlet opening point, backsiphonage protection verification. Spill-Resistant Vacuum Breaker (SVB): complete sequence with pass/fail criteria. DIFFERENTIAL PRESSURE CALCULATOR Enter high-side and low-side gauge readings. Instant PSID with automatic pass/fail against all assembly minimums. DC checks need 1.0 PSID. RPZ Check 1 needs 5.0 PSID. Know instantly before moving to the next step. ASSEMBLY PARTS IDENTIFIER Tap any component on the interactive diagram: test c**k locations 1 through 4, check valve positions, relief valve on RPZ, shutoff valve locations, hose connection points. Quiz mode tests parts identification — heavily tested on both written and practical sections. 350+ PRACTICE QUESTIONS TEST PROCEDURES: Step sequences, correct order of operations, what to do when a check fails, when to declare an assembly failed. ASSEMBLY COMPONENTS: Parts by name and function, test c**k numbering, check and relief valve operation. CROSS-CONNECTION THEORY: Backpressure vs backsiphonage, hazard assessment (high vs low hazard), when to specify DC vs RPZ vs PVB vs air gap, cross-connection control program requirements. DIFFERENTIAL PRESSURE: PSID calculations from gauge readings, minimum requirements by assembly type, gauge operation and calibration. REPAIR AND TROUBLESHOOTING: Failed check identification, relief valve replacement, disc and seat inspection, when to condemn an assembly. REGULATIONS: ABPA, AWWA, USC FCCC standards, annual testing requirements, test report completion, permit requirements by jurisdiction. FREE: 5 questions per day, DC simulator demo (first 3 steps), PSID calculator. No account required. MONTHLY ($9.99/month): Full simulator for all 4 assemblies, unlimited questions, all tools, 3-day free trial. ANNUAL ($24.99/year): Save over 75 percent. Best value. LIFETIME ($39.99): One payment. Permanent access. PASS PROMISE: Complete all questions with 80% or higher average, hold active subscription for 3 months, still do not pass. We extend your access by 4 months at no charge. voltexam.com/pass-promise For educational purposes only. Always follow your certifying organization procedures and local water authority regulations. Not affiliated with ABPA, AWWA, USC FCCC, or IAPMO. Privacy Policy: https://www.voltexam.com/privacy Terms of Service: https://www.voltexam.com/terms

Screenshots

Backflow Buddy3 screens
Backflow Tester Exam Prep4 screens

Verdict

The call

The clearest difference is price: Backflow Tester Exam Prep at Free against Backflow Buddy's $1.99. Backflow Tester Exam Prep also leads on ads (none vs shown). Backflow Buddy's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 3 months).

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 Tester Exam Prep is free to download; Backflow Buddy costs $1.99 up front. Backflow Tester Exam Prep sells 3 in-app purchases, starting at $9.99 per month. Backflow Buddy asks for nothing beyond the download.

UpkeepUpdate frequency

Backflow Buddy ships an update fortnightly, Backflow Tester Exam Prep every 3 months. The most recent releases landed on August 27, 2026 and September 20, 2026 respectively.

Scorecard7 real differences · 4 level
Backflow Buddy versus Backflow Tester Exam Prep: the parameters behind the verdict, then further details
ParameterBackflow BuddyBackflow Tester Exam Prep
Price$1.99Free — better
Rating3.7 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyFortnightly — betterEvery 3 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationPaid—
Best chart rank#192 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size258 MB6 MB
Age rating17+4+
DeveloperGreg PhillipsDeeun Inc.

In-app purchases

None

Backflow Buddy

No in-app purchases

3 purchases

Backflow Tester Exam Prep

Subscriptions2
  • Backflow Tester Pro - Monthly3 Days trial$9.991 Month
  • Annual Access$24.991 Year
One-time1
  • Pro - Lifetime Access$39.99

Questions

Is Backflow Buddy free?
Backflow Buddy costs $1.99, with no in-app purchases.
Is Backflow Tester Exam Prep free?
Backflow Tester Exam Prep is free to download, with in-app purchases available.
Do Backflow Buddy or Backflow Tester Exam Prep have ads?
Backflow Buddy shows ads; Backflow Tester Exam Prep does not.
Which is updated more often, Backflow Buddy or Backflow Tester Exam Prep?
Backflow Buddy ships an update fortnightly, and Backflow Tester Exam Prep every 3 months. Most recently, Backflow Buddy was updated on August 27, 2026 and Backflow Tester Exam Prep on September 20, 2026.

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