Comparison

U vs Backflow Buddy

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

Head to head
About

U

Features
Read full description

We are excited to welcome you to the University of Michigan’s Department of Surgery. The UM SurgEd Recruitment app offers easy to access information and recourses about your interview day. We understand that this time of year is stressful and often confusing. We want to help make your day as smooth and stress-free as possible. Download this app to help you navigate around Ann Arbor and your interview experience, access resources, and learn more about our programs. We are excited to meet you! Go Blue! Lineup: · Get the latest details and updates on your interview day. · Live updates will keep you on top of any last minute changes. Map: · Michigan Medicine Hospital Maps · Michigan Medicine Campus Map · Ann Arbor Map

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
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.

Screenshots

U4 screens
Backflow Buddy3 screens

Verdict

The call

The clearest difference is price: U at Free against Backflow Buddy's $1.99. U also leads on ads (none vs shown). Backflow Buddy's advantage is update cadence (fortnightly vs every 10 months) and iOS requirement (12.0 vs 14.5). On 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

U is free to download; Backflow Buddy costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

U ships an update every 10 months, Backflow Buddy fortnightly. The most recent releases landed on November 9, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 level
U versus Backflow Buddy: the parameters behind the verdict, then further details
ParameterUBackflow Buddy
PriceFree — better$1.99
Rating—3.7 (3 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 10 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.512.0 — better
Further details — not scored
Size47 MB258 MB
Age rating4+17+
DeveloperThe University of MichiganGreg Phillips

In-app purchases

None

U

No in-app purchases

None

Backflow Buddy

No in-app purchases

Questions

Is U free?
U is free to download, with no in-app purchases.
Is Backflow Buddy free?
Backflow Buddy costs $1.99, with no in-app purchases.
Do U or Backflow Buddy have ads?
Backflow Buddy shows ads; U does not.
Which is updated more often, U or Backflow Buddy?
U ships an update every 10 months, and Backflow Buddy fortnightly. Most recently, U was updated on November 9, 2026 and Backflow Buddy on November 8, 2026.

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