Comparison

Dr VB800 vs Pipe Diameter Calculators

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

Head to head
About

Dr VB800

Features
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This APP works with Tecom VB-800 Smart Wireless Vibration Temperature Sensor which is installed on rotating machine. User can read the real-time operation information (three-axis RMS vibration of velocity & acceleration, the FFT of velocity & acceleration, raw data, single point temperature), Health Index and Maintenance Schedule Suggestion of the machine through this APP. The information can also be uploaded to the remote management platform to perform functions such as storage, trend comparison, diagnostic analysis and report output. It provides predictive maintenance and be prepared for the worst.

About

Pipe Diameter Calculators

Features
Read full description

Size a pipe from the numbers you already have. Pipe Diameter Calculator finds the internal diameter of a circular pipe from your flow rate and target flow velocity, or checks the velocity in a pipe whose internal diameter you already know. Built for quick line sizing on site, at the desk or in class, it suits piping, mechanical and process engineers, plumbing and HVAC professionals, pipefitters and engineering students. TWO WAYS TO CALCULATE โ€ข Find the internal diameter: enter the flow rate, fluid density and target velocity โ€ข Check flow velocity: enter a known internal diameter and the flow rate VOLUME OR MASS FLOW โ€ข Start from a volume flow rate or a mass (weight) flow rate โ€ข Choose your inputs and the value to solve for on the Selection screen CLEAR RESULTS โ€ข Cross-sectional area of the pipe โ€ข Weight (mass) flow rate โ€ข Flow velocity โ€ข Internal pipe diameter METRIC AND IMPERIAL UNITS โ€ข Pick a unit for each input and each result from its own menu โ€ข Mix units freely, for example enter the diameter in centimeters and read the velocity in feet per second SIMPLE AND PRIVATE โ€ข One clean screen, a Calculate button and a one-tap clear button โ€ข Free to download โ€ข No data collected HOW IT HELPS DAY TO DAY โ€ข Pick a starting pipe size for a new line before you check it against your design standard โ€ข Check whether the velocity in an existing pipe is reasonable for the duty โ€ข Work through flow and velocity exercises for coursework and exams Results are a quick engineering estimate based on the values you enter. Always confirm final pipe sizes against the codes, standards and design criteria that apply to your project. Download Pipe Diameter Calculator and size your next line in seconds. In-app purchase Details: Lifetime Access for ads free version Privacy Policy : https://visionaso.in/manager/privacypolicy.html Terms of use : https://visionaso.in/manager/termscondition.html

Screenshots

Dr VB8004 screens
Pipe Diameter Calculators4 screens

Verdict

The call

The clearest difference is in-app purchases: Dr VB800 at none against Pipe Diameter Calculators's 1. Dr VB800 also leads on update cadence (every 5 weeks vs every 20 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Pipe Diameter Calculators sells 1 one-off in-app purchase. Dr VB800 asks for nothing beyond the download.

UpkeepUpdate frequency

Dr VB800 ships an update every 5 weeks, Pipe Diameter Calculators every 20 months. Both last shipped on October 25, 2026.

Scorecard3 real differences ยท 3 level
Dr VB800 versus Pipe Diameter Calculators: the parameters behind the verdict, then further details
ParameterDr VB800Pipe Diameter Calculators
PriceFreeFree
Update frequencyEvery 5 weeks โ€” betterEvery 20 months
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS12.0 โ€” better15.6
Further details โ€” not scored
Size41 MB59 MB
Age rating4+4+
DeveloperTECOM CO., LTD.Ashvin Kevadiya

In-app purchases

None

Dr VB800

No in-app purchases

1 purchases

Pipe Diameter Calculators

One-time1
  • Lifetime$9.99

Questions

Is Dr VB800 free?
Dr VB800 is free to download, with no in-app purchases.
Is Pipe Diameter Calculators free?
Pipe Diameter Calculators is free to download, with in-app purchases available.
Do Dr VB800 or Pipe Diameter Calculators have ads?
Neither Dr VB800 nor Pipe Diameter Calculators shows ads.
Which is updated more often, Dr VB800 or Pipe Diameter Calculators?
Dr VB800 ships an update every 5 weeks, and Pipe Diameter Calculators every 20 months. Most recently, Dr VB800 was updated on October 25, 2026 and Pipe Diameter Calculators on October 25, 2026.

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