Watt vs Pipe Sizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Watt
Easily calculate wattage using three different formulas. Input values and get instant results, with options to copy or email your calculations. Features an intuitive design for a smooth and reliable user experience.
- Calculate watt from 3 formulas
- Copy and paste results
- Send results via email
- Formulas always visible
- Intuitive graphics
- Ease of use
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Finally a way much faster to calculate watt from 3 different formulas. Just open Watt, and choose the most suitable formula between the 3 and type the values that compose it. This is all. The App will calculate the result immediately. You can copy the solution or send it by email. With an intuitive design this application provides a pleasant experience and reliability in its use. [ Features ] • Calculate watt from 3 different formula • Copy and paste the result • Send the result by email • Formulas always visible to never forget • Graphics intuitive • Ease of use [ Support ] If you like the app, don’t forget to leave us a review on the App Store. For suggestions please contact us at info@lionsapp.com, or visit lionsapp.com.
Pipe Sizer
This utility app assists in selecting appropriate pipe diameters for water systems, supporting both pressure and gravity flow calculations. It offers automatic recommendations based on user-defined limits and incorporates multiple pipe materials and unit systems.
- Pressure pipe sizing
- Gravity pipe sizing
- Automatic pipe size recommendations
- Multiple pipe material support
- SI and Imperial units
- Hazen-Williams and Manning equations
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PipeSizer helps you quickly choose the right pipe diameter for water systems — for both pressure and gravity flow. PRESSURE PIPE SIZING • Size pipes from a target flow rate. • Set your maximum friction rate and velocity limits. • Calculations based on the Hazen-Williams equation. GRAVITY PIPE SIZING • Size pipes from a target flow rate. • Evaluate flow capacity and velocity under gravity conditions. • Calculations based on the Manning equation. KEY FEATURES • Automatic recommended pipe size based on your limits. • Multiple pipe materials with built-in coefficients (more added over time). • Works in both SI and Imperial (I-P) units. • Designed for engineers, plumbers, and irrigation/drainage design workflows. Feedback is welcome — it directly shapes upcoming updates.
Screenshots
Verdict
The clearest difference is rating: Pipe Sizer at 5.0 against Watt's 4.7. Pipe Sizer also leads on chart position (#194 vs unranked) and price ($0.99 vs $1.99). On ratings volume, update cadence, ads and in-app purchases 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
Watt costs $1.99 and Pipe Sizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pipe Sizer holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
Watt ships an update every 18 months, Pipe Sizer every 27 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | Watt | Pipe Sizer |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 4.7 (3 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 18 months — better | Every 27 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #194 — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | LionsApp di Nallbati Elton | Wassim Murr |
Customer experience
Watt
Pipe Sizer
In-app purchases
Watt
No in-app purchases
Pipe Sizer
No in-app purchases
Questions
Is Watt free?
Is Pipe Sizer free?
Which has better reviews, Watt or Pipe Sizer?
Do Watt or Pipe Sizer have ads?
Which is updated more often, Watt or Pipe Sizer?
Other comparisons
