Flow Rate Help vs Imperial Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flow Rate Help
Calculate liquid flow rate, pipe diameter, or velocity with ease. Customize units for diameter, velocity, and flow rate, and set your preferred decimal places for precise results.
- Solve flow rate equations
- Customizable diameter units
- Customizable velocity units
- Customizable flow rate units
- Set decimal places
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Quickly find flow rate, required pipe diameter or velocity of a liquid! Features Include: - Accurately solve flow rate equations - Set preferred diameter unit from: mm, cm, m, km, inches, feet, yards and miles - Set preferred velocity unit from: m/s, m/min, km/min, km/h, ft/s, ft/min, mi/min and mph - Set preferred flow rate unit from: m³/s, m³/min, m³/h, l/s, l/min, l/h, gps. gpm and gph - Select your preferred number of decimal places
Imperial Converter
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This app converts imperial and metric units quickly and clearly. Length and weight are calculated instantly as you type, without switching screens or modes. Supports miles, kilometers, feet, inches, yards, kilograms, pounds, ounces, stones and tons. Interface is simple, offline, and available in multiple languages including Chinese (Traditional).
Screenshots
Verdict
The clearest difference is update cadence: Imperial Converter at every 2 days against Flow Rate Help's every 15 months. Flow Rate Help's advantage is device support (4 vs 2) and iOS requirement (11.0 vs 17.6). On price, 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
Flow Rate Help costs $0.99 and Imperial Converter $1.00 up front. Neither carries in-app purchases, so what you see is what you pay.
Flow Rate Help ships an update every 15 months, Imperial Converter every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | Flow Rate Help | Imperial Converter |
|---|---|---|
| Price | $0.99 — better | $1.00 |
| Rating | 4.3 (44 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 44 — better | — |
| Update frequency | Every 15 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Aleksandr Skorniakov |
In-app purchases
Flow Rate Help
No in-app purchases
Imperial Converter
No in-app purchases
Questions
Is Flow Rate Help free?
Is Imperial Converter free?
Do Flow Rate Help or Imperial Converter have ads?
Which is updated more often, Flow Rate Help or Imperial Converter?
Other comparisons
