# Flow Rate Help vs Pump Power

The clearest difference is update cadence: Flow Rate Help at every 15 months against Pump Power's every 56 months. Flow Rate Help also leads on device support (4 vs 2) and price ($0.99 vs $1.99). On ads and in-app purchases there is nothing between them.

Flow Rate Help costs $0.99 and Pump Power $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Flow Rate Help ships an update every 15 months, Pump Power every 56 months. The most recent releases landed on August 6, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Flow Rate Help | Pump Power |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[4.3 (44 ratings)](https://appshunter.io/ios/app/flow-rate-help/id1009898806/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 56 months |
| Monetization | Paid | — |
| Size | 3 MB | 2 MB |
| Requires iOS | **11.0** | 16.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## What reviewers say

### Flow Rate Help

[App page](https://appshunter.io/ios/app/flow-rate-help/id1009898806)

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.

**Highlights:** Solve flow rate equations, Customizable diameter units, Customizable velocity units, Customizable flow rate units, Set decimal places

**Features:** Vision Pro support

**In-app purchases:** none


### Pump Power

[App page](https://appshunter.io/ios/app/pump-power/id1490692755)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flow Rate Help free?

Flow Rate Help costs $0.99, with no in-app purchases.

### Is Pump Power free?

Pump Power costs $1.99, with no in-app purchases.

### Do Flow Rate Help or Pump Power have ads?

Neither Flow Rate Help nor Pump Power shows ads.

### Which is updated more often, Flow Rate Help or Pump Power?

Flow Rate Help ships an update every 15 months, and Pump Power every 56 months. Most recently, Flow Rate Help was updated on August 6, 2026 and Pump Power on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*