# Centrifugal Pump Spec vs Flow Conversions

The clearest difference is price: Flow Conversions at Free against Centrifugal Pump Spec's $5.99. Flow Conversions also leads on update cadence (every 8 days vs every 11 months) and iOS requirement (10.3 vs 14.3). On ads, in-app purchases and device support there is nothing between them.

Flow Conversions is free to download; Centrifugal Pump Spec costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Centrifugal Pump Spec ships an update every 11 months, Flow Conversions every 8 days. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Centrifugal Pump Spec | Flow Conversions |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flow-conversions/id1276206364/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 8 days** |
| Monetization | — | Free |
| Size | 1 MB | 12 MB |
| Requires iOS | 14.3 | **10.3** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Jeff Evans](https://appshunter.io/developer/1155207587) |

## What reviewers say

### Centrifugal Pump Spec

[App page](https://appshunter.io/ios/app/centrifugal-pump-spec/id482488028)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flow Conversions

[App page](https://appshunter.io/ios/app/flow-conversions/id1276206364)

Easily convert water flow rates between various units of measurement. This utility app provides a straightforward way to calculate and understand different flow rate values.

**Highlights:** Calculate flow rate, Multiple units of measure, Water flow conversions, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Centrifugal Pump Spec free?

Centrifugal Pump Spec costs $5.99, with no in-app purchases.

### Is Flow Conversions free?

Flow Conversions is free to download, with no in-app purchases.

### Do Centrifugal Pump Spec or Flow Conversions have ads?

Neither Centrifugal Pump Spec nor Flow Conversions shows ads.

### Which is updated more often, Centrifugal Pump Spec or Flow Conversions?

Centrifugal Pump Spec ships an update every 11 months, and Flow Conversions every 8 days. Most recently, Centrifugal Pump Spec was updated on October 6, 2026 and Flow Conversions on October 16, 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.*