# Flow Rate Help — user reviews

> 3 indexed App Store user reviews of Flow Rate Help by Armchair Engineering, rated 4.30/5 from 44 ratings.

- Source: https://appshunter.io/ios/app/flow-rate-help/id1009898806/reviews
- App overview in markdown: https://appshunter.io/ios/app/flow-rate-help/id1009898806.md
- Rating breakdown: 5★ 29 · 4★ 9 · 3★ 0 · 2★ 2 · 1★ 4

## Most critical reviews (3 lowest-rated)

### 1/5 — Does not compute

*2016-03-01*

Literally off by a factor of 10.  I can't believe I paid for this!!!!!

### 1/5 — Incorrect which kinda defeats the purpose

*2015-09-17*

Water traveling through a 6in pipe at 2.11 feet per second is not 2001gpm

### 2/5 — Used to work great

*2020-06-18*

Not sure what’s going on but I can no longer type into the fields. Nothing shows up.

**Developer response:** Hi Romz000,
Sorry about that, this issue was caused by an oversight on my part in not handling iOS 13's dark mode properly. It should now be fixed.
Thanks for letting me know and kind regards,
David

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-06.*