# Fire Alarm Systems Backup Power Calculations Guide — user reviews

> 5 indexed App Store user reviews of Fire Alarm Systems Backup Power Calculations Guide by Yuhsiu Lai, rated 3.00/5 from 1 ratings.

- Source: https://appshunter.io/ios/app/fire-alarm-systems-backup-power-calculations-guide/id1048234032/reviews
- App overview in markdown: https://appshunter.io/ios/app/fire-alarm-systems-backup-power-calculations-guide/id1048234032.md
- Rating breakdown: 5★ 0 · 4★ 0 · 3★ 1 · 2★ 0 · 1★ 0

## Most critical reviews (5 lowest-rated)

### 1/5 — Waste of money

*2021-10-28, version 2*

Doesn’t work. Was hoping for a document showing calculations

### 1/5 — Fire battery checker

*2021-09-09, version 2*

On the iPhone 11 just does nothing so if anyone reads this review I would like a refund.

### 1/5 — Fire alarm engineer

*2021-02-17, version 2*

Don’t buy this it does not work

### 1/5 — Does not workout

*2019-03-13, version 2*

Does not work out sums correctly do not buy

### 1/5 — just simply doesn’t work at all.

*2019-02-22, version 2*

Using the latest iPhone X Max and this app just does not populate the milliamperes section when we click add.

---

*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 2026-06-10.*