# BITZER REFRIGERANT RULER vs Salaah Time

The clearest difference is in-app purchases: BITZER REFRIGERANT RULER at none against Salaah Time's 1. BITZER REFRIGERANT RULER also leads on ratings volume (1.1K vs 91) and review sentiment (64% vs 50%). Salaah Time's advantage is update cadence (every 2 months vs every 4 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Salaah Time sells 1 one-off in-app purchase. BITZER REFRIGERANT RULER asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for BITZER REFRIGERANT RULER against 4.7 for Salaah Time. That said, the two scores are not equally well evidenced: BITZER REFRIGERANT RULER has 1.1K ratings behind it against 91, so its average is the more settled of the two. Written reviews are what separate them: 64% of BITZER REFRIGERANT RULER's written reviews are positive against 50% of Salaah Time's.

BITZER REFRIGERANT RULER ships an update every 4 months, Salaah Time every 2 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | BITZER REFRIGERANT RULER | Salaah Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792/reviews) | **[4.7 (91 ratings)](https://appshunter.io/ios/app/salaah-time/id1379045620/reviews)** |
| Number of ratings | **1.1K** | 91 |
| Positive reviews | **63.6% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 21 MB | 15 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BITZER SE](https://appshunter.io/developer/1224090796) | [Muhammad Akif](https://appshunter.io/developer/1209959130) |

## What reviewers say

### BITZER REFRIGERANT RULER

[App page](https://appshunter.io/ios/app/bitzer-refrigerant-ruler/id373683792)

This tool quickly determines refrigerant data, including properties, safety groups, GWP, and ODP. It offers intuitive temperature-to-pressure conversion and supports both metric and imperial units. Access detailed information and links to online resources for over 100 refrigerants.

**Highlights:** Refrigerant data lookup, Temperature-to-pressure conversion, Metric and imperial unit support, Over 100 refrigerants, Oil type information, GWP and ODP data, Search filters and favorites

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Comprehensive refrigerant list
- 🚀 Efficient and easy to use
- 💡 Helpful for HVAC students and professionals

**What reviewers complain about**

- 🐛 Accuracy issues with some refrigerants
- 🔧 Confusing layout and navigation after recent update
- 🔋 Crashes or freezes on some devices

**Reported bugs**

- Incorrect pressure-temperature relationships
- Inconsistent units (PSIA vs PSIG)

**Requested features**

- Altitude adjustment option
- Ability to filter or hide unwanted refrigerants
- Addition of more refrigerant trade names


### Salaah Time

[App page](https://appshunter.io/ios/app/salaah-time/id1379045620)

This application provides accurate Muslim prayer timings, displaying daily prayer schedules alongside Gregorian and Islamic dates. It includes a compass for Qibla direction and offers a monthly calendar as an in-app purchase for detailed prayer schedules.

**Highlights:** Accurate prayer timings, Gregorian and Islamic date display, Qibla direction compass, Monthly prayer calendar (IAP), Customizable prayer time adjustments, Multiple calculation methods

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prayer times calendar | Free | one-time |


## Frequently asked questions

### Is BITZER REFRIGERANT RULER free?

BITZER REFRIGERANT RULER is free to download, with no in-app purchases.

### Is Salaah Time free?

Salaah Time is free to download, with in-app purchases available.

### Which has better reviews, BITZER REFRIGERANT RULER or Salaah Time?

Salaah Time is rated higher. BITZER REFRIGERANT RULER averages 4.6 out of 5 from 1.1K ratings, while Salaah Time averages 4.7 from 91 ratings.

### Do BITZER REFRIGERANT RULER or Salaah Time have ads?

Neither BITZER REFRIGERANT RULER nor Salaah Time shows ads.

### Which is updated more often, BITZER REFRIGERANT RULER or Salaah Time?

BITZER REFRIGERANT RULER ships an update every 4 months, and Salaah Time every 2 months. Most recently, BITZER REFRIGERANT RULER was updated on November 6, 2026 and Salaah Time on November 2, 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.*