# PetroFrac vs Multi Search Engine

The clearest difference is device support: Multi Search Engine at 4 against PetroFrac's 2. Multi Search Engine also leads on price ($0.99 vs $1.99). PetroFrac's advantage is ratings volume (3 vs 1). On rating, review sentiment, update cadence and ads there is nothing between them.

PetroFrac costs $1.99 and Multi Search Engine $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for PetroFrac against 5.0 for Multi Search Engine. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

PetroFrac ships an update every 13 months, Multi Search Engine every 7 months. The most recent releases landed on October 5, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | PetroFrac | Multi Search Engine |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/petrofrac/id954888337/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/multi-search-engine/id1672855306/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 7 months** |
| Monetization | Paid | Paid |
| Size | 3 MB | 2 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Richard H Street](https://appshunter.io/developer/954888336) | [伟胜 林](https://appshunter.io/developer/1107947419) |

## What reviewers say

### PetroFrac

[App page](https://appshunter.io/ios/app/petrofrac/id954888337)

This utility app calculates key properties of refinery petroleum fractions using D86 distillation and API gravity data. It provides specific gravity, molecular weight, density, viscosity, heat capacity, and enthalpy. Extrapolated values are clearly indicated.

**Highlights:** Calculate specific gravity, Calculate Watson K, Calculate molecular weight, Calculate density at flow temperature, Calculate viscosity at flow temperature, Calculate heat capacity, Calculate enthalpy

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

**In-app purchases:** none


### Multi Search Engine

[App page](https://appshunter.io/ios/app/multi-search-engine/id1672855306)

Enhance your browsing with a powerful search tool that integrates with Safari. Switch between multiple search engines instantly from your address bar to find information faster. This utility is available for iOS, iPadOS, and macOS.

**Highlights:** Switch between search engines, Integrates with Safari, Fast search functionality, Supports iOS, iPadOS, and macOS, Single purchase for full features

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PetroFrac free?

PetroFrac costs $1.99, with no in-app purchases.

### Is Multi Search Engine free?

Multi Search Engine costs $0.99, with no in-app purchases.

### Which has better reviews, PetroFrac or Multi Search Engine?

PetroFrac and Multi Search Engine are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do PetroFrac or Multi Search Engine have ads?

Neither PetroFrac nor Multi Search Engine shows ads.

### Which is updated more often, PetroFrac or Multi Search Engine?

PetroFrac ships an update every 13 months, and Multi Search Engine every 7 months. Most recently, PetroFrac was updated on October 5, 2026 and Multi Search Engine on October 23, 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.*