# Petroleum Dictionary vs DeallSoft

The clearest difference is in-app purchases: DeallSoft at none against Petroleum Dictionary's 5. DeallSoft also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Petroleum Dictionary sells 5 in-app purchases, starting at $1.99 per 7 days. DeallSoft asks for nothing beyond the download.

## The numbers

| Metric | Petroleum Dictionary | DeallSoft |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/petroleum-dictionary-offline/id1487805808/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 34 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Puju Dekivadiya](https://appshunter.io/developer/1289574712) | [Anton Naidenov](https://appshunter.io/developer/1892830787) |

## What reviewers say

### Petroleum Dictionary

[App page](https://appshunter.io/ios/app/petroleum-dictionary-offline/id1487805808)

This app provides a comprehensive offline dictionary for petroleum engineering terms, including definitions, equations, formulas, and quizzes. It offers features like speech-to-text, text-to-speech, and the ability to save favorites and view search history. It's designed for students and professionals in the oil and gas industry.

**Highlights:** Offline access to over 5000 petroleum terms, Includes engineering equations and formulas, Interactive quizzes to test knowledge, Speech-to-text and text-to-speech functionality, Save favorite terms and view search history, Easy-to-use interface

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro Plan | $1.99 | per 7 days |
| Monthly Pro Plan | $4.99 | per month |
| Yearly Pro Plan | $29.99 | per year |
| Remove Ads | $9.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### DeallSoft

[App page](https://appshunter.io/ios/app/deallsoft/id6793684019)

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

**In-app purchases:** none


## Frequently asked questions

### Is Petroleum Dictionary free?

Petroleum Dictionary is free to download, with in-app purchases available.

### Is DeallSoft free?

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

### Do Petroleum Dictionary or DeallSoft have ads?

Petroleum Dictionary shows ads; DeallSoft does not.

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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.*