# ResToolbox2 — Utilities on the go! > Mobile subsurface engineering tools for rapid data analysis and decision-making. (iPhone/iPad app by Mark Burgoyne.) - Source: https://appshunter.io/ios/app/restoolbox2/id1252326018 (this page in markdown: same URL + `.md`) - Developer: [Mark Burgoyne](https://appshunter.io/developer/497057811) - Category: Business, Utilities - Price: Free - Rating: 4.50/5 from 2 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 29 MB - Languages: American English - Released: 2017-06-26 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/restoolbox2/id1252326018/reviews.md ## What is ResToolbox2? A set of subsurface engineering tools with a mobile flavour. Aimed at those engineers in meetings or at the water cooler looking to quickly sanity check information and/or make rapid decisions where the 80:20 rule is sufficient for the purpose. Oil, Gas and Brine property correlations Oil and Gas Nodal Analyses Type Curve creation and aggregation Flowline & Compression correlations Units conversions Volumetrics and more.... ## Key features - Oil, Gas, and Brine property correlations - Oil and Gas Nodal Analyses - Type Curve creation - Flowline & Compression correlations - Units conversions - Volumetrics ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/restoolbox2/id1252326018/reviews.md ### 4/5 — Ant Corrie-Keilig *2019-12-03, version 1.2.3* Mark you are a legend! I can’t tell you how many times I have sat in a meeting, pulled out my IPhone, done a quick calculation...and said guys I’m not sure about this, I’ve just done a quick calculation! ### 5/5 — Great Contribution! *2017-10-25* Thank you for taking the time to make and share this useful tool for petroleum engineers. Great tool, keep it up! ### 5/5 — Amazing *2017-08-17, version 1.1.1* This is great and free! ## Frequently asked questions about ResToolbox2 ### What is ResToolbox2 used for? ResToolbox2 provides a set of subsurface engineering tools designed for quick data sanity checks and rapid decision-making in the oil, gas, and brine industries. It helps engineers analyze properties, perform nodal analyses, and manage volumetric data. ### What specific engineering calculations does ResToolbox2 offer? ResToolbox2 includes correlations for oil, gas, and brine properties, oil and gas nodal analyses, type curve creation and aggregation, flowline and compression correlations, unit conversions, and volumetric calculations. ### Is ResToolbox2 suitable for offline use? The provided information does not specify offline capabilities for ResToolbox2. It is recommended to check the app's store listing for details on offline functionality. ### What devices is ResToolbox2 available on? ResToolbox2 is available on iPhone, iPad, and iPod devices. It is designed for mobile use, allowing engineers to access tools on the go. ### How often is ResToolbox2 updated? The latest version of ResToolbox2 was released on August 22, 2018. Further information on update frequency would require checking the app's current store listing. ### What is the age rating for ResToolbox2? ResToolbox2 has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content. ### Does ResToolbox2 have ads? No, ResToolbox2 does not contain advertisements. As it is a free application without ads, users can expect an uninterrupted experience. ### What is the user sentiment for ResToolbox2 based on ratings? ResToolbox2 has a high user rating of 4.5 stars from 2 ratings, suggesting positive user sentiment. This indicates that users who have reviewed the app generally find it useful and effective. ## Version history (last 5 releases) ### 1.2.3 — 2018-08-22 This app has been updated by Apple to display the Apple Watch app icon. Added P/Z to Pressure solver in Gas PVT module Added methane free brine properties Added Effective NaCl salinity to actual salinity converter (under petrophysics section) Fix for image sizing in PRMS section Added viscosity section to Units conversion module Now permits changing calorific and weight conversion assumptions in the gas rates Units conversion module ### 1.2.2 — 2018-07-17 Added PRMS 2018 definitions and classifications under the Tools menu Added viscosity to the Units conversion module ### 1.2.1 — 2018-06-18 1. Bug fix IPR/VLP intersection logic for very flat outflow curves 2. Enhance conversion module by adding; a. External well radius to the Area section b. Acre Ft to the Volume section c. Ability to see / edit the assumed oil density in the oil rates section d. Ability to see / edit the gas calorific value, and LNG conversion ratios in the gas rates section 3. Add ability to see/edit gas GHV condensate capture and C8+ constants ### 1.2.0 — 2018-06-09 Fix bug in H&B lift curves for oil wells Improved efficiency in gas pseudo pressure integration - now using adaptive quadrature with Simpson's 1/3 rule - faster and more accurate! Minor additional enhancements ### 1.1.9 — 2018-06-04 Work on the gas depletion recovery factor module; - Improved the logic to find Nodal abandon point - Added heterogeneous multilayer simulation option, honouring specified average permeability, split over the layers according to a Lorenz factor (also user defined), truncating simulation on either (a) minimum rate to lift liquids, (b) minimum defined field rate or (c) maximum time period - Added option to email yourself the results from either method, including the VLP table with the Nodal analysis. ## Apps similar to ResToolbox2 | App | Rating | Price | Category | | --- | --- | --- | --- | | [AusIMM](https://appshunter.io/ios/app/ausimm/id1485837608) | 1.0 (1) | Free | Business | | [CorePlan](https://appshunter.io/ios/app/coreplan/id1545742591) | — | Free | Business | | [AEMO Energy Live](https://appshunter.io/ios/app/aemo-energy-live/id1444373303) | — | Free | Business | | [Basic Business Analyzer](https://appshunter.io/ios/app/basic-business-analyzer/id963578958) | — | Free | Business | | [LogScope Mobile](https://appshunter.io/ios/app/logscope-mobile/id1464481955) | 5.0 (1) | Free | Business | | [Journey Management System JMS](https://appshunter.io/ios/app/journey-management-system-jms/id1453345388) | — | Free | Business | ## More apps by Mark Burgoyne - [Santos Convert](https://appshunter.io/ios/app/santos-convert/id1199279224) - [ResToolbox3](https://appshunter.io/ios/app/restoolbox3/id6759464322) All apps by Mark Burgoyne: https://appshunter.io/developer/497057811 --- *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.*