# PERF Charge and Gun Selector App > Select Schlumberger perforating charges and guns for optimal reservoir productivity. (iPhone/iPad app by Schlumberger Technology Corporation.) - Source: https://appshunter.io/ios/app/perf-charge-and-gun-selector-app/id1076540526 (this page in markdown: same URL + `.md`) - Developer: [Schlumberger Technology Corporation](https://appshunter.io/developer/380098290) - Category: Business - Price: Free - Rating: 5.00/5 from 7 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 37 MB - Languages: English - Released: 2016-01-28 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/perf-charge-and-gun-selector-app/id1076540526/reviews.md ## What is PERF Charge and Gun Selector App? Maximize reservoir productivity using the PERF charge and gun selector app, which enables you to conveniently identify the best Schlumberger perforating solution for your environment. Browse the Charge Catalog based on environment and gun size. Or use the advanced Charge-Gun Selector to identify a solution—based on your specific operating parameters—that will provide the best penetration potential. For more information, click the Contact Us button to reach a Schlumberger perforating expert in your region. You can also browse our case studies for real-world examples of how our technology has delivered success. Results provided within this app are for informational purposes only. Actual results may vary. Penetration estimates are based on API RP 19B, Section 1 and Section 2, and API RP 43. ## Key features - Identify best Schlumberger perforating solution - Browse Charge Catalog by environment and gun size - Advanced Charge-Gun Selector - Maximize penetration potential - Contact perforating experts - Browse case studies ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/perf-charge-and-gun-selector-app/id1076540526/reviews.md ### 5/5 — Great App, simple and Powerful *2016-02-09, version 1.0* It is difficult to make a gun selection with so many options available, many times choice is heavily influenced by tradition or what has been normally done in this field. This app helps challenge that perception and provide quantitative feedback as to what would a different option do in this field. ### 5/5 — Great App! *2016-02-07, version 1.0* Love this app. Whoever made it is a genius. Very easy to use and informative. ### 5/5 — Really great app! *2016-02-04, version 1.0* Very lean, very quick, clear outputs to make a choice ### 5/5 — Great perf selection tool *2016-02-02, version 1.0* A very good and easy to use app. Makes it very simple to find and select a charge as well as an easy way to get in contact with the provider. Great job on this. ### 5/5 — Oilfield Engineer *2016-02-02, version 1.0* Very well put together app. Intuitive, fast, and filled with current info on the various perforating systems and explosives. ### 5/5 — Really useful app *2016-02-02, version 1.0* This a great way to look up shape charges. The app is easy to use and the catalog is very extensive. ## Frequently asked questions about PERF Charge and Gun Selector App ### What is the PERF Charge and Gun Selector App? The PERF Charge and Gun Selector App helps users identify the best Schlumberger perforating solution for their specific environment and operating parameters to maximize reservoir productivity. ### How does the Charge Catalog work in the PERF Charge and Gun Selector App? The Charge Catalog allows users to browse available charges based on environmental factors and gun size, helping them find suitable options. ### Can I get personalized help with the PERF Charge and Gun Selector App? Yes, you can use the 'Contact Us' button to reach a Schlumberger perforating expert in your region for more information and assistance. ### What is the basis for the penetration estimates in the PERF Charge and Gun Selector App? Penetration estimates provided within the app are based on API RP 19B, Section 1 and Section 2, and API RP 43. ### Is the PERF Charge and Gun Selector App available on Android devices? The app is currently supported on iPhone and iPad devices, as indicated by its compatibility with 'iphone', 'ipad', and 'ipod'. ### How often is the PERF Charge and Gun Selector App updated? The app was last updated on January 28, 2016, with version 1.0. There have been no subsequent updates listed. ### What is the age rating for the PERF Charge and Gun Selector App? The PERF Charge and Gun Selector App has an age rating of 4+, making it suitable for a wide range of users. ### Does the PERF Charge and Gun Selector App offer real-world examples? Yes, the app allows users to browse case studies that showcase real-world examples of how Schlumberger's technology has delivered success. ## Version history (last 1 release) ### 1.0 — 2016-01-28 This app has been updated by Apple to display the Apple Watch app icon. ## Apps similar to PERF Charge and Gun Selector App | App | Rating | Price | Category | | --- | --- | --- | --- | | [MiCar Driver](https://appshunter.io/ios/app/micar-driver/id1580559660) | — | Free | Business | | [DG1 Management](https://appshunter.io/ios/app/dg1-management/id1580537700) | — | Free | Business | | [DEXIS Hub](https://appshunter.io/ios/app/dexis-hub/id1584308040) | — | Free | Business | | [Infovisa Client Conference](https://appshunter.io/ios/app/infovisa-client-conference/id1580812080) | — | Free | Business | | [Trade Free](https://appshunter.io/ios/app/trade-free/id1582525640) | — | Free | Business | | [Beauty We](https://appshunter.io/ios/app/beauty-we/id1587144200) | — | Free | Business | ## More apps by Schlumberger Technology Corporation - [Quick Calc Hydraulics](https://appshunter.io/ios/app/quick-calc-hydraulics/id404002035) - [DrillAR](https://appshunter.io/ios/app/drillar/id820710413) - [BlueHaul](https://appshunter.io/ios/app/bluehaul/id1149004526) - [Schlumberger Events](https://appshunter.io/ios/app/schlumberger-events/id1192675083) - [Dyna-Drill Power Sections](https://appshunter.io/ios/app/dyna-drill-power-sections/id1312988826) All apps by Schlumberger Technology Corporation: https://appshunter.io/developer/380098290 --- *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.*