# SmarTech > Digital manifold app for HVAC pressure, temperature, and system charge calculations. (iPhone/iPad app by Uniweld Products, Inc..) - Source: https://appshunter.io/ios/app/smartech/id1071783318 (this page in markdown: same URL + `.md`) - Developer: [Uniweld Products, Inc.](https://appshunter.io/developer/1097526384) - Category: Productivity, Business - Price: Free - Rating: 3.56/5 from 9 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 21 MB - Languages: English, Spanish - Released: 2016-03-28 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/smartech/id1071783318/reviews.md ## What is SmarTech? The Uniweld SmarTech™ Digital Manifold App communicates with your SmarTech™ Digital Manifold to clearly display professionally accurate pressure and temperature readings in the palm of your hand. Monitor target and actual Superheat and Subcooling calculations in real-time, as pressure and temperature readings fluctuate. Choose from over 109 different refrigerant types and create a custom list of your most commonly used refrigerants. SMART CHARGE ZONE: All the guess work is taken out of properly charging the system with the color coded Smart Charge Zone feature. The difference between the target and actual Superheat or Subcooling is shown with color indicators that signal whether the system is overcharged (RED), undercharged (BLUE), or has an accurate "In The Zone" system charge (GREEN). REPORTING: Take your business to the next level with system performance reporting. Enter company details along with customer and equipment information and with one touch, produce a SmarTech™ Verified System Performance Report that is ready for export as a PDF or CSV file. Reports can easily be emailed for saving, tracking, or printing. Uniweld Products, Inc... "Quality Tools That Go To Work With You®". This app also works as a free, stand-alone P/T Calculator! ## Key features - Real-time pressure and temperature readings - Superheat and Subcooling calculations - 109+ refrigerant types supported - Smart Charge Zone indicator - System performance reporting - PDF/CSV report export ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/smartech/id1071783318/reviews.md ### 3/5 — Need update *2025-05-18* 454 b need to add Please update from the new refrigerant ### 2/5 — Need R454 *2025-02-20* Need R454 Freon upgrade ### 1/5 — Does not work on IPhone 10s *2020-02-13* Email does not work and it crashes. ### 5/5 — Great app *2016-04-20* This is a great app. ## Frequently asked questions about SmarTech ### What is SmarTech? SmarTech is a digital manifold app that connects to compatible devices to display HVAC system pressure and temperature readings. It also provides real-time calculations for Superheat and Subcooling, and can generate system performance reports. ### What refrigerants does SmarTech support? SmarTech supports over 109 different refrigerant types. Users can also create a custom list of their most frequently used refrigerants for quick access. ### How does the Smart Charge Zone feature work in SmarTech? The Smart Charge Zone uses color indicators to show if a system is overcharged (RED), undercharged (BLUE), or has an accurate charge (GREEN) based on the difference between target and actual Superheat or Subcooling. ### Can I export reports from SmarTech? Yes, SmarTech allows you to generate a "SmarTech™ Verified System Performance Report" which can be exported as a PDF or CSV file. These reports can then be emailed for saving, tracking, or printing. ### Does SmarTech work offline? The app description does not specify offline functionality. However, it does mention that it can work as a free, stand-alone P/T Calculator, which may imply some offline capability for that specific feature. ### What devices is SmarTech compatible with? SmarTech is compatible with iPhone, iPad, and iPod devices. It requires iOS 4.3 or later. ### How often is SmarTech updated? The latest version is 1.3.5, which was last updated on July 8, 2025. This indicates a recent update, though the frequency of updates prior to this is not detailed. ### What is the age rating for SmarTech? SmarTech has an age rating of 4+, making it suitable for a wide range of users. The app is free to download and use. ## Version history (last 5 releases) ### 1.3.5 — 2025-07-08 • Added support for new refrigerants in the system • Resolved UI issues on the Home screen and improved background compatibility with Dark Mode • Fixed layout alignment and improved visual consistency • Minor bug fixes and performance optimizations ### 1.3.3 — 2018-05-10 This app has been updated by Apple to display the Apple Watch app icon. Added R-453A and R-458A to the list of refrigerants. ### 1.3.2 — 2018-03-08 Bug Fixes. Added R-448A and R-449A to the list of refrigerants. ### 1.2 — 2016-08-25 Bug Fixes. Technical Instruction Fixes. ### 1.0 — 2016-03-27 No release notes. ## Apps similar to SmarTech | App | Rating | Price | Category | | --- | --- | --- | --- | | [BluVac](https://appshunter.io/ios/app/bluvac/id1227222428) | 5.0 (2) | Free | Productivity | | [FG Finder](https://appshunter.io/ios/app/fg-finder/id945015876) | 5.0 (4) | Free | Productivity | | [Baker HVAC Pro+](https://appshunter.io/ios/app/baker-hvac-pro-plus/id511192312) | 4.9 (570) | Free | Productivity | | [HVAC PT Chart](https://appshunter.io/ios/app/hvac-pt-chart/id508212589) | 4.0 (8) | Free | Productivity | | [YJACK VIEW](https://appshunter.io/ios/app/yjack-view/id1492358956) | 2.8 (18) | Free | Productivity | | [measureQuick HVAC](https://appshunter.io/ios/app/measurequick-hvac/id1273187731) | 5.0 (5) | Free | Productivity | ## Related topics [yjack view](https://appshunter.io/ios/topics/yjack-view) · [prothermal](https://appshunter.io/ios/topics/prothermal) --- *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 2026-06-01.*