# SIS®-Short Interval Scheduling > Construction scheduling and progress tracking tool for field personnel. (iPhone/iPad app by MCA® Inc..) - Source: https://appshunter.io/ios/app/sis-short-interval-scheduling/id984779220 (this page in markdown: same URL + `.md`) - Developer: [MCA® Inc.](https://appshunter.io/developer/984779219) - Category: Business, Productivity - Price: Free - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 12.0 · 15 MB - Languages: American English - Released: 2015-04-21 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/sis-short-interval-scheduling/id984779220/reviews.md ## What is SIS®? The Construction job site is so fluid that unpredictable obstacles occur almost every day. To stay prepared for these obstacles, look-ahead schedules become increasingly important for field personnel. Using SIS® (Short Internal Scheduling) can make our scheduling more effective than ever by giving us the ability to respond to the work obstacles in a more visible manner. As a companion for the SIS® 4.0 web application, the SIS® App allows personnel to schedule and score their work directly from their iPhone or iPad in the form of a 3-day look-ahead. When personnel score their schedule, they record their daily work in the form of: Percent Completion - This is a measure of how much of the work as originally scheduled was actually completed. Reason Code - Obstacles that kept them from completing their scheduled work. Hours not worked as scheduled (HNWAS) - The impact of the obstacles in measured in time. Additional reason code descriptions, notes, and even images can also be added. The SIS® App synchronizes your data with the SIS® 4.0 database so that your job-site information is always up to date and allows you to resolves conflicts with a single touch. ## Key features - 3-day look-ahead scheduling - Schedule scoring - Percent completion tracking - Reason code logging for obstacles - Hours not worked tracking - Image and notes addition - Data synchronization with web app ## Frequently asked questions about SIS® ### What is SIS®-Short Interval Scheduling used for? SIS®-Short Interval Scheduling is used by construction personnel to create and score 3-day look-ahead schedules. It helps in tracking daily work progress, identifying obstacles, and measuring their impact on scheduled work. ### How does SIS®-Short Interval Scheduling help with job site obstacles? The app allows users to record reason codes for any obstacles encountered that prevent scheduled work completion. It also tracks the hours not worked as scheduled due to these obstacles, providing visibility into delays. ### Does SIS®-Short Interval Scheduling sync with other applications? Yes, the SIS® App synchronizes your data with the SIS® 4.0 web application. This ensures that your job-site information is always up to date and allows for conflict resolution with a single touch. ### What information can be recorded for each day's work? For each day's work, users can record the percent completion of scheduled tasks, reason codes for any obstacles, and the hours not worked as scheduled due to those obstacles. Additional notes and images can also be attached. ### What devices is SIS®-Short Interval Scheduling available on? SIS®-Short Interval Scheduling is available for iPhone, iPad, and iPod. It is designed for mobile use directly on the construction job site. ### How often is SIS®-Short Interval Scheduling updated? The latest version of SIS®-Short Interval Scheduling is 1.3.1, which was last updated on August 23, 2022. This indicates a history of maintenance and potential improvements. ### Is SIS®-Short Interval Scheduling free to use? Yes, SIS®-Short Interval Scheduling is available for free. There are no costs associated with downloading or using the core features of the application. ### Does SIS®-Short Interval Scheduling have ads? No, SIS®-Short Interval Scheduling does not contain advertisements. Users can expect an uninterrupted experience while managing their schedules. ## Version history (last 5 releases) ### 1.3.1 — 2022-08-23 - Stability improvements - Speed improvements - Adds ability to download jobs individually instead of all at once ### 1.3.0 — 2020-02-21 Merge remote-tracking branch 'origin/develop' ### 1.2.7 — 2019-07-03 Bug fixes and improvements, syncing improvements ### 1.2.6 — 2017-07-31 Improved schedule synchronization ### 1.2.5 — 2017-06-02 Syncing performance improvements ## More apps by MCA® Inc. - [JPAC® - % Complete Entry](https://appshunter.io/ios/app/jpac-complete-entry/id1059055066) All apps by MCA® Inc.: https://appshunter.io/developer/984779219 --- *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.*