OS1 vs Pegasus Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OS1
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Inspection Software Simplified With OS1 Mobile, gain insight to the cleaning of your property. Inspections are completed and sent to you immediately. You can create, track and update work tickets from any device that has Internet access. And with OS1Assure, know when high-traffic area have been cleaned using QR technology. We've eliminated the need for paper logs that never get filled in - anyone with a smart phone can view last cleanings
Pegasus Mobile
This platform enhances communication between construction field teams and the office. It automates tasks, provides real-time job site data, and offers offline capabilities for reporting. Designed for ease of use, it supports teams with minimal tech experience.
- Real-time job site data
- Automated contract administration
- Offline reporting capability
- Branded field report templates
- Photo & video attachments
- Time, material, and equipment tracking
- On-demand customer support
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Pegasus is a construction management and field reporting platform designed for streamlining communication between the field and office on construction projects. Streamline communication with real-time job site data available to your entire project network in real-time. Improve communication, mitigate risk, and substantiate project decision making with construction data that works for you by automating contract administration and project management tasks. Get your team up and running with Pegasus instantly! Our intuitive, easy-to-use platform was designed for construction field personnel first - users with minimal technology experience will have no problem adopting Pegasus from Day 1. Our world class customer success team offers unlimited, on-demand, and personalized training for your team at no additional cost. DAILY CONSTRUCTION REPORTING Capture more construction data in less time with our construction form templates. + Branded Field Report Templates + Over 15 Specialized Construction Report Templates + Photo & Video attachments + Detailed Audit Trail + Easily search & query field data + Weather, Personnel & Equipment time tracking, Daily Log, Material Log, Signatures OFFLINE CAPABILITY No internet? No problem. Work offline and sync with the Pegasus cloud when reconnected. + Offline construction field reporting + Never lose data + Automatically sync when connected REAL-TIME NOTIFICATIONS Measure and improve productivity. + Time Tracking (Time Cards, Time Clock, Kiosk) + Production Tracking + Material Tracking + Equipment Management + Labor Management + Certifications Reporting WHY PEGASUS? Learn why we’re the most intuitive and loved construction management app: + All-in-one app for field and office collaboration + Unlimited, on-demand onboarding & customer support + Simplified project communication + Data-driven decisions + Historical project record available for claims & disputes + Instant deployment for your team See how Pegasus can help your business improve productivity and profitability with a free trial!
Screenshots
Verdict
The clearest difference is update cadence: Pegasus Mobile at every 2 months against OS1's every 8 months. OS1's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OS1 ships an update every 8 months, Pegasus Mobile every 2 months. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.
| Parameter | OS1 | Pegasus Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 62 MB | 144 MB |
| Age rating | 4+ | 17+ |
| Developer | Pegasus Building Services Company, Inc | Morf Corporation |
In-app purchases
OS1
No in-app purchases
Pegasus Mobile
No in-app purchases









