CrewPad ETR vs sSL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CrewPad ETR
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CrewPad ETR is a digital assessment and grading solution designed to meet the requirements of Airlines and Aviation Training Organizations (ATOs) worldwide. CrewPad ETR can be effectively used for Aircrew, Cabin Crew and Aviation Maintenance Personnel training and checking. CrewPad ETR iPad App enables you to conduct training and collect training and checking data and completions – Online as well as Offline – and synchronize the data securely.All data can be synchronized to the Pelesys QMS (Qualification Management System) to ensure full compliance. The captured proficiency data can be analyzed with the backend data reporting tools to extract precise statistical evidence to adjust and fine tune your training programs and to achieve instructor standardization. ETR can be used to support traditional training programs as well as AQP/ATQP and EBT training programs. CrewPad ETR enables you to reduce your overall training management costs with a paperless records management process. Features: - Electronic grading and submitting forms and training syllabus content - Full autonomy to manage training/checking forms - Full autonomy over Task Analysis (JTA) - Full autonomy over Grading Scales and other grading criteria - Full autonomy over Competencies and Behavioral Indicators (and SKAs). - Automatic qualification validation according to set rules with support for different regulatory requirements, such as FAA, EASA, CASA, Transport Canada, etc. - Offline and Online use - AQP/ATQP/EBT and conventional grading - fully integrated into Pelesys TMDS (Training Management Delivery System) - Integration to 3rd party Crew Management systems with the ETR backend integration module to update qualifications - Data delivery to the local Civil Aviation Authority (CAA) and other stakeholders with ETR backend workflow manager - Remedial training content generation and notification services in case of failed or incomplete checks or training sessions - Collection of performance and proficiency data, which can then be accessed with the ETR backend reporting tools to support training program adjustments (AQP/ATQP/EBT as well as conventional training programs).
sSL
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Sync Library is a professional macOS utility designed to extract, organize, and access aviation operational data from supported gateways in a clean, reliable, and platform-native way. Built for modern documentation and performance workflows, Sync Library gives you direct ownership of your data, without locking it into a proprietary viewer or format. Supported gateways • FSA Gateway • Blink Gateway What you can extract • Operational manuals • XML • PDF • Performance and loadsheet data • Zipped data sets, preserved as delivered Key features • Direct links to extracted files for immediate opening in Finder or your preferred applications • Secure gateway connections, with optional certificate verification control • Clear and structured file output for easy indexing, search, and reuse • Optimized for desktop workflows on macOS, with the same data model shared across iOS and iPadOS • No dependency on a built-in reader: use Spotlight, external PDF tools, XML parsers, or your own workflows Designed for professionals Sync Library fits naturally into environments where documentation and performance data need to be accessed offline, archived, searched, or processed by external tools. It focuses on reliability, transparency, and interoperability rather than presentation. Whether you need to consult manuals, analyze XML content, or reuse performance data in third-party software, Sync Library keeps your extracted files accessible and under your control.
Screenshots
Verdict
The clearest difference is price: CrewPad ETR at Free against sSL's $2.99. CrewPad ETR also leads on update cadence (monthly vs every 2 months) and iOS requirement (14.0 vs 18.0). sSL's advantage is device support (3 vs 1). On ads and in-app purchases 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
CrewPad ETR is free to download; sSL costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CrewPad ETR ships an update monthly, sSL every 2 months. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.
| Parameter | CrewPad ETR | sSL |
|---|---|---|
| Price | Free — better | $2.99 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPad | iPhone, iPad, Mac — better |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 99 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | CrewPad One | Philippe Le Gall |
In-app purchases
CrewPad ETR
No in-app purchases
sSL
No in-app purchases








