Comparison

Fathom Methanol Bunkering vs SkyWindow

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fathom Methanol Bunkering

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Fathom Methanol Training App Immersive Training for Methanol-Powered Vessels About This App The Fathom Methanol Training App is a purpose-built digital training solution for seafarers joining methanol-powered and methanol-bunkered vessels. Designed for dual-fuel ship operations, the app delivers structured, interactive training covering: Methanol fuel characteristics and hazards Bunkering and fuel handling operations Safety procedures and emergency response Operational best practices aligned with MSC Circ. 1621 (MISC 16) Training is delivered through scenario-based learning, allowing users to experience real onboard situations in a safe, controlled digital environment. Each module concludes with a competency-based assessment, ensuring users not only learn but are ready to operate safely onboard. Key Features Designed specifically for methanol and dual-fuel vessels Interactive, game-based learning for higher engagement Compliance aligned with MSC Circ. 1621 (MISC 16) Knowledge checks and assessments after every module Built for seafarers, officers, and engineering teams Supports measurable training outcomes Why This Matters for Owners and Managers Operating methanol-fuelled vessels introduces new operational, safety, and human-element risks. Traditional classroom training alone is no longer enough. The Fathom Methanol Training App helps owners and managers to: Reduce operational risk by preparing crew before they step onboard Standardise training across fleets and crew nationalities Demonstrate regulatory diligence aligned with MSC guidance and future IGF expectations Improve safety culture through immersive, behaviour-focused learning Minimise incidents, delays, and non-conformities linked to human error Support audit readiness for Flag, Class, Vetting, and SIRE 2.0 inspections Simply put: Better prepared crew means safer operations, stronger compliance, and lower risk exposure. Who Is This App For? Ship Owners and Managers Technical and Marine Superintendents Training Managers and Crewing Departments Seafarers joining methanol-fuelled vessels

About

SkyWindow

Features
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SkyWindow – Smart Planning for Astronomy & Astrophotography Many astronomy and astrophotography enthusiasts do not observe under perfect skies. Buildings, balconies, windows, and trees often limit the visible sky area. SkyWindow was designed exactly for these situations. SkyWindow helps you efficiently plan observations and astrophotography sessions based on your real visible sky window — ideal for smart telescopes and mobile observing setups. Whether you observe from a balcony, garden, rooftop window, or travel location, SkyWindow helps you determine when celestial objects become visible and worth capturing. Features • Tonight Quick access to the best observing opportunities for the current night, including visibility, timing, and sky conditions. • Catalogs Browse supported astronomy catalogs, inspect object details, and jump directly into observation planning. • Comet Hunter Plan observations for comets and asteroids with focus on motion, visibility, and timing. • Sites Manage observing locations such as balconies, gardens, windows, or remote travel sites. • Planner Build structured observation plans based on visibility windows, altitude, azimuth, and timing. • Mosaic Planner Prepare mosaic imaging projects for large deep-sky objects and advanced framing work. • Sky Journey Your personal observing journal with saved sessions, captured targets, favorites, retries, and observing history. Built for Modern Astronomy SkyWindow is designed for modern smart telescopes and efficient observation planning, especially for observers with limited sky visibility. Perfect for: • Smart telescopes • Balcony astronomy • Window observing • Mobile astrophotography • Travel observing • Deep-sky planning Plan smarter. Use your sky window efficiently. Explore the night sky with SkyWindow. SkyWindow is available in English, German, French, Spanish, Japanese, and Simplified Chinese.

Screenshots

Fathom Methanol Bunkering4 screens
SkyWindow4 screens

Verdict

The call

The clearest difference is price: Fathom Methanol Bunkering at Free against SkyWindow's $4.99. Fathom Methanol Bunkering also leads on iOS requirement (15.0 vs 26.2). SkyWindow's advantage is update cadence (every 5 days vs every 2 weeks). On ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Fathom Methanol Bunkering is free to download; SkyWindow costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fathom Methanol Bunkering ships an update every 2 weeks, SkyWindow every 5 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Fathom Methanol Bunkering versus SkyWindow: the parameters behind the verdict, then further details
ParameterFathom Methanol BunkeringSkyWindow
PriceFree — better$4.99
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size871 MB19 MB
Age rating4+4+
DeveloperNipun ChatrathDung Le

In-app purchases

None

Fathom Methanol Bunkering

No in-app purchases

None

SkyWindow

No in-app purchases

Questions

Is Fathom Methanol Bunkering free?
Fathom Methanol Bunkering is free to download, with no in-app purchases.
Is SkyWindow free?
SkyWindow costs $4.99, with no in-app purchases.
Do Fathom Methanol Bunkering or SkyWindow have ads?
Neither Fathom Methanol Bunkering nor SkyWindow shows ads.
Which is updated more often, Fathom Methanol Bunkering or SkyWindow?
Fathom Methanol Bunkering ships an update every 2 weeks, and SkyWindow every 5 days. Most recently, Fathom Methanol Bunkering was updated on October 13, 2026 and SkyWindow on October 1, 2026.

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