Comparison

NavalToolbox vs ENGINE SFC

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

Head to head

NavalToolbox

Naval architecture in the hand

SFC

About

NavalToolbox

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Take too much time to do your technological watch by going on several websites? Do not want to write the Froude formula several times per day? A lapse in memory to convert units? Navaltoolbox gather the solution to all theses issues in an application available on every devices (web and mobile). You will find in this toolbox: - News from many websites and the possibility to add your own RSS feed; - Your reading list*, because we have not always time to read the articles when we open the app; - A page to convert useful units in naval architecture; - The main dimensions calculation (Fn, Re, roll period,…) for a vessel from its characteristics; - A calculator for quick and simple calculations without leaving the application; - The Beaufort and Douglas scales; - A glossary English-French; - A calculation form for standard profil in structure; - Other functions to come… * Need to create a free account to sync your reading list between all your devices. =========================== You have questions or suggestions, the easiest way is to send us an email (antoine@navaltoolbox.com) or let us a comment on the AppStore.

About

ENGINE SFC

Features

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CALCULATION OF MARINE ENGINE FUEL CONSUMPTION

Screenshots

NavalToolbox4 screens

ENGINE SFC1 screens

Verdict

The call

The clearest difference is update cadence: ENGINE SFC at daily against NavalToolbox's every 6 weeks. NavalToolbox's advantage is iOS requirement (10.0 vs 15.2). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NavalToolbox ships an update every 6 weeks, ENGINE SFC daily. The most recent releases landed on May 17, 2026 and September 11, 2026 respectively.

Scorecard2 real differences · 4 level

NavalToolbox versus ENGINE SFC: the parameters behind the verdict, then further details
Parameter	NavalToolbox	ENGINE SFC
Price	Free	Free
Update frequency	Every 6 weeks	Daily — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	10.0 — better	15.2
Further details — not scored
Size	83 MB	6 MB
Age rating	4+	4+
Developer	Antoine Anceau	Oleksii Nezhalskyi

In-app purchases

None

NavalToolbox

No in-app purchases

None

ENGINE SFC

No in-app purchases

Questions

Is NavalToolbox free?

NavalToolbox is free to download, with no in-app purchases.

Is ENGINE SFC free?

ENGINE SFC is free to download, with no in-app purchases.

Do NavalToolbox or ENGINE SFC have ads?

Neither NavalToolbox nor ENGINE SFC shows ads.

Which is updated more often, NavalToolbox or ENGINE SFC?

NavalToolbox ships an update every 6 weeks, and ENGINE SFC daily. Most recently, NavalToolbox was updated on May 17, 2026 and ENGINE SFC on September 11, 2026.