Comparison

Engine Calculator Plus vs STIHL connected

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

Head to head
About

Engine Calculator Plus

Calculate engine specifications for various car and plane engines, including displacement, compression ratio, and horsepower. Supports metric and imperial systems with a user-friendly interface and 3D engine visualization.

Highlights
  • Engine displacement calculation
  • Compression ratio calculation
  • Horsepower estimation
  • Metric and Imperial support
  • 3D engine display
  • Copyable results
Features
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Engine Calculator Plus is designed to help you figure out engine specs for all car or plane engine types from inline 4 to V12 Engine. This calculator provides calculations for engine displacement based on either the metric or US standard system. Features: - User friendly UI - Engine type selection from single cylinder to complex W16 or even custom cylinder count. - Display 3D engine from selection - Metric or Imperial input - Output Engine Displacement on cc, liter and cubic inch - Output Compression ratio of engine - Calculate estimate horse power in HP and Kilowatts - Include formula to calculate the engine displacement in help page - Result are copy-able to other app The engine's static compression ratio is easily calculated if you know six measurements or volumes: Bore - The diameter of the cylinder bore Stroke - The distance the piston travels in the cylinder Deck Height - The distance between the top of the cylinder bore and the top of the piston, when the piston is at TDC (Top Dead Center, or at its highest position) Piston top volume - If the piston is dished, domed, or dimpled, that has an affect on compression ratio. Combustion chamber volume - How much open space is in the head above the cylinder Compression ratios: Higher compression ratios cylinder produces better power and fuel economy. It is not just because the charge is squeezed harder and the resulting combustion pressure goes up, but also because the higher expansion ratio allows more energy to be extracted from the original high-pressure. High compression ratio engines burn both much more cleanly and much more efficiently than lower-compression engines. However a lower compression motor will let you run cheap fuel, but your motor won't be as efficient, less efficient and less power. *Thanks for your support, stay tune for more update to come.

About

STIHL connected

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YOUR FLEET. ALWAYS IN CONTROL.  Built for professionals, STIHL connected empowers fleet managers, supervisors, and workshop teams with instant device overview, fast equipment tracking, smart maintenance, and full multi-brand support — so every professional can focus on what really matters: getting the job done.   FLEET OVERVIEW - ANYTIME See your entire fleet in one clear overview. Track status, health, and availability so your crew always knows what’s available for the next job.    FIND ANY EQUIPMENT IN SECONDS Locate equipment instantly using “last seen” data and map-based tracking. Reduce search time and keep every shift running smoothly.    PREVENT DOWNTIME Get timely maintenance reminders based on runtime data or individual preferences. Stay ahead of service needs and avoid costly interruptions.    VIEW EQUIPMENT DATA Access usage hours, condition, and performance metrics for equipment and batteries. Make data-driven decisions and optimize utilization across your fleet.    ALL MANUFACTURERS IN ONE SYSTEM Manage STIHL and non-STIHL equipment together in one unified digital experience. Easily add third-party tools and maintain consistent workflows across your entire fleet.    REPLACE PAPERWORK
 Move from manual documentation to seamless, real‑time workflows. Access all relevant fleet data instantly — anytime, anywhere.     MORE POWER IN THE WEB-BASED PORTAL  To unlock the full potential of the solution and access advanced features, we recommend using the STIHL connected Portal. It serves as the central control layer for advanced analytics, role management, and administrative fleet operations.    POWERED BY STIHL HARDWARE  • Smart Connectors capture usage and location data via Bluetooth — across brands.  • STIHL connected Box automatically collects and uploads equipment data to the cloud.  • Smart batteries provide charging status, state of health, usage, and location data via Bluetooth    REQUIREMENTS  A STIHL connected account, Smart Connectors as retrofit or within connected batteries, and optionally the STIHL connected Box for automated data transfer.    WHY PROFESSIONALS CHOOSE STIHL CONNECTED  • Fast equipment location  • Cloud-based fleet overview  • Smart maintenance planning  • Accurate runtime data  • Multi-brand compatibility

Screenshots

Engine Calculator Plus4 screens
STIHL connected4 screens

Verdict

The call

The clearest difference is price: STIHL connected at Free against Engine Calculator Plus's $2.99. STIHL connected also leads on update cadence (monthly vs every 48 months). Engine Calculator Plus's advantage is device support (3 vs 1) and iOS requirement (13 vs 16.6). 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

CostPrice · In-app purchases · Ads · Monetization

STIHL connected is free to download; Engine Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Engine Calculator Plus ships an update every 48 months, STIHL connected monthly. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
Engine Calculator Plus versus STIHL connected: the parameters behind the verdict, then further details
ParameterEngine Calculator PlusSTIHL connected
Price$2.99Free — better
Rating4.0 (1 ratings) — better—
Positive reviews12.5% of reviews—
Number of ratings1 — better—
Update frequencyEvery 48 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13 — better16.6
Further details — not scored
Size2 MB105 MB
Age rating4+4+
DeveloperNitrioSTIHL Inc.

In-app purchases

None

Engine Calculator Plus

No in-app purchases

None

STIHL connected

No in-app purchases

Questions

Is Engine Calculator Plus free?
Engine Calculator Plus costs $2.99, with no in-app purchases.
Is STIHL connected free?
STIHL connected is free to download, with no in-app purchases.
Do Engine Calculator Plus or STIHL connected have ads?
Neither Engine Calculator Plus nor STIHL connected shows ads.
Which is updated more often, Engine Calculator Plus or STIHL connected?
Engine Calculator Plus ships an update every 48 months, and STIHL connected monthly. Most recently, Engine Calculator Plus was updated on October 15, 2026 and STIHL connected on October 8, 2026.

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