MachXDrone vs Engine Displacement Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MachXDrone
Control a toy drone with your smartphone. View real-time camera feeds in normal or VR mode, and capture photos and videos directly within the app's album.
- Remote drone operation
- Real-time camera streaming
- Normal and VR viewing modes
- Photo and video capture
- In-app media album
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The TOY DRONE is operated by a remote control. The app window displays the pictures returned by the camera picture on the toy DRONE. The real-time streaming pictures are divided into normal mode and VR mode.Users can take photos and videos and view them in the app's built-in album.
Engine Displacement Calc
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Need to know the exact displacement of an engine build before ordering parts? Whether you are verifying a crate motor, sizing a swap, or checking class compliance, this app calculates total engine displacement from bore, stroke, and cylinder count in seconds. Supports metric (mm) and imperial (inches). Shows total volume in cc, liters, and cubic inches. Includes bore/stroke ratio analysis with square, oversquare, and undersquare classification. FEATURES: - Enter bore diameter, stroke length, and number of cylinders - Instant per-cylinder and total displacement - Output in cc, liters, and cubic inches simultaneously - Bore/stroke ratio with automatic classification - Metric and imperial unit toggle - Works completely offline Perfect for engine builders, mechanics, race teams, and automotive enthusiasts who need accurate displacement figures on the spot.
Screenshots
Verdict
The clearest difference is price: MachXDrone at Free against Engine Displacement Calc's $4.99. MachXDrone also leads on iOS requirement (12.0 vs 17.0). Engine Displacement Calc's advantage is update cadence (every 6 weeks vs every 5 months). On 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
MachXDrone is free to download; Engine Displacement Calc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MachXDrone ships an update every 5 months, Engine Displacement Calc every 6 weeks. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.
| Parameter | MachXDrone | Engine Displacement Calc |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 2.9 (36 ratings) — better | — |
| Positive reviews | 15.4% of reviews | — |
| Number of ratings | 36 — better | — |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Yilushi Technology Co.,ltd | Shanghai Sheyuan Network Technology Co., Ltd. |
In-app purchases
MachXDrone
No in-app purchases
Engine Displacement Calc
No in-app purchases
Questions
Is MachXDrone free?
Is Engine Displacement Calc free?
Do MachXDrone or Engine Displacement Calc have ads?
Which is updated more often, MachXDrone or Engine Displacement Calc?
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