Stroboscopic Effect vs DroneGuru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stroboscopic Effect
Explore the fascinating stroboscopic effect by rotating various objects. Observe how objects can appear to stop or move backward at specific speeds. This app allows you to manipulate rotation direction and speed to witness these optical illusions.
- Rotate 4 different objects
- Adjust rotation speed
- Change rotation direction
- Observe stroboscopic effect
- Supports iPad, iPhone, and Retina display
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Did you ever notice the wheels on the car driving next to you sometimes appear to be spinning backwards? This is referred to as the stroboscopic (or wagon-wheel) effect. It occurs when an object is rotated at certain speeds, making the object to appear to stop or even go backwards. Rotate 4 different objects in either direction (clockwise or counterclockwise). You can increase the speed until you see it appear to stop or reverse. On one of the objects, a wheel with different colored alternating rings, you can make it appear as if the rings of this single option are turning in opposite directions. Universal App - supports native iPad, iPhone and iPhone 4's Retina display. WARNING - Those with Epilepsy or those subject to seizures are usually cautioned to avoid strobe lights or similar effects.
DroneGuru
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Get ready for the A1/A3 and A2 drone certificate exams. With DroneGuru, you can train on the drone rules exactly as they appear on the A1/A3 and A2 exams – and keep your knowledge sharp afterwards. DroneGuru includes 400+ questions based on the official EU/EASA preparation material. During the practice exams, you get direct links to the relevant preparation material.
Screenshots
Verdict
The clearest difference is price: Stroboscopic Effect at Free against DroneGuru's $9.99. Stroboscopic Effect also leads on iOS requirement (8.0 vs 16.6). DroneGuru's advantage is update cadence (fortnightly vs every 84 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
Stroboscopic Effect is free to download; DroneGuru costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stroboscopic Effect ships an update every 84 months, DroneGuru fortnightly. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.
| Parameter | Stroboscopic Effect | DroneGuru |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 2.7 (18 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 18 — better | — |
| Update frequency | Every 84 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 3 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Magnin & Associates | Anders Peter Amsnaes |
In-app purchases
Stroboscopic Effect
No in-app purchases
DroneGuru
No in-app purchases
Questions
Is Stroboscopic Effect free?
Is DroneGuru free?
Do Stroboscopic Effect or DroneGuru have ads?
Which is updated more often, Stroboscopic Effect or DroneGuru?
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