Strobe Groove Flashlight vs Signal Light
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Strobe Groove Flashlight
This utility app transforms your phone's LED into a dynamic light source. It synchronizes flashing with music beats and offers manual strobe control. It also functions as a standard flashlight and can send Morse code.
- Music synchronization for light flashing
- Manual strobe control
- Everyday flashlight function
- Morse code transmission
- Customizable flashing parameters
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◆ Flash your phone’s LED light freely—just a light tap to control the strobe! ◆ Even after you stop tapping, the light will automatically flash in sync with your music! Tweak the parameters to your heart’s content! ◆ Flashing along to the beat in front of a mirror is surprisingly fun. You’ll want to dance in the dark! ◆ Perfect for parties and events, too! ◆ Also works as an adorable everyday flashlight app! ◆ In the age of 5G, why not send Morse code at 5 bps? ◆ You won’t be able to resist downloading it now!
Signal Light
Communicate with others using Morse code via your device's flash. This tool is useful for signaling in various situations, from camping to emergencies, and can also function as a manual strobe light.
- Morse code communication
- Manual strobe light
- SOS signaling
- Line-of-sight tool
- Flashlight spotlight
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Note: Your device must have a flash to use this app! Camper, Sailor, Soldier, Spy A handy tool for campers, scouts, boaters (and yes, spies)! Use it to communicate with distant friends using Morse code, tap out a beat for a human-powered strobe light, or get the attention of rescuers. This app is based on the old mechanical “signal lamp” which is a manually-controled shuttered spotlight used on warships to communicate securely while maintaining radio silence. Modern navies still use signal lamps, but now use infrared wavelengths and night vision goggles! Extra fun: Put a paper towel tube on the flash to make a tight spotlight and you’ve got a line-of-sight communication tool that only you and your partner can see. p.s. SOS is . . . – – – . . .
Screenshots
Verdict
The clearest difference is review sentiment: Strobe Groove Flashlight at 100% against Signal Light's 0%. Strobe Groove Flashlight also leads on price (Free vs $0.99) and rating (5.0 vs 4.0). Signal Light's advantage is iOS requirement (12.0 vs 16.6). On ratings volume, 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
Strobe Groove Flashlight is free to download; Signal Light costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Strobe Groove Flashlight holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 100% of Strobe Groove Flashlight's written reviews are positive against 0% of Signal Light's.
Strobe Groove Flashlight ships an update every 2 months, Signal Light every 25 months. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.
| Parameter | Strobe Groove Flashlight | Signal Light |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months — better | Every 25 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Kunihiko Nakahara | Bryan Wu |
Customer experience
Strobe Groove Flashlight
Signal Light
In-app purchases
Strobe Groove Flashlight
No in-app purchases
Signal Light
No in-app purchases
Questions
Is Strobe Groove Flashlight free?
Is Signal Light free?
Which has better reviews, Strobe Groove Flashlight or Signal Light?
Do Strobe Groove Flashlight or Signal Light have ads?
Which is updated more often, Strobe Groove Flashlight or Signal Light?
Other comparisons
