FlashLight LED HD vs LED Resistor Calculator Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlashLight LED HD
This utility app provides the brightest and most powerful light source available using your device's integrated LED flash. It offers instant illumination with a single button press and can also utilize your full screen as a light source. Enjoy adjustable brightness and blinking speeds.
- Brightest and most powerful light
- Instant illumination
- Uses integrated FlashLight
- Full screen light source
- Variable brightness level
- Variable blinking speed
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There are many flashlight apps out there, so why get this one ? - Brightest and most powerful light available - It is simple and well designed - launch it and get light instantly by pressing one button - uses the integrated FlashLight - also uses your full screen as a light source (works on all devices) - it is FREE! - variable brightness level - variable blinking speed Try it. It's simply the best at what it does. Disclaimer: Continued use of the FlashLight on iPhone may dramatically decrease battery life.
LED Resistor Calculator Plus
Calculate the correct series resistor needed to safely power light-emitting diodes. Input supply voltage, LED voltage drop, current, and the number of LEDs to find the required resistor value and wattage.
- Calculate series resistor value
- Determine resistor power dissipation
- Recommend resistor wattage
- Supports multiple LEDs in series
- Input supply voltage, LED voltage, and current
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LED resistance calculator use to determine the series resistor needed to connect various series combinations of light emitting diodes or "LEDs". LED resistance calculator will assist you pick the resistors make the connections for any number of LEDs. Every (LED) light emitting diode has a current that they can handle safely. Going beyond it maximum current will damage the LED. So limiting the current through the LED with the use of a series resistor is a common practice. LED resistance calculator will help you determine the value of the resistor so you can add in series with the LED to limit the current. Just input the indicated values and the result will be calculate automatically. The result include Resistor Value, Resistor Power Dissipation and Recommended Resistor Wattage. Formula: R = (Vs - Vf * Nled) / If Where: Vs - Supply Voltage Vf - LED voltage drop. The voltage drop on a LED depends on the color it emits. If- LED current. The usual operating range of common 3 mm and 5 mm LEDs is 10-30 milliamps. Nled - Number of LEDs in series A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable current is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor. LEDs are typically small (less than 1 mm2) and integrated optical components may be used to shape the radiation pattern. Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared light. Infrared LEDs are still frequently used as transmitting elements in remote-control circuits, such as those in remote controls for a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Modern LEDs are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness. * This method is not recommended for high current LEDs, which need a more reliable switching current regulator. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is review sentiment: FlashLight LED HD at 79% against LED Resistor Calculator Plus's 0%. FlashLight LED HD also leads on price (Free vs $2.99) and update cadence (every 5 weeks vs every 47 months). LED Resistor Calculator Plus's advantage is ads (none vs shown) and rating (4.8 vs 4.4). On 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
FlashLight LED HD is free to download; LED Resistor Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LED Resistor Calculator Plus holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: FlashLight LED HD has 778 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 79% of FlashLight LED HD's written reviews are positive against 0% of LED Resistor Calculator Plus's, so the app with the better star average is not the one people write more warmly about.
FlashLight LED HD ships an update every 5 weeks, LED Resistor Calculator Plus every 47 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.
| Parameter | FlashLight LED HD | LED Resistor Calculator Plus |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.4 (778 ratings) | 4.8 (8 ratings) — better |
| Positive reviews | 78.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 778 — better | 8 |
| Update frequency | Every 5 weeks — better | Every 47 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13 — better |
| Further details — not scored | ||
| Size | 26 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | smalltech sarl | Nitrio |
Customer experience
FlashLight LED HD
LED Resistor Calculator Plus
Bugs and requests
FlashLight LED HD
Reported bugs
3 issues- Crashes on launch
- Screen goes orange then app closes
- Buttons/controls not showing up
Requested features
4 requests- Add white/clear light option
- Improve brightness control
- Add strobe or SOS mode
- Allow light to stay on when app is closed
LED Resistor Calculator Plus
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FlashLight LED HD
No in-app purchases
LED Resistor Calculator Plus
No in-app purchases
Questions
Is FlashLight LED HD free?
Is LED Resistor Calculator Plus free?
Which has better reviews, FlashLight LED HD or LED Resistor Calculator Plus?
Do FlashLight LED HD or LED Resistor Calculator Plus have ads?
Which is updated more often, FlashLight LED HD or LED Resistor Calculator Plus?
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