Illuminance Pulsation Meter vs EvernightBoard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Illuminance Pulsation Meter
Measure the ripple coefficient of light sources to identify screens that may cause eye strain or fatigue. Helps in selecting lamps, monitors, and laptops with minimal screen flicker.
- Measure ripple coefficient of light sources
- Test LED, LCD, and fluorescent lamps
- Monitor screen flicker in real-time
- Visual indicator scale from green to red
- Guidance for stable phone positioning
Read full descriptionHide full description
The application will help you choose a lamp, monitor or laptop with a screen without pulsations. A high coefficient of pulsation can affect fatigue, well-being and eye strain. The application allows you to measure the ripple coefficient of radiation sources in the visible spectrum: - LED, halogen, fluorescent lamps and incandescent lamps - various lamps - LCD and LED monitors and TVs The readings are not 100% reliable and the average error depending on the light source and the frequency of pulsation can be more than 10%. In order to take measurements, you need to bring the phone to the measured source and press the start button. The measurement results will be updated in real time, the arrow will show the ripple factor, and the scale will be filled from green to red. For best results, keep your phone straight. If the phone is not fixed, an image of the shaking device will appear in the lower left corner of the screen and the readings will be very different from the actual ones.
EvernightBoard
Read full descriptionHide full description
Gathering the brocaded words of the long night, transforming ten thousand thoughts into this space. EvernightBoard is a display-assistive tool that prolongs your communication through preset images and text when both touchscreen access and verbal communication are limited. * Use Cases: - When verbal communication is limited and touchscreen precision is extremely low (e.g., wearing gloves) or the touchscreen is unusable, use preset large text or images to quickly convey information to others. - Presenting prompts to the stage from offstage. - Scenarios where you simply need to display text messages or images in large sizes on the screen and be able to turn pages. * Supported Page-Turning Methods: - Switch screens using icon buttons in the navigation bar: The most standard method for page navigation. - In portrait mode, the navigation bar automatically shifts to the slightly tilted side of the phone, ensuring the thumb of either hand can easily reach it. - In landscape mode, the navigation bar always remains at the bottom. - Touch half of the screen to switch screens: Enables accurate page turning even with low touch precision. - Portrait mode: Top and bottom halves. - Landscape mode: Left and right halves. - Use volume buttons to turn pages: Physical buttons serve as your most reliable backup. This feature must be enabled separately in the software settings.
Screenshots
Verdict
The clearest difference is price: EvernightBoard at Free against Illuminance Pulsation Meter's $3.99. EvernightBoard also leads on update cadence (fortnightly vs every 7 months) and iOS requirement (13.0 vs 15.6). 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
EvernightBoard is free to download; Illuminance Pulsation Meter costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Illuminance Pulsation Meter ships an update every 7 months, EvernightBoard fortnightly. The most recent releases landed on September 10, 2026 and June 7, 2026 respectively.
| Parameter | Illuminance Pulsation Meter | EvernightBoard |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.2 (32 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 32 — better | — |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | ALEXEY KOZLOV | XIAOCHI CHEN |
In-app purchases
Illuminance Pulsation Meter
No in-app purchases
EvernightBoard
No in-app purchases





