ZOLAR vs Penlight.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZOLAR
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Zolar is an application independently developed by Shenzhen ImagineVision Technology Ltd. which can control multiple light fixtures. The App is mainly connected to the light fixture through Bluetooth or Wi-Fi, and the photographer can adjust the Correlated Color Temperature, Intensity, RGBAW and Light Effect of the light fixture in real time according to the usage scene, which greatly improves the convenience of using the light fixture. At the same time, Zolar App provides the function of firmware upgrade of light fixture, which improves the maintainability of light fixture.
Penlight.
This app provides a digital penlight with adjustable brightness and a built-in ruler for quick measurements. It also features color inversion for different examination needs and easy calibration using a credit card.
- Adjustable digital penlight brightness
- Credit card calibration for accuracy
- Color inversion for light/dark modes
- Metric and imperial ruler
- Educational examination tool
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Key Features: - Digital Penlight: Adjustable brightness slider for precise illumination - Easy Calibration: Quickly calibrate with a credit card to for accurate measurements - Color Inversion: Easily switch between light and dark modes for different examination needs - Ruler: Metric and imperial ruler for quick measurements Disclaimer: This app is intended for educational purposes only. It is not to be used for the diagnosis or treatment of any medical condition.
Screenshots
Verdict
The clearest difference is price: ZOLAR at Free against Penlight.'s $1.99. ZOLAR also leads on device support (3 vs 1) and iOS requirement (13.1 vs 16.0). Penlight.'s advantage is update cadence (daily vs every 2 months). On ads and in-app purchases 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
ZOLAR is free to download; Penlight. costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ZOLAR ships an update every 2 months, Penlight. daily. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.
| Parameter | ZOLAR | Penlight. |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 24 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ImagineVision Tech Co., Ltd | My Call Bag LLC |
In-app purchases
ZOLAR
No in-app purchases
Penlight.
No in-app purchases
