InnoReef vs Penlight.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InnoReef
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This APP is used to control InnoReef LED aquarium light, which support five dimming channels, support auto mode, instant mode, moon mode and lighting effect, coral suitable effect.
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: InnoReef at Free against Penlight.'s $1.99. InnoReef also leads on iOS requirement (12.0 vs 16.0). Penlight.'s advantage is update cadence (daily vs every 6 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
InnoReef is free to download; Penlight. costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
InnoReef ships an update every 6 months, Penlight. daily. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.
| Parameter | InnoReef | Penlight. |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | 精豪 薛 | My Call Bag LLC |
In-app purchases
InnoReef
No in-app purchases
Penlight.
No in-app purchases
