# Photone vs Evodevice

The clearest difference is review sentiment: Photone at 54% against Evodevice's 0%. Photone also leads on rating (4.6 vs 1.5) and ratings volume (4.9K vs 2). Evodevice's advantage is in-app purchases (none vs 13). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Photone sells 13 in-app purchases, starting at $5.49 per month. Evodevice asks for nothing beyond the download.

Photone holds the better App Store score, 4.6 against 1.5. That said, the two scores are not equally well evidenced: Photone has 4.9K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 54% of Photone's written reviews are positive against 0% of Evodevice's.

Photone ships an update monthly, Evodevice every 3 months. The most recent releases landed on September 28, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Photone | Evodevice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.9K ratings)](https://appshunter.io/ios/app/photone-grow-light-meter/id1450079523/reviews)** | [1.5 (2 ratings)](https://appshunter.io/ios/app/evodevice/id6745856477/reviews) |
| Number of ratings | **4.9K** | 2 |
| Positive reviews | **53.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 80 MB | 34 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lightray Innovation GmbH](https://appshunter.io/developer/1031383431) | [健成 李](https://appshunter.io/developer/1055522601) |

## What reviewers say

### Photone

[App page](https://appshunter.io/ios/app/photone-grow-light-meter/id1450079523)

This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.

**Highlights:** Measure PAR, PPFD, DLI, lux, foot-candles, and kelvin, Research-grade accuracy using device camera, Pre-calibrated for specific devices, In-app guides and tools, Light source selection for various grow lights, Hands-free 'read aloud' function

**Features:** Apple Watch app

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Photone Pro (Monthly) | $5.49 | per month |
| Photone Pro (Yearly) | $29.49 | per year |
| MH lifetime unlock | $5.49 | one-time |
| HPS (Standard) lifetime unlock | $5.49 | one-time |
| HPS DE lifetime unlock | $5.49 | one-time |
| FL (Daylight) Lifetime Unlock | $5.49 | one-time |
| Sun Lifetime Unlock | $5.49 | one-time |
| LED Full Spec. lifetime unlock | $6.49 | one-time |
| LED (Red / Blue) Lifetime Unlock | $6.49 | one-time |
| LED (Blue / White) Lifetime Unlock | $6.49 | one-time |
| LED (Full Spectrum) Lifetime Unlock | $6.49 | one-time |
| LED (Full Spectrum + Red) Lifetime | $6.49 | one-time |
| Photone Pro Lifetime Unlock | $97.00 | one-time |

**What reviewers like**

- 🚀 Accurate readings
- 💡 Helpful for growing plants
- 👍 Easy to use
- 🚀 Saves money compared to expensive meters
- 👍 Useful for adjusting lighting

**What reviewers complain about**

- 🐛 Inconsistent readings
- 💰 Expensive in-app purchases
- 🔒 Requires additional equipment (diffuser) to work properly
- 🐛 Readings not accurate without calibration
- 🔒 Limited functionality in free version

**Reported bugs**

- Readings don't change with proximity
- Diffuser requirement not made clear upfront
- Purchased features not working as expected

**Requested features**

- Add calibration feature
- Expand supported light types in free version
- Improve accuracy across different devices
- Provide a one-time purchase option instead of subscription


### Evodevice

[App page](https://appshunter.io/ios/app/evodevice/id6745856477)

Easily connect and control your smart environment with Bluetooth-enabled tools. Adjust lighting colors and timers, monitor soil moisture levels, and export environmental data with a user-friendly interface.

**Highlights:** Bluetooth pairing, Customizable lighting, Soil moisture monitoring, Data export, User-friendly interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Photone free?

Photone is free to download, with in-app purchases available.

### Is Evodevice free?

Evodevice is free to download, with no in-app purchases.

### Which has better reviews, Photone or Evodevice?

Photone is rated higher. Photone averages 4.6 out of 5 from 4.9K ratings, while Evodevice averages 1.5 from 2 ratings.

### Do Photone or Evodevice have ads?

Neither Photone nor Evodevice shows ads.

### Which is updated more often, Photone or Evodevice?

Photone ships an update monthly, and Evodevice every 3 months. Most recently, Photone was updated on September 28, 2026 and Evodevice on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*