# Humidity Checker vs PPFD METER

The clearest difference is review sentiment: PPFD METER at 53% against Humidity Checker's 0%. PPFD METER also leads on rating (4.6 vs 1.3) and update cadence (every 3 weeks vs every 8 months). Humidity Checker's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. PPFD METER sells 3 in-app purchases, starting at $1.99 per month. Humidity Checker asks for nothing beyond the download.

PPFD METER holds the better App Store score, 4.6 against 1.3. That said, the two scores are not equally well evidenced: PPFD METER has 132 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 0% of Humidity Checker's written reviews are positive against 53% of PPFD METER's.

Humidity Checker ships an update every 8 months, PPFD METER every 3 weeks. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Humidity Checker | PPFD METER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (16 ratings)](https://appshunter.io/ios/app/humidity-checker/id1553052368/reviews) | **[4.6 (132 ratings)](https://appshunter.io/ios/app/ppfd-meter-grow-light-meter/id6479329051/reviews)** |
| Number of ratings | 16 | **132** |
| Positive reviews | 0.0% of reviews | **52.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 46 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Condair A/S](https://appshunter.io/developer/642373446) | [Candas Pamukcu](https://appshunter.io/developer/1735587895) |

## What reviewers say

### Humidity Checker

[App page](https://appshunter.io/ios/app/humidity-checker/id1553052368)

This app helps you monitor and maintain optimal indoor humidity levels for better health and comfort. It calculates the amount of water needed to reach the ideal 40-60% RH range, using scientific formulas and providing simple visual indicators.

**Highlights:** Check healthy humidity levels, Calculate water needed to increase humidity, Visual traffic light indicators, Supports scientific expert formulas, Monitors temperature and humidity

**Features:** macOS Compatibility

**In-app purchases:** none


### PPFD METER

[App page](https://appshunter.io/ios/app/ppfd-meter-grow-light-meter/id6479329051)

This app measures light intensity for plants, converting LUX to PPFD and DLI. It offers advanced light mapping, uniformity analysis, and efficiency insights to optimize plant growth. Customize profiles for different environments and growth stages.

**Highlights:** LUX, PPFD, DLI, and PAR measurements, Light mapping and distribution analysis, Uniformity and PPF evaluation, Energy efficiency and consumption tracking, Customizable setting profiles, Bluetooth sensor integration

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Premium Plus | $2.99 | per month |
| Remove Ads | $29.99 | one-time |


## Frequently asked questions

### Is Humidity Checker free?

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

### Is PPFD METER free?

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

### Which has better reviews, Humidity Checker or PPFD METER?

PPFD METER is rated higher. Humidity Checker averages 1.3 out of 5 from 16 ratings, while PPFD METER averages 4.6 from 132 ratings.

### Do Humidity Checker or PPFD METER have ads?

PPFD METER shows ads; Humidity Checker does not.

### Which is updated more often, Humidity Checker or PPFD METER?

Humidity Checker ships an update every 8 months, and PPFD METER every 3 weeks. Most recently, Humidity Checker was updated on November 3, 2026 and PPFD METER on November 12, 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.*