# dictionary.camera vs Airthings

The clearest difference is monetization model: dictionary.camera at free against Airthings's free with in-app purchases. dictionary.camera also leads on iOS requirement (13.0 vs 17.6). Airthings's advantage is ratings volume (3K vs 31) and update cadence (fortnightly vs monthly). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Airthings holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: Airthings has 3K ratings behind it against 31, so its average is the more settled of the two. Written reviews complicate that: 36% of dictionary.camera's written reviews are positive against 33% of Airthings's, so the app with the better star average is not the one people write more warmly about.

dictionary.camera ships an update monthly, Airthings fortnightly. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | dictionary.camera | Airthings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (31 ratings)](https://appshunter.io/ios/app/dictionarycamera/id1545347607/reviews) | **[4.4 (3K ratings)](https://appshunter.io/ios/app/airthings/id1560329275/reviews)** |
| Number of ratings | 31 | **3K** |
| Positive reviews | **35.7% of reviews** | 33.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 104 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [X2 Mobile Development SRL](https://appshunter.io/developer/968345898) | [Airthings ASA](https://appshunter.io/developer/1101077902) |

## What reviewers say

### dictionary.camera

[App page](https://appshunter.io/ios/app/dictionarycamera/id1545347607)

Instantly understand unfamiliar words while reading by pointing your camera at them. The app saves your looked-up words for easy review, helping you expand your vocabulary effortlessly. Enjoy a seamless reading experience without interruption.

**Highlights:** Camera-based word lookup, Instant definition display, Automatic search history, Vocabulary tracking, Seamless reading integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Airthings

[App page](https://appshunter.io/ios/app/airthings/id1560329275)

Monitor and improve your indoor air quality with smart devices. Get real-time insights, track trends, and receive actionable advice to enhance focus, reduce allergies, and sleep better. Control your air purifier and stay informed about pollen forecasts.

**Highlights:** Quick device setup, At-a-glance air quality indicators, Detailed trend tracking, Air purifier remote control, 5-day pollen forecast, Air quality notifications, Personalized air reports

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Simple to understand and setup
- 🚀 Intuitive and easy to use app
- 🚀 Efficient and fast
- 🚀 Provides great information on air quality
- 🚀 Accurate and reliable sensor readings

**What reviewers complain about**

- 🐛 App has connectivity issues, often fails to sync
- 🐛 App is buggy and has many errors
- 🐛 Inaccurate or inconsistent sensor readings
- 🐛 Difficult to set up and connect devices
- 🐛 Lack of customization options for thresholds and notifications

**Reported bugs**

- App crashes frequently
- Unable to add new devices or accounts
- Incorrect color coding and data display
- Delayed or missing sensor data updates
- Bluetooth connectivity issues

**Requested features**

- Add HomeKit integration
- Allow custom thresholds and notifications
- Improve data visualization and historical trending
- Add more detailed information on air quality issues and remedies
- Provide an iPad-optimized version of the app


## Frequently asked questions

### Is dictionary.camera free?

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

### Is Airthings free?

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

### Which has better reviews, dictionary.camera or Airthings?

Airthings is rated higher. dictionary.camera averages 4.2 out of 5 from 31 ratings, while Airthings averages 4.4 from 3K ratings.

### Do dictionary.camera or Airthings have ads?

Neither dictionary.camera nor Airthings shows ads.

### Which is updated more often, dictionary.camera or Airthings?

dictionary.camera ships an update monthly, and Airthings fortnightly. Most recently, dictionary.camera was updated on October 3, 2026 and Airthings on October 19, 2026.

---

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