# LightFi Air vs Workout tracking

The clearest difference is in-app purchases: LightFi Air at none against Workout tracking's 2. LightFi Air also leads on iOS requirement (12.4 vs 17.6). Workout tracking's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Workout tracking sells 2 in-app purchases, starting at $1.99 per month. LightFi Air asks for nothing beyond the download.

LightFi Air ships an update every 3 months, Workout tracking every 3 weeks. The most recent releases landed on September 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LightFi Air | Workout tracking |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/workout-tracking-justlog/id6749898793/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 26 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LightFi Limited](https://appshunter.io/developer/1598090866) | [Alifba](https://appshunter.io/developer/1832723677) |

## What reviewers say

### LightFi Air

[App page](https://appshunter.io/ios/app/lightfi-air/id1598090864)

Monitor your indoor air quality by displaying live Carbon Dioxide (CO₂) levels and other sensor data from connected devices. The app helps you understand your environment's impact on health, well-being, and productivity, suggesting actions like increasing ventilation when levels are high.

**Highlights:** Live CO₂ level display, Monitors multiple sensors, Customizable sensor names, Sorts sensors by distance, Health and productivity insights

**Features:** macOS Compatibility

**In-app purchases:** none


### Workout tracking

[App page](https://appshunter.io/ios/app/workout-tracking-justlog/id6749898793)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is LightFi Air free?

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

### Is Workout tracking free?

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

### Do LightFi Air or Workout tracking have ads?

Neither LightFi Air nor Workout tracking shows ads.

### Which is updated more often, LightFi Air or Workout tracking?

LightFi Air ships an update every 3 months, and Workout tracking every 3 weeks. Most recently, LightFi Air was updated on September 29, 2026 and Workout tracking on October 24, 2026.

---

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