# LightFi Air vs Workout Tracker & Log

The clearest difference is in-app purchases: LightFi Air at none against Workout Tracker & Log's 1. LightFi Air also leads on iOS requirement (12.4 vs 17.6). Workout Tracker & Log's advantage is update cadence (monthly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Workout Tracker & Log sells 1 in-app purchase, starting at $1.99 per month. LightFi Air asks for nothing beyond the download.

LightFi Air ships an update every 3 months, Workout Tracker & Log monthly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | LightFi Air | Workout Tracker & Log |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 43 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 Tracker & Log

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

This app offers a minimalist approach to workout tracking, focusing on efficient logging and powerful progress visualization for serious lifters. It intentionally excludes distracting features like social feeds and meal plans, providing essential tools for strength training and habit tracking.

**Highlights:** Minimalist workout logging, Intelligent exercise library, Visual progress tracking, Flexible logging options, Powerful workout management, No social feeds or distractions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |


## Frequently asked questions

### Is LightFi Air free?

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

### Is Workout Tracker & Log free?

Workout Tracker & Log is free to download, with in-app purchases available.

### Do LightFi Air or Workout Tracker & Log have ads?

Neither LightFi Air nor Workout Tracker & Log shows ads.

### Which is updated more often, LightFi Air or Workout Tracker & Log?

LightFi Air ships an update every 3 months, and Workout Tracker & Log monthly. Most recently, LightFi Air was updated on November 3, 2026 and Workout Tracker & Log on November 5, 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.*