LightFi Air vs SPN App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LightFi Air
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.
- Live CO₂ level display
- Monitors multiple sensors
- Customizable sensor names
- Sorts sensors by distance
- Health and productivity insights
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This app displays live indoor Carbon Dioxide (CO₂) levels and other sensor data measured by LightFi sensors. Multiple sensors can be monitored simultaneously. You can give each sensor a unique name. When it scans the app sorts each sensor by approximate distance nearest first. It is important to monitor your indoor CO₂ levels for your health, well-being, and productivity. Research from Harvard University shows that continuous exposure to high CO₂ levels can diminish productivity, cause headaches, and increase the risk of viral transmission. When indoor CO₂ levels are high please increase fresh air flow, by opening a window for example.
SPN App
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The SPN app makes it very easy for you to manage your SPN account, book into our classes and events, watch our on-demand content, and keep in touch with us. You can easily message us if you have a question or want to share something with them. You can also follow our public feed to see any announcements we make, promos we run, or content we share.
Screenshots
Verdict
The clearest difference is iOS requirement: LightFi Air at 12.4 against SPN App's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 4, 2026 and September 9, 2026 respectively.
| Parameter | LightFi Air | SPN App |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 17 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | LightFi Limited | Momence, Inc. |
In-app purchases
LightFi Air
No in-app purchases
SPN App
No in-app purchases
