FreshAir Sensor vs Backpack Checklist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FreshAir Sensor
This application allows you to set up and manage your FreshAir nicotine monitoring device. View real-time smoking alerts and monitor device status directly from your smartphone.
- Install FreshAir nicotine monitoring device
- View FreshAir smoking alerts
- Monitor device status
- Receive real-time notifications
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Use this app to install your FreshAir nicotine monitoring device, and review FreshAir smoking alerts.
Backpack Checklist
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This app provides following functions: 1. Maintain your own gear inventory (MyGear) 2. Keep more than one photos for each gear item. 3. Copy/create a new hiking place based on the gear inventory or existing places. 4. Inspect and check if there is any item which has not been put in list in advance before leaving. 5. Check and view the total weight anytime. 6. Generate the gear list in Excel format and upload to dropbox. 7. Backup all the data from app to dropbox. 8. Restore all the data back to app from dropbox.
Screenshots
Verdict
The clearest difference is update cadence: FreshAir Sensor at every 2 months against Backpack Checklist's every 6 months. Backpack Checklist's advantage is iOS requirement (10.0 vs 15.2). On price, ads, in-app purchases and device support 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.
FreshAir Sensor ships an update every 2 months, Backpack Checklist every 6 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.
| Parameter | FreshAir Sensor | Backpack Checklist |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.2 | 10.0 — better |
| Further details — not scored | ||
| Size | 72 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | FreshAir Sensor | WEN-PIN WANG |
In-app purchases
FreshAir Sensor
No in-app purchases
Backpack Checklist
No in-app purchases
Questions
Is FreshAir Sensor free?
Is Backpack Checklist free?
Do FreshAir Sensor or Backpack Checklist have ads?
Which is updated more often, FreshAir Sensor or Backpack Checklist?
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