Comparison

Air Detector vs SecureDocs Sentry

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Encripted Qr Code Scanner Tool

Free

🔧 Utilities

No ratingsView app →

About

Air Detector

Features

Read full description

1. This APP is used to connect and display the data transmitted by the hardware through Bluetooth connection, which mainly includes PM2.5, PM10, temperature, humidity and other air quality data. 2. APP can communicate with the server and upload the air quality data transmitted by the hardware. After login successfully, historical data can be obtained from the server.

About

SecureDocs Sentry

Features

Read full description

SecureDocs Sentry Decoder Tool

Screenshots

Air Detector1 screens

SecureDocs Sentry3 screens

Verdict

The call

Air Detector and SecureDocs Sentry are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Air Detector ships an update every 5 months, SecureDocs Sentry every 9 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

ScorecardNo meaningful differences

Air Detector versus SecureDocs Sentry: the parameters behind the verdict, then further details
Parameter	Air Detector	SecureDocs Sentry
Price	Free	Free
Update frequency	Every 5 months — better	Every 9 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	12.0 — better	13.0
Further details — not scored
Size	23 MB	73 MB
Age rating	17+	4+
Developer	Shenzhen Everbest Machinery Industry Co.,Ltd	Troy Group, Inc.

In-app purchases

None

Air Detector

No in-app purchases

None

SecureDocs Sentry

No in-app purchases

Questions

Is Air Detector free?

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

Is SecureDocs Sentry free?

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

Do Air Detector or SecureDocs Sentry have ads?

Neither Air Detector nor SecureDocs Sentry shows ads.

Which is updated more often, Air Detector or SecureDocs Sentry?

Air Detector ships an update every 5 months, and SecureDocs Sentry every 9 months. Most recently, Air Detector was updated on November 3, 2026 and SecureDocs Sentry on October 30, 2026.