Comparison

ISD Link vs Aqi Qube

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

Head to head
About

ISD Link

This app allows interaction with various smart devices. It prioritizes user privacy by saving all data locally and not collecting personal information. Bluetooth is required for device scanning and connection.

Highlights
  • Smart device interaction
  • Local data saving
  • No account registration
  • Bluetooth connectivity
  • Supports numerous device models
Features
Read full description

ISD Link is an APP specially designed for smart device interaction. 1. ISD Link does not have an account registration function, and all data on the device is saved locally and will not be uploaded to remote servers. It promises not to collect user information. 2. During use of ISD Link, Bluetooth needs to be turned on for device scanning and connection. 3.ISD Link supports the following devices: TESTV co-branded model PB25DW, TESTV co-branded model PB40, MAG20, PB70W, PB40, PB50DW, PB10DW, PB25DW, ZIP, Power200 series, EDGE, NP2GO, 608PD, A8Air, A4Air, Air8, C4Air, B80 /B60, K4, X16, K2Air, NP2Air, LP2Air.

About

Aqi Qube

Features
Read full description

Aqi Qube is a comprehensive application designed to empower users with detailed insights into their immediate environment's air quality and atmospheric conditions using our IOT Device (Air Qube) The app presents a user-friendly interface displaying critical metrics such as PM1.0, PM2.5, PM4.0, and PM10, which represent different sizes of airborne particulate matter, measured in micrograms per cubic meter (μg/m 3 ). It also tracks relative humidity (RH%) and temperature ( ∘ F). Beyond physical parameters, Aqi Qube monitors key gaseous pollutants like Volatile Organic Compounds (VOC), Nitrogen Dioxides (NOX - in ppb), Carbon Dioxides (CO2 - in ppm), and Carbon Monoxide (CO - in ppm). The app clearly indicates the status ("DEVICE ONLINE") and the last update time, ensuring users have access to current data. Visual indicators, such as icons next to each parameter, provide quick assessments of the readings (e.g., green for good, orange/red for elevated levels). This app, "A Product of EIRX System, LLC USA," serves as an essential tool for individuals concerned about their indoor or outdoor air quality.

Screenshots

ISD Link3 screens
Aqi Qube3 screens

Verdict

The call

The clearest difference is iOS requirement: Aqi Qube at 12.0 against ISD Link's 16.6. 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

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

ISD Link ships an update fortnightly, Aqi Qube every 9 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
ISD Link versus Aqi Qube: the parameters behind the verdict, then further details
ParameterISD LinkAqi Qube
PriceFreeFree
Rating2.1 (26 ratings) — better—
Positive reviews20.7% of reviews—
Number of ratings26 — better—
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.612.0 — better
Further details — not scored
Size3 MB31 MB
Age rating4+4+
Developer深圳艾斯特创新科技有限公司EIRX, LLC

In-app purchases

None

ISD Link

No in-app purchases

None

Aqi Qube

No in-app purchases

Questions

Is ISD Link free?
ISD Link is free to download, with no in-app purchases.
Is Aqi Qube free?
Aqi Qube is free to download, with no in-app purchases.
Do ISD Link or Aqi Qube have ads?
Neither ISD Link nor Aqi Qube shows ads.
Which is updated more often, ISD Link or Aqi Qube?
ISD Link ships an update fortnightly, and Aqi Qube every 9 days. Most recently, ISD Link was updated on November 7, 2026 and Aqi Qube on October 30, 2026.

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