ISD Link vs SUNNYSKY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Smart device interaction
- Local data saving
- No account registration
- Bluetooth connectivity
- Supports numerous device models
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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.
SUNNYSKY
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SUNNYSKY establishes a connection through the Bluetooth of the mobile phone and the Bluetooth of the ESC, so as to realize the functions of adjusting the parameters of the ESC, viewing the data, and upgrading the firmware.
Screenshots
Verdict
The clearest difference is iOS requirement: SUNNYSKY at 12.4 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ISD Link ships an update fortnightly, SUNNYSKY every 9 days. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.
| Parameter | ISD Link | SUNNYSKY |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (26 ratings) — better | — |
| Positive reviews | 20.7% of reviews | — |
| Number of ratings | 26 — better | — |
| Update frequency | Fortnightly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 12.4 — better |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | 深圳艾斯特创新科技有限公司 | 翔 任 |
In-app purchases
ISD Link
No in-app purchases
SUNNYSKY
No in-app purchases
