ISD Link vs TATTU
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.
TATTU
This utility app provides battery management system (BMS) functions for smart batteries. It allows users to monitor and control battery parameters. Designed for efficient battery operation and maintenance.
- Battery Management System (BMS)
- Smart battery monitoring
- Battery parameter control
- Efficient battery operation
- Battery maintenance functions
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TATTU智能电池 BMS管理系统。
Screenshots
Verdict
The clearest difference is rating: ISD Link at 2.1 against TATTU's 1.0. ISD Link also leads on review sentiment (21% vs 0%) and ratings volume (23 vs 1). On price, ads, in-app purchases and monetization model 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 holds the better App Store score, 2.1 against 1.0. That said, the two scores are not equally well evidenced: ISD Link has 23 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 21% of ISD Link's written reviews are positive against 0% of TATTU's.
ISD Link ships an update every 3 weeks, TATTU every 2 months. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.
| Parameter | ISD Link | TATTU |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (23 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 21.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 23 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 61 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 深圳艾斯特创新科技有限公司 | Shenzhen Grepow Battery Co.Ltd. |
Customer experience
ISD Link
TATTU
In-app purchases
ISD Link
No in-app purchases
TATTU
No in-app purchases
