Write ID vs ZQDataLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Write ID
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Write ID is an APP that can be used to Write and modify device ids for multiple devices of our company - The APP is mainly used for internal testing and customers who purchase the company's products -The APP is mainly released in China and other countries
ZQDataLog
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该APP能同时连接多至8个BLE传感器，以获取传感器数据；同时以曲线图显示，或保存数据并通过邮件附件发出数据，以便于工程师分析数据，完善算法和改善硬件性能。免责声明：所有通过APP获取的数据只能用于算法工程师做数据分析使用，不适用于医疗或健康咨询行业。
Screenshots
Verdict
The clearest difference is iOS requirement: Write ID at 9.0 against ZQDataLog's 15.6. 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.
Write ID ships an update every 6 weeks, ZQDataLog every 5 weeks. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.
| Parameter | Write ID | ZQDataLog |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 9+ | 4+ |
| Developer | Shenzhen Chileaf Eletronics Co., LTD | 榆 秦 |
In-app purchases
Write ID
No in-app purchases
ZQDataLog
No in-app purchases
