DT Agent vs HH Smart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DT Agent
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DT Agent is an acoustic measurement app developed by Hangzhou Elite, designed specifically for professional acoustic testing. When used with the company’s USB measurement microphone, it enables accurate measurement of room reverberation time, sound pressure level (SPL), frequency spectrum, and STIPA (Speech Transmission Index for Public Address Systems).
HH Smart
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Effortless Smart Living — Along with You. Easily manage all your Henga smart devices right from your phone—remote control at your fingertips. Freely customize scenes and automation rules. Whether it’s environmental changes (like weather), precise timing, or device linkage, the app intelligently initiates actions, so your devices work together proactively, seamlessly adapting to your routines. Enjoy unprecedented convenience, comfort, and worry-free living—start your ideal life with ease, effortlessly along with you.
Screenshots
Verdict
The clearest difference is update cadence: DT Agent at every 2 weeks against HH Smart's every 3 months. On price, ads, in-app purchases and device support 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.
DT Agent ships an update every 2 weeks, HH Smart every 3 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.
| Parameter | DT Agent | HH Smart |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 37 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Elite Digital Technology Co., Ltd. | 深圳哼哈智能电子有限公司 |
In-app purchases
DT Agent
No in-app purchases
HH Smart
No in-app purchases
