GR Demo vs EMUT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GR Demo
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GR Demo是一款方便快捷的产品演示辅助工具，主要内容为多款简易的应用demo合集，可连接Gemred团队开发的多款产品并简单演示其无线连接、数据传输等核心功能，帮助相关人员更直观地讲解产品亮点。 GR Demo is a handy product demonstration auxiliary tool, and its main content is a collection of various simple application demos. GR Demo can connect to various products developed by the GemRed team and demonstrate their core functions such as wireless connection and data transmission, helping people explain product highlights intuitively.
EMUT
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The mobile app can obtain the thickness of the measured object in real time by connecting to the hotspot and the electromagnetic ultrasonic thickness gauge.
Screenshots
Verdict
GR Demo and EMUT are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
GR Demo ships an update every 6 weeks, EMUT every 2 months. The most recent releases landed on September 13, 2026 and August 21, 2026 respectively.
| Parameter | GR Demo | EMUT |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod, Mac — better |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 29 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | GemRed | Hangzhou Metrelink Technology Co., Ltd |
In-app purchases
GR Demo
No in-app purchases
EMUT
No in-app purchases
