Engraver vs Mobile PEF US
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engraver
This utility app connects to a laser engraver via Bluetooth. It allows users to import images, input text, and generate QR codes for engraving. Simple image processing is also supported, making it easy to use.
- Bluetooth connectivity
- Import pictures
- Input text
- Generate 2D codes
- Simple picture processing
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The app connects the device through Bluetooth, can import pictures or input text, can generate two-dimensional code, can process pictures simply, easy to operate! Powerful!
Mobile PEF US
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The app can record the user's PEF,FEV1, FEV6,FVC value and can calculate PEFR,PEF%,FEV1%,FEV1/FEV6,FEV1/FVC and record it Disclaimer: Please note that this application is not a medical advice or diagnostic tool provided by a medical professional. Any use of the information or features of this Application should be used as a reference and aid, not as a substitute for advice from a medical professional. Users to seek a doctor’s advice in addition to using this app and before making any medical decisions.
Screenshots
Verdict
The clearest difference is update cadence: Engraver at every 4 months against Mobile PEF US's every 14 months. Mobile PEF US's advantage is iOS requirement (13.0 vs 15.6). 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.
Engraver ships an update every 4 months, Mobile PEF US every 14 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.
| Parameter | Engraver | Mobile PEF US |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (23 ratings) — better | — |
| Positive reviews | 22.5% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 4 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 32 MB |
| Age rating | 4+ | 12+ |
| Developer | Dongguan Xinjia Laser Technology Co., Ltd | 泰安大陆医疗器械有限公司 |
In-app purchases
Engraver
No in-app purchases
Mobile PEF US
No in-app purchases
Questions
Is Engraver free?
Is Mobile PEF US free?
Do Engraver or Mobile PEF US have ads?
Which is updated more often, Engraver or Mobile PEF US?
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