Engraver vs HAHA Lock
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!
HAHA Lock
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Add or delete the unlock permission of the smart lock through Bluetooth
Screenshots
Verdict
The clearest difference is iOS requirement: HAHA Lock at 12.0 against Engraver'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.
Engraver ships an update every 4 months, HAHA Lock every 5 months. Both last shipped on November 3, 2026.
| Parameter | Engraver | HAHA Lock |
|---|---|---|
| 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 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Dongguan Xinjia Laser Technology Co., Ltd | 映宇 陈 |
In-app purchases
Engraver
No in-app purchases
HAHA Lock
No in-app purchases
