TracingMat vs Lockpi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TracingMat
Transform your device into a digital light table for tracing. Display an image and overlay your paper to easily copy designs. Adjust brightness, zoom, and rotate for optimal tracing conditions.
- Use device as a light table
- Overlay paper for tracing
- Adjustable screen brightness
- Image zoom and pan
- Image flip and rotate
- Add images via import or camera
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"Tracing Mat" is an app for using your iPad or iPhone as a light table. After displaying the image you want to copy on the app, place the copy destination paper on it and trace the image that can be seen through under the paper. It is also possible to prepare the manuscript on paper, stack the copy destination paper on it, place it on the screen, and illuminate it from below with this application. [How to use] Tap the “gear” button on the upper right to enter the setting mode. In the setting mode, add the image to be displayed with the “+” button or "Camera" button at the bottom left. You can also add text using the "T" button. Tapping a displayed image or text highlights it with a yellow frame; in this state, you can move it by dragging, or zoom in and out using a pinch gesture. Images and text can also be flipped or rotated, while text can be edited or have its styling modified. You can save the current image and text layout with the “Save” button, and restore the saved layout later with the “Load” button, even after restarting the app. The screen brightness can be adjusted with the slider bar at the bottom right. When you tap the “left arrow” button on the upper left to exit the setting mode, the displayed image and text will be fixed, so place a piece of paper on the screen and trace it. [Caution] - I think it is easier to see the image under the paper if the room is darkened a little. - Attach a protective film, etc., to prevent the display from being scratched during copying. - Please use this application at your own risk. We do not take any responsibility for the disadvantage caused by using this application.
Lockpi
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Sometimes, you accidentally copy some content, but forget to clear it. You need a tool that is light enough and fast enough to clear the copied contents of the clipboard. This software is to solve this problem one-stop. *Quickly clear or replace your private content with the simplest switch or click mode. *You can set a privacy secret, replace the contents of your clipboard, and make it available to you at any time. *A content obfuscator can be set to replace the copied content with content that others cannot understand.
Screenshots
Verdict
The clearest difference is price: TracingMat at Free against Lockpi's $0.99. TracingMat also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (12.4 vs 14.0). Lockpi's advantage is ads (none vs shown). On 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
TracingMat is free to download; Lockpi costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TracingMat ships an update every 3 months, Lockpi every 14 months. The most recent releases landed on October 13, 2026 and November 25, 2025 respectively.
| Parameter | TracingMat | Lockpi |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.8 (23 ratings) — better | — |
| Positive reviews | 64.5% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 3 months — better | Every 14 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.4 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Yoko Nishimura | 贞平 阮 |
In-app purchases
TracingMat
No in-app purchases
Lockpi
No in-app purchases









