STL Master vs Chop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STL Master
View and interact with 3D models in augmented reality. Share instant screenshots and screen recordings of your designs directly from the app.
- STL file viewing
- Augmented reality (AR) mode
- Instant screenshots
- Screen recording
- Design sharing
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This app also allows you to share instant screenshots and screen recording videos of your designs without using any other tools/apps.
Chop
Plan your weekly meals and automatically generate a shopping list. Easily add or remove items, and share your meal plans with others. Supports SFTP for menu and shopping list uploads/downloads.
- Create meal lists with required ingredients
- Generate shopping lists from meal plans
- Delete items already in stock
- Share meal lists with others
- SFTP upload/download for menus and shopping lists
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If you find it difficult to think up meal ideas for the week ahead, you can use this app to store all of your meals and ingredients to help build your shopping list. - Think up a meal, add all of the items required into a Meal List. Keep adding as many Meal Lists as you like! - When planning meals for the week ahead, scroll through your pre-made list, choose what you fancy and add the items in one click to your shopping list! - If you already have an item in stock at home you can just delete it from the shopping list - Share your Meal Lists with others If you have a SFTP server, you can upload your Menu Lists and upload your shopping list. If you share your login details, others can download the menus and shopping list. (Icons from https://www.flaticon.com created by Freepik)
Screenshots
Verdict
The clearest difference is review sentiment: Chop at 100% against STL Master's 86%. STL Master's advantage is device support (4 vs 1) and iOS requirement (14.1 vs 16.6). 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.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.
| Parameter | STL Master | Chop |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (49 ratings) — better | — |
| Positive reviews | 86.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 49 — better | — |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 14.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 68 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | JA Logic Labs LLC | Samuel Hepburn |
Customer experience
STL Master
Chop
Bugs and requests
STL Master
Reported bugs
13 issues- App crashes immediately on launch
- Files won't open or load
- Objects disappear when moved
- Inconsistent file orientation on load
- Markup mode traps user and requires app restart
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- Buttons don't toggle/close properly
- Measurement dimensions display as mirror images
- HDRI background doesn't affect model lighting
- Freezing in editing/pen tip mode
- Objects zoomed in with no zoom out capability
- Parts of model cut off or not displayed
- Mac version has significant stability issues
- iOS 10.2 compatibility crash
Requested features
13 requests- More color and material options
- Unit measurement display and metric/standard conversion
- How-to video tutorials for hidden features
- Proper zoom in/out controls
- Object positioning/movement button
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- Measurement and dimension tools
- Drag-and-drop file opening support
- Menu items for file operations
- Closeable menu buttons
- More file format support
- HDRI lighting affecting model rendering
- Save functionality for combined files
- Proper markup mode functionality
Chop
Not enough reviews yet to summarise bugs or requests.
In-app purchases
STL Master
No in-app purchases
Chop
No in-app purchases
