Moongate vs STL Viewer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Moongate
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Moongate puts every Klipper 3D printer you own on one dashboard, at home or anywhere. It connects straight to your own Raspberry Pi running Klipper and Moonraker. Pair once by scanning a QR code, and Moongate reaches your printer directly on your Wi-Fi, or securely over an encrypted tunnel when you are away. No account, no email, no password. Sign-in is anonymous, and there are no ads, no analytics, and no tracking. Features: - One dashboard for your whole fleet, with live webcam, temperatures, and print progress - The full Mainsail or Fluidd web interface built in - Start, pause, and stop prints, plus a double-tap emergency stop - A Control panel for each printer: heater targets, homing, jogging, extrude and retract, and your macros as labelled buttons with their own icons, colours and parameters, arranged the way you want - A Klipper-aware config editor that suggests section and option names, checks values before you save, and edits macro G-code inline, plus a console with command completions - A file browser for your printer that hides backup clutter so your real config files stand out - Power machines on and off (smart plug or Klipper macro) - Preheat and heat-soak from the dashboard - Optional push notifications for print started, finished, and failed - App lock with Face ID, Touch ID, or a PIN - Custom themes, drag-to-arrange tiles, and an adjustable display size - Back up and restore your setup - Available in 9 languages Moongate is free and source available. You host everything yourself, and your printers stay yours. Note: Moongate needs the free Moongate plugin installed on your printer's Raspberry Pi. Setup guide: github.com/PEEKYPAUL/Moongate
STL Viewer
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Someone sent you a model. It's a 3MF, you're away from your computer, and your phone can't open it. LayerPeek opens it, then tells you what you need to know before you print: will it fit your printer, how many plates it has, and what might go wrong. It's a 3D model viewer made for printing: an STL file viewer, a 3MF project viewer and a G-code layer viewer in one app. No account. Your files are read on your device and never uploaded. OPEN THE FILE YOU WERE SENT β’ STL, 3MF, OBJ and G-code files, plus sliced .gcode.3mf projects β’ ZIP downloads from model sites: pick the part you want from inside the archive β’ Open from Files, iCloud Drive, Mail, AirDrop or a chat app with Open inβ¦ β’ Large models are simplified for display, while measurements use the full mesh WILL IT FIT YOUR PRINTER? Pick your printer once. Every model you open shows whether it fits the bed, with the spare room in millimeters. If it doesn't fit as it sits, LayerPeek checks whether turning it on the bed would make it fit. 3MF PROJECTS, NOT JUST SHAPES Opens 3MF projects from popular slicers with their plates and filament colors. Switch between plates and see which parts sit on each one. SLICED FILES: TIME AND GRAMS FROM THE FILE Sliced .gcode.3mf projects already carry the numbers your slicer calculated. LayerPeek reads the print time, the grams of each filament color and the plate thumbnails straight from the file. Plain .gcode files show the print time and filament use written in their header. G-CODE LAYER VIEWER β’ Drag the scrubber to step through the print layer by layer β’ See extrusion and travel moves in different colors β’ Print time and filament use, read from the file MEASURE AND CHECK THE MESH β’ Overall dimensions in millimeters β’ Tap two points to measure the distance between them β’ Mesh health: holes and open edges that can cause slicing trouble β’ Overhang shading shows the areas likely to need supports WEIGHT AND COST ESTIMATE Choose a material and your price per kilogram. For unsliced models, LayerPeek estimates a typical print (2 walls, 15% infill) and also shows the fully solid weight. Sliced files show the grams your slicer calculated. MAKE PARTS THAT FIT Need a part rather than a file? Pick a template, set the sizes in millimeters, see it on your printer's bed and save an STL or 3MF: β’ Cases for popular microcontroller and single-board computer boards, built from their published dimensions β’ Boxes with dividers, name tags in one or two colors, cable clips, spacers and wall mounts β’ Turn a photo into a lithophane, a keychain, a sign or a stamp SHARE A VERDICT CARD Turn the result into one image with a picture of the model, the fit check and the key numbers. Send it to a friend, a customer or your print group. FREE, WITH AN OPTIONAL PRO UPGRADE LayerPeek is free with ads. Pro removes the ads and unlocks the Pro Make templates, pricing a plate with cost and margin, advanced checks with multiple printers, and more colors in colour pictures. SUPPORTED FILES .stl (binary and text) Β· .3mf Β· .gcode.3mf Β· .obj Β· .gcode Β· .zip SUBSCRIPTION AND PRICING β’ LayerPeek Pro Lifetime β $9.99, one payment β’ LayerPeek Pro Monthly β $1.99 per month, renews automatically β’ Payment is charged to your Apple Account at confirmation of purchase β’ A subscription renews unless it is cancelled at least 24 hours before the end of the current period β’ Manage or cancel anytime in your Apple Account settings Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cosmovex.web.app/apps/layerpeek/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: Moongate at none against STL Viewer's 8. Moongate also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. STL Viewer sells 8 in-app purchases, starting at $1.99 per month. Moongate asks for nothing beyond the download.
Moongate ships an update every 10 days, STL Viewer every 2 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.
| Parameter | Moongate | STL Viewer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days β better | Every 2 weeks |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod β better |
| Requires iOS | 15.0 | 15.0 |
| Further details β not scored | ||
| Size | 39 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Sharman | Sahana A S |
In-app purchases
Moongate
No in-app purchases
STL Viewer
- LayerPeek Pro Monthly$1.991 Month
- Pro Lifetime Limited Offer$5.99
- Pro Lifetime Limited Offer$7.99
- Pro Lifetime Limited Offer$9.99
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- Pro Lifetime Limited Offer$11.99
- Pro Lifetime Limited Offer$13.99
- Pro Lifetime Limited Offer$15.99
- LayerPeek Pro Lifetime$19.99
Questions
Is Moongate free?
Is STL Viewer free?
Do Moongate or STL Viewer have ads?
Which is updated more often, Moongate or STL Viewer?
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