Reviews of Fast STL Viewer

By: Fast STL Viewer App

List of user reviews and ratings for Fast STL Viewer

Total ratings

2.91 (Rating count: 4,337)

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Review summary

Users praise Fast STL Viewer for speed and simplicity on mobile, especially for large STL files. However, multiple reviews report crashes, failures to open files, and compatibility issues. Monetization concerns (ads and subscriptions) and occasional data-loss concerns also recur. Overall sentiment is mixed: strong positives on fast, easy viewing, with reliability and pricing friction as the main drawbacks.

Pros

Very fast at opening large STL files and quick to view
Easy to use and works as a straightforward STL viewer
Good for mobile viewing and visualizing designs away from desktop
Does exactly what it says and provides basic, reliable functionality
Handy tool for quick STL viewing on the go

Cons

Frequent crashes and failure to open STL files on various devices
Ads and subscription model cause friction; ad removal options often unreliable
Some STL files are not recognized or supported (compatibility issues)
Potential data loss: opened files may be deleted from the device
UI/UX annoyances and occasional performance issues (timeouts, banners)

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User Reviews

Recent rating average: 1.80

All time rating average: 2.91

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43% (70)

Date	Author	Comment
2026-07-25	Pi*****	wow, the constant unskippable full screen ads are horrible and no pay once option. I could pay like even 20pln for this app. but no, there's only some weirdly expensive subscription option. bye
wow, the constant unskippable full screen ads are horrible and no pay once option. I could pay like even 20pln for this app. but no, there's only some weirdly expensive subscription option. bye
2026-07-14	Ma*****	it's good but ads pop up every use now and it's too often to keep using.
it's good but ads pop up every use now and it's too often to keep using.
2026-07-10	Co*****	has become completely unstable due to ads. they pop up immediately and open links in your browser. I just open everything in nomad sculpt now. would not recommend anymore.
has become completely unstable due to ads. they pop up immediately and open links in your browser. I just open everything in nomad sculpt now. would not recommend anymore.
2026-07-09	Ro*****	works well, ads quite intrusive now. would pay to remove ads, but not with a monthly subscription.
works well, ads quite intrusive now. would pay to remove ads, but not with a monthly subscription.
2026-07-07	Br*****	The ads are very annoying and make it impossible to close the app down. even without the ads on screen the app won't allow you to display the bottom buttons on Android so the only way to get out of the app is to click and open an advert and then you are able to close the app and the advert down. Good viewer but you will waste a lot of time trying to get out of it.
The ads are very annoying and make it impossible to close the app down. even without the ads on screen the app won't allow you to display the bottom buttons on Android so the only way to get out of the app is to click and open an advert and then you are able to close the app and the advert down. Good viewer but you will waste a lot of time trying to get out of it.
2026-06-29	Ma*****	paying for viewing the distance between two points? come on.
paying for viewing the distance between two points? come on.
2026-06-25	Ta*****	Far far too many ads
Far far too many ads
2026-06-24	Ne*****	used to use it a lot, but uninstalled due to being dominated by adds now.
used to use it a lot, but uninstalled due to being dominated by adds now.
2026-06-22	sk*****	If you like to be hijacked by invasive adds that you cannot turn off, then this one's for you.
If you like to be hijacked by invasive adds that you cannot turn off, then this one's for you.
2026-06-21	Ga*****	good for viewing stl files quickly.
good for viewing stl files quickly.