Comparison

LocBench vs STL Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LocBench

Features
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LocBench is a location testing tool for iOS developers, testers, and QA professionals. Using WLOC test data you select, it helps you validate how apps behave at different locations and along movement routes. LocBench does not modify device GPS data and is not intended for navigation, proof of location, or emergency use. KEY FEATURES • Search the map, pick a point, reference the current location, or enter precise coordinates • Support for WGS-84, GCJ-02, BD-09, UTM, Web Mercator, and DD, DMS, and DDM formats • Walking, cycling, and driving route tests with configurable duration and maximum speed • Save favorite locations for repeat testing • Use Shortcuts to run common test actions faster • Location and route testing requires a compatible third-party proxy app. After importing the LocBench WLOC module, the module only matches configured WLOC domains and processes responses locally on the device • No LocBench account required; no advertising, analytics, or tracking SDKs LOCBENCH PRO Applying a test location, route testing, favorites, and Shortcuts require LocBench Pro. Choose a monthly or yearly auto-renewable subscription, or make a one-time lifetime purchase. Products, currencies, prices, taxes, and any available offers are shown in the App Store purchase confirmation. Subscriptions renew automatically unless canceled in your Apple Account subscription settings. After cancellation, access normally continues until the end of the paid billing period. Deleting the app does not cancel a subscription. Eligible purchases can be restored in the app. AUTHORIZED USE LocBench is intended only for lawful and authorized development, testing, and quality assurance. Use it only with apps, services, networks, and devices that you own, administer, or have explicit permission to test. It must not be used to falsify attendance or transaction locations, cheat, bypass access controls, or conduct any unlawful or unauthorized activity. Privacy Policy: https://locb.cc/privacy Terms of Use: https://locb.cc/terms

About

STL Viewer

Features
Read full description

STL Viewer is a free, offline 3D model viewer for iPhone and iPad. It opens STL, 3MF, OBJ, PLY, OFF, 3DS, GLB and glTF files, measures them, estimates the print, shows them in AR at real size and converts them to STL. Your models never leave your device and no account is needed. AT A GLANCE • 8 file formats: STL, 3MF, OBJ, PLY, OFF, 3DS, GLB, glTF • Works fully offline, with no upload and no sign-up • Free: no subscription and no in-app purchase • No pop-up, timed or full-screen ads; at most one small banner • 17 languages, on iPhone and iPad VIEW IN AR AT REAL SIZE Place your model on a real desk or floor with AR Quick Look and see its true size before you print it. The camera is used only while AR is open. MEASURE AND ESTIMATE THE PRINT • Measure the distance between any two points, in millimetres • See dimensions, volume, surface area and triangle count • Print estimate: weight, filament length, print time and cost, by printer class, material (PLA, PETG, ABS, ASA, TPU, Nylon), layer height, infill and walls • Cut through the model with a section view CONVERT AND EXPORT TO STL Turn an OBJ, 3MF, PLY, OFF, 3DS, GLB or glTF model into a binary STL in millimetres, ready for any slicer. Every triangle of the source is kept, even when the on-screen preview is simplified. INSPECT EVERY DETAIL • Orbit, pan, zoom and fit to screen • Shaded or wireframe, perspective or orthographic • Front, back, left, right, top and bottom views from the view cube • Change the colour and the surface look: plastic, glossy, wood, stone or carbon SHARE • A rotating 360° GIF • A 9:16 video for stories • An STL copy, only when you choose WORKING WITH 3MF 3MF is the format most modern slicers save. STL Viewer reads the geometry inside a 3MF so you can check a part before printing, with real-world units from the file. Modifier meshes and negative volumes are left out, so you see the part itself. A 3MF that holds only print data, such as G-code, says so instead of opening empty. LOCAL AND PRIVATE Models are processed on your device. STL Viewer does not send model files, filenames, paths, geometry or dimensions to any cloud service, advertising provider or analytics platform. WHAT IT DOES NOT DO STL Viewer is for viewing, measuring, sharing and STL export. It does not edit, repair, slice or print models. Textures, materials and animations are not loaded. Native CAD formats (STEP, IGES, SOLIDWORKS, Fusion) need to be exported to STL, OBJ or 3MF first. QUESTIONS AND ANSWERS How do I open an STL file on iPhone or iPad? Tap Open file in STL Viewer, or choose STL Viewer from Open With or Share in the Files app. Is STL Viewer free? Yes. There is no subscription and no in-app purchase. At most one small banner appears after a model is ready. Does it work offline? Yes. Opening, measuring, AR and export all run on the device without an internet connection. Can I open a 3MF from Bambu Studio, PrusaSlicer or Cura? Yes. The part's geometry opens with its real units; print settings and plates are not read. Can I see an STL in AR at real size? Yes. Tap the AR button to place the model in your room at its real size. How do I measure an STL on iPhone? Open the model, tap the ruler, then Measure distance, and tap two points on the model. Can it estimate filament and print time? Yes. Print estimate shows weight, filament length, time and cost from the part's volume and your printer class, material and settings. It is an estimate, not a slicer result. How do I convert OBJ, 3MF or GLB to STL on iPhone? Open the model, tap Export, then Share as STL. How do I open a GLB or glTF file on iPhone? Open it like any other model. glTF files must keep their buffers embedded; use GLB if yours has a separate .bin file. Are my files uploaded anywhere? No. Models stay on your device.

Screenshots

LocBench4 screens
STL Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: STL Viewer at none against LocBench's 3. STL Viewer also leads on chart position (#148 vs unranked) and iOS requirement (15.0 vs 17.0). LocBench's advantage is ads (none vs shown). On price, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. LocBench sells 3 in-app purchases, starting at $1.99 per month. STL Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

LocBench ships an update every 3 days, STL Viewer every 5 days. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 3 level
LocBench versus STL Viewer: the parameters behind the verdict, then further details
ParameterLocBenchSTL Viewer
PriceFreeFree
Update frequencyEvery 3 days — betterEvery 5 days
AdsNo — betterYes
In-app purchasesYesNo — better
Best chart rank—#148 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size11 MB27 MB
Age rating4+4+
Developer校明 朱Alper Vural

In-app purchases

3 purchases

LocBench

Subscriptions2
  • LocBench Pro Monthly$1.991 Month
  • LocBench Pro Yearly$9.991 Year
One-time1
  • LocBench Pro Lifetime$19.99
None

STL Viewer

No in-app purchases

Questions

Is LocBench free?
LocBench is free to download, with in-app purchases available.
Is STL Viewer free?
STL Viewer is free to download, with no in-app purchases.
Do LocBench or STL Viewer have ads?
STL Viewer shows ads; LocBench does not.
Which is updated more often, LocBench or STL Viewer?
LocBench ships an update every 3 days, and STL Viewer every 5 days. Most recently, LocBench was updated on October 18, 2026 and STL Viewer on October 24, 2026.

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