ServoSizer vs STEP Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ServoSizer
This application assists users in calculating and determining the appropriate size for servo motors. It provides essential data for engineering and design projects.
- Servo motor sizing
- Calculation tool
- Engineering data
- Design assistance
Read full descriptionHide full description
Servo Sizing Application
STEP Viewer
Read full descriptionHide full description
STEP Viewer opens STEP (.step, .stp) CAD files in 3D on your phone. No desktop CAD software needed. Everything is free. There are no in-app purchases. Credits only skip the ad; without credits you can still open every file after watching a short ad. Key features * Open .step and .stp files straight from your file manager - just tap the file * Measure your model: a bounding box with all three side lengths, in mm or m * Six fixed views (front, right, back, left, top, bottom), plus pinch to zoom, pan and rotate * Save the converted model as GLB whenever you need it * Large files show the estimated time and memory before conversion starts, and progress while it runs * If a file cannot be opened, the app tells you why instead of failing silently * Available in 12 languages, following your device settings Supported formats * Input: .stp, .step (STEP AP203, AP214) * Output: .glb (glTF Binary) How to use 1. Tap a .step file in your file manager, or open the app and tap the folder icon 2. Wait for the conversion - large files show progress and an estimate 3. Drag to rotate, pinch to zoom, tap the view button to switch sides License This app uses Open CASCADE Technology (LGPL-2.1). https://www.opencascade.com For questions or bug reports, please contact us by email.
Screenshots
Verdict
The clearest difference is iOS requirement: STEP Viewer at 13.0 against ServoSizer's 15.1. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | ServoSizer | STEP Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Kevin Schomaker | Smart Cube Labs Co., Ltd. |
In-app purchases
ServoSizer
No in-app purchases
STEP Viewer
No in-app purchases
Questions
Is ServoSizer free?
Is STEP Viewer free?
Do ServoSizer or STEP Viewer have ads?
Other comparisons
