Python Code Editor & IDE vs STL Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Python Code Editor & IDE
This application provides a full Python 3 development environment on mobile devices. It allows users to code, run, debug, and learn Python with a real interpreter, standard library, and support for popular packages. It's ideal for learning, data science, and project development on the go.
- Embedded Python 3 interpreter
- Offline coding and execution
- Full Python debugger
- Pip package installation
- Interactive REPL and pytest support
- 100 Python lessons and challenges
- Data science tools
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Code, run, debug, and learn Python on your iPhone or iPad with a real Python 3 IDE. Python Code Editor & IDE gives you a genuine embedded Python 3 interpreter, full standard library, local execution, offline coding, debugging, pip packages, projects, testing, data science tools, and Python lessons. No server or account required to run your Python code. ▸ REAL PYTHON 3 — RUN OFFLINE • Embedded Python 3 interpreter and standard library • Run Python locally and offline • Live console output and interactive input() • Inline Matplotlib charts ▸ DESKTOP-CLASS PYTHON CODE EDITOR • Multi-tab editor and split view • Python syntax highlighting • Autocomplete and code completion • Hover information and code insights • Find and replace • Outline and symbol search • Go to definition • Problems panel • Code snippets • Format and lint on save • Keyboard shortcuts ▸ PYTHON DEBUGGER • Breakpoints and conditional breakpoints • Step in, step over, step out • Locals, watches, and call stack • Expression evaluation • Break on exception ▸ REPL & PYTEST • Interactive Python REPL • Resettable namespace • Run pytest tests • Support for test_*.py ▸ PYTHON PACKAGES WITH PIP Use popular Python libraries on iPhone and iPad: • NumPy • pandas • Matplotlib • SciPy • scikit-learn • SymPy • seaborn • Requests • Flask • BeautifulSoup • PyYAML • pytest • autopep8 ▸ REAL PYTHON PROJECTS • Open folders as project roots • Multi-file Python projects • Import from Files, iCloud, or Drive • Project search • ZIP import and export • Run configurations, arguments, and environment variables ▸ LEARN PYTHON BY CODING • 100 Python lessons • 84 coding challenges • Easy, Medium, and Hard • Worked solutions and progress tracking • 18 examples and 25 standard-library modules • Learn Python, NumPy, pandas, Matplotlib, SciPy, and scikit-learn ▸ DATA SCIENCE Use Python for data analysis, scientific computing, visualization, and machine learning with NumPy, pandas, Matplotlib, SciPy, seaborn, SymPy, and scikit-learn. ▸ SSH & SFTP • Saved SSH profiles • Password or key auth • SFTP upload • One-tap re-upload ▸ PERSONALIZE YOUR EDITOR • Dark and light themes • 5 code themes • Adjustable font and tab size ▸ FAQ Q: Can I run Python offline? A: Yes. The interpreter, editor, debugger, lessons, challenges, and examples run on your device. Internet is only needed for online features such as pip installation and SFTP uploads. Q: Is this a real Python 3 interpreter? A: Yes. It uses embedded CPython 3 with the standard library. Your code runs locally, not on a remote server. Q: Can I run NumPy, pandas, and Matplotlib? A: Yes. Supported scientific packages include NumPy, pandas, Matplotlib, SciPy, seaborn, SymPy, and scikit-learn. Q: Can I install packages with pip? A: Yes. Pro users can install compatible packages with pip. Pure-Python packages generally work; native packages require compatible mobile wheels. Q: Does it include a Python debugger? A: Yes. Use breakpoints, step debugging, locals, watches, call stack, expression evaluation, and exception handling. Q: Can I build multi-file Python projects? A: Yes. Open folders as projects, work with multiple Python files, search projects, import/export ZIP files, and configure how projects run. Q: Can I learn Python from scratch? A: Yes. The app includes 100 lessons, 84 coding challenges, examples, worked solutions, and progress tracking. Q: Is my code private? A: Your code runs locally and is not uploaded to our servers. Files leave your device only when you choose to share or upload them. Q: What is free and what requires Pro? A: Free includes a working Python environment, core coding, tutorials, challenges, and examples. Pro adds unlimited projects and files, unlimited packages, the debugger, and run configurations. Write. Run. Debug. Learn Python anywhere — online or offline. Privacy Policy: https://koderead.com/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
STL Viewer
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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
Verdict
The clearest difference is rating: Python Code Editor & IDE at 5.0 against STL Viewer's 4.0. Python Code Editor & IDE also leads on ads (none vs shown) and ratings volume (3 vs 1). STL Viewer's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs every 3 weeks). On price, device support and iOS requirement 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. Python Code Editor & IDE sells 2 in-app purchases, starting at $3.99 per 7 days. STL Viewer asks for nothing beyond the download.
Python Code Editor & IDE holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Python Code Editor & IDE ships an update every 3 weeks, STL Viewer every 5 days. Both last shipped on October 31, 2026.
| Parameter | Python Code Editor & IDE | STL Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | #178 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 385 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | KODEREAD SOLUTIONS LLP | Alper Vural |
In-app purchases
Python Code Editor & IDE
- Python Editor Pro Weekly Plan$3.997 Days
- Python Editor Pro Yearly Plan3 Days trial$34.991 Year
STL Viewer
No in-app purchases
Questions
Is Python Code Editor & IDE free?
Is STL Viewer free?
Which has better reviews, Python Code Editor & IDE or STL Viewer?
Do Python Code Editor & IDE or STL Viewer have ads?
Which is updated more often, Python Code Editor & IDE or STL Viewer?
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