Carnets vs FastLabel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Carnets
This app offers a standalone Jupyter notebook environment for creating and running code snippets, combining them with text and Markdown. It includes pre-installed scientific packages and allows for offline use, making it ideal for education and research.
- Standalone Jupyter notebook implementation
- Embedded Python interpreter
- Offline functionality
- Pre-installed scientific packages
- Supports Jupyterlab
- Package installation via %pip
- Notebook sharing and opening
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Jupyter notebooks are a powerful tool used in education and research. You can write small snippets of Python code and observe the result on screen, combine with paragraphs of text, using Markdown. Carnets provides a complete, stand-alone, implementation of Jupyter notebooks. Everything runs on your device, using the embedded Python interpreter; you do not need an internet connection. You can chose between Jupyter notebooks and the more advance Jupyterlab using Settings. Numpy, Sympy, Matplotlib, Pandas, lxml, bokeh, nbextensions (including ipywidgets) and many other packages are pre-installed. To see the full list of installed packages, type "%pip list" in a code window. You can add more packages using "%pip install packageName", but only if they are pure Python. If you need scipy, seaborn or scikit-learn, please use our other App, "Carnets - Jupyter (with scipy)". You can share your notebooks with other apps and also open notebooks or directories managed by other apps. Partial list of installed packages: astropy, babel, bokeh, cryptography, cvxopt, Fiona, geopandas, geopy, lxml, matplotlib, numpy, openCV, pandas, pillow, pyFFTW, pyproj, rasterio, regex, shapely, sympy, wordcloud.
FastLabel
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FastLabel is the fastest way to label image datasets on your iPhone. Import a ZIP with images, define your labels, and start labeling instantly. Designed for speed and simplicity, FastLabel lets you go through large datasets quickly with a smooth, one-by-one workflow. Features: • Import images from ZIP files (JPG, PNG, JPEG) • Fast, focused labeling experience • Simple label set creation • Overview of all images in a grid • Continue where you left off • Export labels as JSON, CSV, or JSONL • Optionally export images together with labels Perfect for: • Machine learning datasets • Computer vision projects • AI training data preparation • Quick annotation tasks on the go All data stays on your device. No accounts, no uploads, no tracking.
Screenshots
Verdict
The clearest difference is update cadence: Carnets at monthly against FastLabel's every 4 months. Carnets also leads on chart position (#107 vs unranked) and iOS requirement (14.0 vs 26.2). 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.
Carnets ships an update monthly, FastLabel every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Carnets | FastLabel |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (321 ratings) — better | — |
| Positive reviews | 78.4% of reviews | — |
| Number of ratings | 321 — better | — |
| Update frequency | Monthly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #107 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 1.4 GB | 7 MB |
| Age rating | 17+ | 4+ |
| Developer | Nicolas Holzschuch | Lukas Paul Hering |
Bugs and requests
Carnets
Reported bugs
4 issues- Crashes and freezes
- Issues with saving and loading notebooks
- Problems with running scripts and notebooks
- Incompatibility with newer iOS versions
Requested features
5 requests- Add support for SciPy, Scikit-learn, and other scientific computing libraries
- Improve file management and integration with cloud storage services
- Implement split-screen or multi-window support
- Add more keyboard shortcuts and customization options
- Improve error handling and provide more detailed error messages
FastLabel
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Carnets
No in-app purchases
FastLabel
No in-app purchases









