Comparison

Carnets vs PeterJohn NumPy Matplotlib

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

Head to head
About

Carnets

This app offers a full Jupyter notebook experience on your device, ideal for education and research. It includes scientific computation packages like SciPy and scikit-learn, allowing you to write and run Python code offline. Notebooks can be shared and opened from other applications.

Highlights
  • Offline Jupyter notebook execution
  • Includes SciPy, scikit-learn, and Seaborn
  • Embedded Python interpreter
  • Markdown support for text
  • Package management with %pip
  • Notebook sharing and import
Features
Read full description

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. Compared to the standard version (Carnets), this app adds several packages targeted for scientific computation and learning: scipy, sklearn, seaborn and coremltools. You can switch between standard notebooks and the more modern jupyterlab using the Settings app. Of course, all the packages included with the standard app are present too: numpy, simply, matplotlib... 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. 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, cartopy, cryptography, cvxopt, Fiona, geopandas, geopy, gym, inequality, libpysal, lxml, mapclassify, matplotlib, networkx, nltk, numpy, openCV, pandas, parso, pillow, pyFFTW, pyproj, qutip, rasterio, regex, Rtree, scikit-learn, scipy, seaborn, segregation, shapely, soupsieve, spopt, statsmodels, sympy, wordcloud.

About

PeterJohn NumPy Matplotlib

This Python interpreter for iPhone allows you to study data science, deep learning, and reinforcement learning using NumPy and Matplotlib. It provides a user-friendly interface with tutorials and scripts to get started quickly.

Highlights
  • Python interpreter for iPhone
  • Includes NumPy module
  • Includes Matplotlib module
  • Study data science, deep learning, reinforcement learning
  • Tutorials and example scripts
  • Run Python scripts
Features
Read full description

Now PeterJohn, a Python Interpreter which Runs on iPhone,   Acquired Two Major Modules, NumPy and Matplotlib. they will help you to study  DataScience, DeepLearning, ReinforcementLearning. it's like King Jesus sent twelve disciples out two by two. **Mark 6:7;12-13, GNT 6:7 He called the twelve disciples together and sent them out two by two. He gave them authority over the evil spirits. 6:12 So they went out and preached that people should turn away from their sins.  6:13 They drove out many demons, and rubbed olive oil on many sick people and healed them. **** How to Use it; 1) First, Touch "Add Tutorial" at the BottomLeft of ProjectsView. 2) Touch "TutorialSeason006" at ProjectsView. 3) Choose One of Four at ScriptsView. s001PILimageFontTest.py; This doesNot use Matplotlib but uses only Matplotlib TTF(TrueTypeFonts). s002matplotlibPltPlot.py s003matplotlibPltLegend.py s004BarChartOnPolarAxis.py 4) Touch "RunScript" at the TopRight of EditScriptView. 5) Only for the first time, the warning that "AppleMetal Cache Directory doesNot Exist" appears, Once needs to go back to EditScriptView, and then touch "RunScript" at the TopRight of EditScriptView Again. 6) the script is Executed at RunScriptView. **** Enjoy NumPy, Enjoy Matplotlib Enjoy DataScience, DeepLearing, ReinforcementLearing. Enjoy PeterJohnNumPyMatplotlib --Yasushi Yassun Obata

Screenshots

Carnets4 screens
PeterJohn NumPy Matplotlib4 screens

Verdict

The call

The clearest difference is review sentiment: Carnets at 82% against PeterJohn NumPy Matplotlib's 0%. Carnets also leads on price (Free vs $12.99). PeterJohn NumPy Matplotlib's advantage is update cadence (every 2 weeks vs every 6 weeks). On ads, in-app purchases, 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

CostPrice · In-app purchases · Ads · Monetization

Carnets is free to download; PeterJohn NumPy Matplotlib costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Carnets ships an update every 6 weeks, PeterJohn NumPy Matplotlib every 2 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
Carnets versus PeterJohn NumPy Matplotlib: the parameters behind the verdict, then further details
ParameterCarnetsPeterJohn NumPy Matplotlib
PriceFree — better$12.99
Rating4.6 (87 ratings) — better—
Positive reviews81.5% of reviews — better0.0% of reviews
Number of ratings87 — better—
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size2.1 GB222 MB
Age rating17+4+
DeveloperNicolas HolzschuchYasushi Obata

Customer experience

Carnets

All ratings87 ratings
Positive88.5%
Neutral5.7%
Negative5.7%
Written reviews146 reviews
Positive81.5%
Neutral9.6%
Negative8.9%

PeterJohn NumPy Matplotlib

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Carnets

Reported bugs

3 issues
  • Unable to create new notebooks
  • Incompatible with older iOS versions
  • Line breaking issues with external keyboard

Requested features

5 requests
  • Add support for Tensorflow, XGBoost, LightGBM
  • Enable running code in .py files
  • Improve stability and performance
  • Add support for R kernel
  • Provide better file management options

PeterJohn NumPy Matplotlib

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Carnets

No in-app purchases

None

PeterJohn NumPy Matplotlib

No in-app purchases

Questions

Is Carnets free?
Carnets is free to download, with no in-app purchases.
Is PeterJohn NumPy Matplotlib free?
PeterJohn NumPy Matplotlib costs $12.99, with no in-app purchases.
Do Carnets or PeterJohn NumPy Matplotlib have ads?
Neither Carnets nor PeterJohn NumPy Matplotlib shows ads.
Which is updated more often, Carnets or PeterJohn NumPy Matplotlib?
Carnets ships an update every 6 weeks, and PeterJohn NumPy Matplotlib every 2 weeks. Most recently, Carnets was updated on October 14, 2026 and PeterJohn NumPy Matplotlib on October 7, 2026.

Other comparisons