Appworthy

Juno – Python and Jupyter

Notebook & script IDE with AI

Rational Matter
Download on theApp Store
App Store rating4.6★1.1K ratings
PriceFreeIn-app $39.99
Age4+Store age rating
Size693 MBiPhone download
CategoryLifestyle
DeveloperRational Matter

What we found

Full report

Too little checked to say Only 118 reviews read, too few to say.

Money

  • Free to download · in-app purchases $39.99 (1 listed). The store doesn’t say how often these bill.
  • If you subscribe through the store, cancel in iPhone Settings → your name → Subscriptions. Deleting the app doesn’t cancel a subscription.

From our automated analysis, 30 Oct 2026.

This analysis describes version 4.2.2 of the app, analyzed 2026-10-30 .

The store currently lists version 4.2.2, updated 2026-08-23.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

Zero-setup Python IDE that runs your code offline, an AI coding assistant, and a developer toolbox — in a first-class citizen app for iPad and iPhone.

Juno is designed to cover all your Python coding needs, supporting both Python scripts (.py) and Jupyter notebooks (.ipynb) — a document format focused on applying Python to data analysis and computational science.

FREE FEATURES

- Navigate and manage files and folders, quickly preview documents and media

- Browse and edit Jupyter notebooks in a powerful, customizable notebook editor with beautifully rendered previews — editing is free

- Write and edit code sources, scripts, JSON, XML, and other text-based formats — one versatile editor for code and text alike, with syntax highlighting

- Add quick access bookmarks for file system locations outside the app's sandbox, or simply open documents in place

PRO FEATURES…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

0 published · 1 shown, not confirmed

One source only — shown, not confirmed 1

Open observations that have not cleared the evidence bar.

Usable without an account

One source only

The store privacy disclosure (2 entries) links no contact details or identifiers to the user — consistent with an app that does not require an account. Self-reported by the developer.

Sources
The store privacy disclosure
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From the App Store privacy disclosure

This observation has not cleared the required evidence standard.

Definition

The app's own screens offer a way past sign-up — guest access, skipping, or browsing before registering — rather than gating the product behind an account. The store's privacy disclosure is checked alongside it: that disclosure is self-reported, so it corroborates this credit rather than establishing it.

Open evidence

Nothing was published as a thing to watch for in this assessment. That is not a finding that nothing is wrong with the app.

What reviewers report

118 reviews read · 0 review-based observations

No review-based observation is published in this assessment. That does not establish that reviewers had no problems.

Measurements

5 measured · 3 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Replies to fewer than 1 review in 20
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
No theme reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
80–89% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Assessed 30 Oct 2026

This analysis describes version 4.2.2 of the app, analyzed 2026-10-30 .

The store currently lists version 4.2.2, updated 2026-08-23.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 4.2.2 · 2026-08-23
What's New in Juno 4.2: THE PACKAGE MANAGER, REWORKED – Install a package and Juno works out everything else it needs, shows you the plan, and installs the whole set. – Point it at a project's requirements.txt and it does the same for every package the project needs. – Package pages are rebuilt around the project's README, its versions, and what's installed on your device. – Browse popular packages, see when updates are available, and tidy up dependencies left behind when you uninstall. MORE AI PROVIDERS – Use OpenRouter, DeepSeek, Together, or Groq, or point Juno at any OpenAI-compatible endpoint — including a model server running on your own network. – Some providers now let you sign in…

Shortened here; the full notes are on the store listing.

Assessment record

Status
Automated analysis
App identifier
juno-apple-1462586500
Assessment date
30 Oct 2026
Sources used
3 independent signals: user reviews, the store listing and the store privacy disclosure
Reviews read
118
Package examined
No package scan
Human inspection
Not completed

Assessed 2026-10-30 from 118 user reviews, the store listing and its privacy label. We have not scanned the app's package, so nothing on this page was read from inside the app itself.

How we know
Measurement vocabulary
1.4

How this page was produced

Analyzed 2026-10-30 Version analyzed: 4.2.23 independent signals118 reviews scannedConfidence: HighNot human-reviewedVocabulary v1.14Methodology v1.3
Signals run: user reviews, the store listing and the store privacy disclosure. Not yet checked: SDKs in the app package, the app's own on-screen text and the app manifest.

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.59 ★ · 1,084 ratings
Version
4.2.2
Updated
23 Aug 2026
Price
Free · In-app purchases
Age rating
4+
Size
693 MB
Open in App Store
Developer
Rational Matter
Category
Lifestyle
Listing price
Free · In-app purchases

Purchases the store lists

 What this app sells

From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.

Show 1 more purchase we couldn’t categorise

These are really on sale; we just can’t tell from the name whether they recur.

Juno Pro UnlockTerm not stated$39.99

Method and limits

What this report can and cannot show

How the automated analysis works

This assessment is produced automatically. Three independent signals are read — user reviews, the store listing and the store privacy disclosure — and each candidate finding is filed under the sources that support it.

No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every recurring plan the store lists is named as weekly, the term read from the purchase names, with a list cut off at the store’s 10-item maximum not assessed; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.

There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.

Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A hands-on test can confirm or contradict a finding and adds its own measurements; it does not change a measurement row. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

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