Appworthy
App Store
Version 3.7.1 · 2026-09-21
Updated for iOS 27
App Store rating4.8★2.6K ratings
Price$0.99Listed price
Age4+Store age rating
Size16 MBiPhone download
CategoryUtilities
DeveloperDerek Spears
What we found
Full reportToo little checked to say Only 189 reviews read, too few to say.
Money
- $0.99 to download.
From our automated analysis, 24 Oct 2026.
This analysis describes version 3.7.1 of the app, analyzed 2026-10-24 .
The store currently lists version 3.7.1, updated 2026-09-21.
Preview
Store screenshots supplied by the developer.
About this app
An iPhone, Apple Watch and iPad app to see Local and Zulu time (GMT) or multiple time zones in a single glance. Includes Widgets for both the iPhone and Apple Watch. Useful for pilots in getting weather briefings and filing flight plans, or Ham radio operators to do timezone conversions. No more worrying about getting the timezone offset correct or Daylight Savings Time conversions. Easily convert from different time zones, including times in the future or past.
On the iPhone:
- Home and Lock Screen widgets
- The Zulu Time page gives a quick view of both Zulu and Local times
- The Offset Time page allows you to see Zulu and local time either in the future or past by entering an offset via the Offset button. Tapping either Zulu or Local times will allow you to enter a time in the future or past, synchronizing both Local and Zulu times with that offset.…
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
This assessment published no findings. That is a statement about what the evidence we had could show, not a clearance of the app.
What reviewers report
No review-based observation is published in this assessment. That does not establish that reviewers had no problems.
Measurements
“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
90% or more 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
This analysis describes version 3.7.1 of the app, analyzed 2026-10-24 .
The store currently lists version 3.7.1, updated 2026-09-21.
Store update history
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
Assessment record
- Status
- Automated analysis
- App identifier
zulu-time- Assessment date
- 24 Oct 2026
- Sources used
- 2 independent signals: user reviews and the store listing
- Reviews read
- 189
- Package examined
- No package scan
- Human inspection
- Not completed
Assessed 2026-10-24 from 189 user reviews and the store listing. 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 2026-10-24 Version analyzed: 3.7.12 independent signals189 reviews scannedConfidence: HighNot human-reviewedVocabulary v1.13Methodology v1.3
Signals run: user reviews and the store listing. Not yet checked: SDKs in the app package, the app's own on-screen text, the app manifest and the store privacy disclosure.
Store facts
What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
App Store
- Store rating
- 4.85 ★ · 2,609 ratings
- Version
- 3.7.1
- Updated
- 21 Sep 2026
- Price
- $0.99
- Age rating
- 4+
- Size
- 16 MB
- Developer
- Derek Spears
- Category
- Utilities
- Listing price
- $0.99
No itemized purchase list is available for this listing.
Method and limits
How the automated analysis works
This assessment is produced automatically. Two independent signals are read — user reviews and the store listing — 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 subscription bills weekly; 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.
Request a correction
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.