Appworthy

ChronoLog • Watch Accuracy

Timegrapher & Collection Log

tyler wood
Download on theApp Store
App Store rating4.6★233 ratings
PriceFreeIn-app $5.99–$6.99
Age4+Store age rating
Size52 MBiPhone download
CategoryUtilities
Developertyler wood

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

  • Free to download · in-app purchases $5.99–$6.99 (2 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.

Not yet tested.

The store currently lists version 2.6.0, updated 2026-10-20.

Preview

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

Store screenshots supplied by the developer.

About this app

ChronoLog — Timegrapher, Watch Accuracy Tracker & Collection Log

Turn your iPhone into a timegrapher. ChronoLog listens to your mechanical watch through the microphone and reads its rate in seconds per day — then keeps measuring over days and weeks, on your wrist, so you know how the watch really runs, not just how it ran on the bench.

No subscription. No account. One-time purchase unlocks everything.

AUDIO TIMEGRAPHER

• Rate in seconds per day from your watch's tick, in about 30 seconds — the same number a timegrapher gives you.

• Every reading carries a confidence score, so you know when to trust it and when to record again.

• Movements from 18,000 to 36,000 bph, detected automatically or set per watch.

ACCURACY OVER TIME — THE PART A TIMEGRAPHER CAN'T DO

A bench reading captures one moment.…

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

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

4 measured · 4 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
Not assessed
This app's reviews have not been assessed yet
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

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

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

App Store

Version 2.6.0 · 2026-10-20
Accuracy Report • A health score for every watch, timekeeping trends by timing run, and an anonymous comparison against the same models worldwide. • Open it from the Info tab or from any watch. Share a private link that expires on its own. • Your watch photos now appear in the report. Timegrapher • Every audio reading now shows a confidence score, so you know when to trust it. • Clearer per-run detail in audio results. Moon phase • Last and next full moon with days since and until — the numbers you set a moonphase complication from. • The moon is now drawn correctly in light mode and for your hemisphere. Fixes • Clear error messages when the camera or cropper fails. • Photo measurements…

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

Assessment record

Status
Not yet tested
App identifier
chronolog-watch-accuracy
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

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
4.62 ★ · 233 ratings
Version
2.6.0
Updated
20 Oct 2026
Price
Free · In-app purchases
Age rating
4+
Size
52 MB
Open in App Store
Developer
tyler wood
Category
Utilities
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 2 more purchases we couldn’t categorise

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

PremiumTerm not stated$5.99
PremiumTerm not stated$6.99

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

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 human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

Request a correction

[email protected]

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.

Report a factual error — free Email a correction