Comparison

ChronoLog vs Pocket Docket

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

Head to head
About

ChronoLog

This app provides professional-grade tools to track the accuracy of mechanical watches. It offers audio timegraphing, photo offset measurement, and tap timing, along with detailed analytics and atomic time synchronization for collectors and enthusiasts.

Highlights
  • Audio timegrapher for rate, beat error, and amplitude
  • Photo offset measurement against atomic time
  • Tap timing for quick offset logging
  • Track accuracy trends over time
  • Atomic time synchronization
  • Detailed performance graphs and analytics
  • Manage and organize watch collection
Features
Read full description

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. ChronoLog logs every measurement into timing runs and charts the daily rate as you actually wear the watch: watch it drift, catch magnetization, and see when it needs regulation or a service — before it costs you minutes a week. • Photo offset: photograph the dial against atomic time for the most precise manual reading. • Tap timing: tap on the second for a quick log with any watch, quartz included. • Tag measurements by position, temperature or activity to learn what moves the rate. ACCURACY REPORT — NEW A health score for every watch, timekeeping trends per run, and an anonymous comparison against the same models worldwide — find out whether your Submariner or your SKX keeps time better than most. Share a private report link that expires on its own. ATOMIC TIME Every measurement is referenced to NTP atomic time, not your phone's clock. Use the live atomic clock, with an optional seconds tick, to set your watches to the second. YOUR COLLECTION, ORGANISED • Unlimited watches with photos, brand, model, calibre, serial number, service history and notes. • Wear log: swipe to mark what you're wearing, then see your rotation as a calendar, timeline and stats. • Moon phase: last and next full moon with the days between — set a moonphase complication in seconds. • Full backup and restore. CSV export for your records or your watchmaker. WHY COLLECTORS CHOOSE CHRONOLOG A timegrapher is for adjusting a watch. ChronoLog is for knowing it — clean, fast, ad-free, built by a collector in Boulder, Colorado, who reads and answers every review. Download ChronoLog and find out how your watches really run.

About

Pocket Docket

Features
Read full description

Pocket Docket is the fastest way for lawyers to track billable time — right from your pocket. Whether you're in court, on a call, or buried in documents, capture your time the moment you spend it. Start a timer with one tap and control it from your Lock Screen and Dynamic Island — no need to even open the app. At the end of the day, export a clean, client-ready timesheet in seconds. TRACK TIME INSTANTLY • One-tap timers you can pause, resume, and stop from the Lock Screen, Dynamic Island, and Home Screen widget • Time is docketed in standard 0.1-hour (6-minute) increments, rounded the way law firms bill • Continue a past entry right where you left off • Add manual entries anytime ORGANIZED BY MATTER • Group all your time and expenses by client matter • Save narrative templates ("Reviewing documents," "Drafting correspondence," and more) for one-tap descriptions • Log disbursements alongside your time KNOW YOUR NUMBERS • Set daily and weekly hour targets and watch your progress • See billable dollar totals per matter, per day, and per week • Per-entry rate tracking keeps historical billing accurate BILL IN SECONDS • Export polished PDF timesheets, grouped by day with fee and disbursement totals • Export CSV for your billing or accounting software • Filter by matter, date, or search before you export PRIVATE & IN SYNC • iCloud sync keeps your time on every device automatically • Lock the app behind Face ID, Touch ID, or your passcode Stop losing billable hours to forgotten time. Download Pocket Docket and capture every minute. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ChronoLog4 screens
Pocket Docket3 screens

Verdict

The call

The clearest difference is update cadence: ChronoLog at every 3 weeks against Pocket Docket's every 6 weeks. ChronoLog also leads on iOS requirement (15.0 vs 18.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ChronoLog sells 2 one-off in-app purchases and Pocket Docket sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChronoLog ships an update every 3 weeks, Pocket Docket every 6 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
ChronoLog versus Pocket Docket: the parameters behind the verdict, then further details
ParameterChronoLogPocket Docket
PriceFreeFree
Rating4.6 (233 ratings) — better—
Positive reviews85.0% of reviews—
Number of ratings233 — better—
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.6
Further details — not scored
Size50 MB3 MB
Age rating4+4+
Developertyler woodLucas Azzopardi

In-app purchases

2 purchases

ChronoLog

One-time2
  • Premium$5.99
  • Premium$6.99
1 purchases

Pocket Docket

One-time1
  • Lifetime Unlock$9.99

Questions

Is ChronoLog free?
ChronoLog is free to download, with in-app purchases available.
Is Pocket Docket free?
Pocket Docket is free to download, with in-app purchases available.
Do ChronoLog or Pocket Docket have ads?
Neither ChronoLog nor Pocket Docket shows ads.
Which is updated more often, ChronoLog or Pocket Docket?
ChronoLog ships an update every 3 weeks, and Pocket Docket every 6 weeks. Most recently, ChronoLog was updated on October 30, 2026 and Pocket Docket on October 28, 2026.

Other comparisons