Comparison

World Time Clock Master vs Power Planner

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

Head to head
About

World Time Clock Master

Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.

Highlights
  • Multiple time zone display
  • Interactive time conversion
  • Event scheduling
  • Atomic time accuracy
  • Dynamic home screen widgets
  • List mode for text view
  • Real moon phases and sunrise/sunset
Features
Read full description

THE EASIEST WAY TO DEAL WITH MULTIPLE TIMEZONES + INTERACTIVE WIDGETS Sick of screwing up meeting times and missing calls? This app cuts through time-zone confusion and hands you the perfect hour at a glance. Forget guesswork — just click, connect, and impress. KEY FEATURES EVENT SCHEDULING MADE EASY Found the perfect meeting time? Add events to your calendar with just a tap, and never miss an international webinar, call, or special moment again. ATOMIC ACCURACY No drift, no guesswork. Each second syncs with the atomic standard, so you can trust every moment. Extensive Time Zone Database: Tap into over 160,000 locations and time zones including GMT, UTC, and more. UNIFIED CLOCK FACE View all your essential time zones at a glance on one beautifully designed, customizable clock face. Whether you prefer digital or analog displays (or even military time), everything is exactly where you need it. INTERACTIVE TIME CONVERSION Convert times instantly by simply twisting or swiping across the clock face. Watch as your selected time zones update in real time—making planning international calls, meetings, or travel effortless. DYNAMIC WIDGETS Access global times without even opening the app. Our interactive home screen widget lets you drag a simple line to reveal and convert times, ensuring you’re always in sync no matter where you are. LIST MODE Get a clean, text-based view of all your cities in one column. See times and dates at a glance, and scroll to check future or past hours. It’s a no-fuss way to track the world’s clocks. FEELS LIKE A LUXURY TIMEPIECE We poured effort into details most people never notice — and we’re okay with that. Our users aren’t “most people.” Details include: — Real Moon Phases — Real Moon Rotation — Real Sunrise & Sunset — Advanced City Lights — Haptic Feedback * * * World Clock Master offers a premium subscription: Subscribe to get access to unlimited timezones, interactive widgets, customizations, and timely automatic updates of our timezone database of more than 160,000 locations and timezones. – Length of subscription: 1 month or 1 year – Payment will be charged to iTunes Account at confirmation of purchase – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable – Terms & Conditions: https://timemaster.s3.amazonaws.com/Time-master-terms.pdf

About

Power Planner

Features
Read full description

Power Planner sizes generators and builds complete power plans for events, construction sites, off-grid camps, and field operations. Every other tool gives you a flat wattage guess. Power Planner gives you a real bill of materials: the generator size, the fuel, the leads, the distribution boxes - and what happens when something fails. TWO MODES POWER PLANNER — Have a generator? Add your appliances and instantly see load percentage, surge headroom, and fuel burn. Perfect for camping, caravans, tradies, and home blackout backup. POWER PLANNER PRO — Need power for an event or site? Add your equipment and get told what to hire or bring: • Three-tier load model: connected load, realistic demand load (duty cycles), and design load with a 25% safety buffer • Generator recommendations from standard commercial sizes (8–1000 kVA), including dual-unit redundancy options • Multi-generator planning: assign equipment to zones, balance three-phase loads, and see per-unit utilisation • Fuel logistics: burn rates, daily and total litres, jerry cans, drums, and resupply runs • Distribution kit: lead counts by plug type (10A / 15A / 32A / hardwired), distro boxes, and cable estimates • Load priority tagging (Critical / Essential / Deferrable) with an automatic load-shedding plan if a generator fails • Recommended startup sequence to manage motor surge • Generator service schedule tracking with hour meters • Cost estimation and quote builder for hire companies • CSV equipment import, PDF plan export, shareable plans Scenario presets get you started fast: events and festivals, construction sites, accommodation and camps, and more. A Field Ops template pack for defence and government logistics users is available via access code (see the About screen). BUILT FOR THE FIELD Power Planner works 100% offline. No account, no sign-in, no cloud, no data collection — your plans stay on your device. Use it in a paddock, a basement, or anywhere else the job takes you. IMPORTANT Power Planner produces planning estimates only. All power configurations must be verified by a qualified licensed electrician before implementation.

Screenshots

World Time Clock Master4 screens
Power Planner4 screens

Verdict

The call

The clearest difference is in-app purchases: Power Planner at none against World Time Clock Master's 13. Power Planner also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads 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. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Power Planner asks for nothing beyond the download.

UpkeepUpdate frequency

World Time Clock Master ships an update fortnightly, Power Planner every 3 weeks. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
World Time Clock Master versus Power Planner: the parameters behind the verdict, then further details
ParameterWorld Time Clock MasterPower Planner
PriceFreeFree
Rating4.6 (816 ratings) — better—
Positive reviews65.8% of reviews—
Number of ratings816 — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, Vision Pro — betteriPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size236 MB7 MB
Age rating4+4+
DeveloperAlex Komarov Inc.Matthew Bennett

Bugs and requests

World Time Clock Master

Reported bugs

4 issues
  • Lose all the registered locations after updating the app
  • Sticky signup interface
  • Widget doesn't work
  • GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time

Requested features

4 requests
  • Add the time difference in hours between the default location and other locations in both the widget and the app
  • See my calendar events on the dial
  • Make a paid tier that doesn't collect my data
  • Add new event to a Calendar

Power Planner

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

World Time Clock Master

Subscriptions6
  • 1 month3 variants$2.991 Month
  • 3 months$3.993 Months
  • 1 year1 Year trial2 variants$11.991 Year
Show 3 more
  • 1 year3 Days trial$11.991 Year
  • 1 year$11.991 Year
  • 1 year3 Days trial$19.991 Year
One-time4
  • Lifetime$29.99
  • Lifetime$49.99
  • Lifetime$79.99
Show 1 more
  • Lifetime$99.99
None

Power Planner

No in-app purchases

Questions

Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Is Power Planner free?
Power Planner is free to download, with no in-app purchases.
Do World Time Clock Master or Power Planner have ads?
Neither World Time Clock Master nor Power Planner shows ads.
Which is updated more often, World Time Clock Master or Power Planner?
World Time Clock Master ships an update fortnightly, and Power Planner every 3 weeks. Most recently, World Time Clock Master was updated on October 12, 2026 and Power Planner on October 9, 2026.

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