Comparison

VoltaRocks vs Time Zone Buddy

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

Head to head
About

VoltaRocks

Features
Read full description

VoltaRocks is your ultimate energy-saving companion. Take control of your home's energy consumption, track savings, and discover actionable tips to reduce costs. Access real-time data, find the best energy plans, and unlock rebates and grants to make your home more sustainable. Join the VoltaRocks community and be a part of the clean energy revolution!

About

Time Zone Buddy

Easily track multiple world times and plan meetings across different zones. Features a visually appealing aurora-inspired design and intelligent zone cards with daylight status and holiday alerts. Offers a time-shift slider for future planning and a meeting hub for real-time collaboration insights.

Highlights
  • Aurora-inspired daylight-aware design
  • Time-shift slider for future planning
  • Meeting Hub with live dashboard
  • Intelligent zone cards with alerts
  • Drag-to-reorder functionality
  • Widgets for Home and Lock Screen
  • DST and public holiday notifications
Features
Read full description

Time Zone Buddy is a beautiful world clock and meeting planner for people who work, travel, or collaborate across time zones. Whether you're scheduling a call with Tokyo, checking if London is still in the office, or planning a meeting across five time zones โ€” it makes the world easy to read. TRAVEL MODE โ€” HOME & AWAY Pin your Home city so its time, public holidays, and clock changes are always close โ€” free, on every tier. When your device changes time zone, an automatic Away card appears beside Home, so the time back home is one glance. The Home & Away widget shows Home on your Home Screen, then switches to a Home | Here view while you travel, with daylight and the next sunrise or sunset where you've landed. DAYLIGHT AT A GLANCE Open a city and its sky fills the screen โ€” deep night, golden hour, or mid-afternoon, from that city's own sunrise and sunset. Every card changes with the sun, live. TIME SHIFT & PLANNING A docked time-shift slider lives at the bottom of every tab. Pick a future date and time, choose which zone you're planning from, and instantly see what time it will be everywhere. MEETING HUB See who's in work hours now, who's coming online soon, overlap at a glance, and upcoming DST and holiday alerts. Tap "Plan a Meeting" for a full multi-zone overlap analysis. INTELLIGENT ZONE CARDS Each zone card shows local time, UTC offset, daylight status, work hours, DST alerts, and today's public holiday (Plus/Lifetime). DETAIL THAT DELIGHTS Tap any zone for the sky over that city right now, a daylight bar, hour-by-hour time comparison, DST and holiday alerts, and an exportable share card. "Best Time to Call" shows the clearest call time between you and that city, free. SEARCH YOUR WAY Search by city, country, or region. Type "Australia" for all Australian zones, or "NYC" / "EST" to jump straight there. GROUPS & ORGANISATION (PLUS/LIFETIME) Create named groups for your team, family, or travel contacts. Collapse and expand on the home screen. Share a group's times as an image. MEETING OVERLAP (PLUS/LIFETIME) Find the best time to meet across any set of time zones. Options are ranked so the cost is shared rather than landing on one person, and split into Best, other options, and your picks. Share as an image or plain text. WIDGETS & STANDBY Put the world on your Home Screen, Lock Screen, or bedside. โ€ข Home & Away (free) โ€” Home at a glance; switches to Home | Here when you travel โ€ข Multi-City Clock โ€” a "wall of clocks"; 2 cities free, up to 6 with Plus/Lifetime โ€ข Single Zone (free) โ€” any city's live time, daylight-shaded โ€ข Lock Screen clocks โ€” circular free; inline & rectangular Plus/Lifetime โ€ข Meeting Hub (Plus/Lifetime) โ€” who's working now across your zones โ€ข StandBy (free) โ€” a dimmable bedside clock while charging DST ALERTS & NOTIFICATIONS (PLUS/LIFETIME) Get notifications 7 days before a clock change, the business day before, the day itself, and the day after. PUBLIC HOLIDAYS (PLUS/LIFETIME) Today's public holiday on every zone card, with a banner in the detail view and a full year view per zone. 80+ countries, state-level for AU, UK, CA, US, and BR. Powered by Nager.Date. NATIVE SHORTCUTS & QUICK ACTIONS โ€ข Long-press the icon for Plan Meeting, Add Zone, or Show Alerts โ€ข Siri + Spotlight + Shortcuts: "Hey Siri, plan a meeting in Time Zone Buddy" ACCESSIBILITY Full VoiceOver support, Dynamic Type, and Reduce Motion respected throughout. PRIVACY FIRST No account required. Your saved cities, groups, and preferences stay on-device unless you enable private iCloud sync (Plus). No ads or tracking. PRICING โ€ข Free โ€” up to 5 zones, daylight-aware cards, time shift planner, Best Time to Call, free widgets โ€ข Lifetime โ€” one-time purchase, all features unlocked forever, including Lock Screen & Meeting Hub widgets (except iCloud Sync) โ€ข Plus โ€” subscription with iCloud Sync, Annual-plan Family Sharing, and early access Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

VoltaRocks4 screens
Time Zone Buddy4 screens

Verdict

The call

The clearest difference is in-app purchases: VoltaRocks at none against Time Zone Buddy's 3. VoltaRocks also leads on iOS requirement (13.0 vs 26.2). Time Zone Buddy's advantage is update cadence (every 10 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Time Zone Buddy sells 3 in-app purchases, starting at $1.99 per month. VoltaRocks asks for nothing beyond the download.

UpkeepUpdate frequency

VoltaRocks ships an update every 3 weeks, Time Zone Buddy every 10 days. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

Scorecard3 real differences ยท 5 level
VoltaRocks versus Time Zone Buddy: the parameters behind the verdict, then further details
ParameterVoltaRocksTime Zone Buddy
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 3 weeksEvery 10 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
Monetizationโ€”Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 โ€” better26.2
Further details โ€” not scored
Size63 MB15 MB
Age rating4+4+
DeveloperL.O.L. Consultants Pty LtdScott Breen

In-app purchases

None

VoltaRocks

No in-app purchases

3 purchases

Time Zone Buddy

Subscriptions2
  • Plus Monthly7 Days trial$1.991 Month
  • Plus Annual7 Days trial$9.991 Year
One-time1
  • Time Zone Buddy Lifetime$24.99

Questions

Is VoltaRocks free?
VoltaRocks is free to download, with no in-app purchases.
Is Time Zone Buddy free?
Time Zone Buddy is free to download, with in-app purchases available.
Do VoltaRocks or Time Zone Buddy have ads?
Neither VoltaRocks nor Time Zone Buddy shows ads.
Which is updated more often, VoltaRocks or Time Zone Buddy?
VoltaRocks ships an update every 3 weeks, and Time Zone Buddy every 10 days. Most recently, VoltaRocks was updated on October 1, 2026 and Time Zone Buddy on October 11, 2026.

Other comparisons