Oceanodesy vs World Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oceanodesy
This utility app converts between geodetic and grid coordinate systems. It supports various units for latitude, longitude, and grid coordinates, along with multiple datums and projections for accurate geospatial transformations.
- Geodetic to grid coordinate conversion
- Grid to geodetic coordinate conversion
- Multiple latitude/longitude formats (DD, DMM, DMS)
- Multiple grid coordinate units (US Feet, Intl Feet, Meters)
- Support for multiple datums (WGS84, NAD27, NAD83, etc.)
- Support for multiple projections (UTM, SPCS27, SPCS83)
- Store and export projected coordinates
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Oceanodesy projects and inverses between geodetic coordinates (latitude and longitude) and grid coordinates (easting and northing). Latitude and longitude coordinates are accepted and displayed in Decimal Degrees (DD.dd), Decimal Minutes (DD MM.mm), and Decimal Seconds (DD MM SS.ss). Grid coordinates are accepted and displayed in US Feet, International Feet, and Meters. Projected coordinates can be stored for later reference or export. Available Datums: - World Geodetic System 1984 (WGS84) - North American Datum 1927 (NAD27) - North American Datum 1983 (NAD83) - Sistema de Referencia Geocentrico para las AmericaS 2000 (SIRGAS2000) - Indian 1975 Datum - Hartebeesthoek 1994 Datum - European Datum 1950 Available Projections: - Universal Transverse Mercator (UTM) - State Plane Coordinate System 1927 (SPCS27) - State Plane Coordinate System 1983 (SPCS83)
World Clock
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Pin your cities once. Slide time forward or back. See the whole world's clock at a glance. Instantly know who's awake, what day it is for them, and when a moment works for everyone. WHAT YOU GET — Time shift scrubber: drag up to ±12 hours in 15 min, 30 min, or 1 hr steps — Find Best Time: jump straight to the next window when everyone's awake — Flags, local times, UTC offsets, and timezone names for every city — Day/night indicator so you can see at a glance who's asleep — Tomorrow/yesterday badge when a city's date differs from yours — Tap any city's time to copy it to clipboard — One-tap share of the current shifted moment across all your cities, or as an image card — City search from a worldwide database — Reorder and remove cities freely — Dark mode, light mode, 12-hour or 24-hour clock PRIVATE BY DEFAULT Your city list lives on your device. Works offline. No account needed. TimeShift Pro is a one-time purchase, no subscription: unlimited cities (free stays at 12), four premium accent themes, unlimited Find Best Time searches, Share as Card, and two alternate app icons. Built for remote workers, founders, frequent travelers — anyone juggling more than one clock.
Screenshots
Verdict
The clearest difference is in-app purchases: Oceanodesy at none against World Clock's 1. Oceanodesy also leads on iOS requirement (8.1 vs 15.1). 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
Both are free to download. World Clock sells 1 one-off in-app purchase. Oceanodesy asks for nothing beyond the download.
Oceanodesy ships an update every 4 weeks, World Clock every 5 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | Oceanodesy | World Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (6 ratings) — better | — |
| Positive reviews | 72.7% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 4 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 8.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 5 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Oceaneering International, Inc. | Tomash Sugint |
In-app purchases
Oceanodesy
No in-app purchases
World Clock
- TimeShift Pro$3.99









