TideSync vs TideCheck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TideSync
This utility tool provides precise marine data for ocean enthusiasts, including tides, weather, and solunar information. It offers offline global data and a native, interactive user experience.
- Global offline tide data
- Pro marine weather charts
- Interactive forecast charts
- Solunar timings and moon phases
- Native iOS experience
- Haptic feedback
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Sync with Nature TideSync is a pure utility tool crafted for ocean enthusiasts. Whether you are surfing, beachcombing, or sailing, we are dedicated to providing you with the most precise and fluid marine data experience. Stripping away the complexity, we utilize native iOS technologies to create a seamless interactive experience. Glide your finger across the screen to feel the rhythm of the tides. Key Features - Global Offline Data - No Internet Needed: Built-in harmonic constant database for 7,000+ major ports and stations worldwide. Accurate tide data is available anytime, anywhere, even offshore or on remote islands. Privacy First: All calculations are performed locally. Your location is used solely to find the nearest station and is never uploaded to the cloud. - Pro Marine Weather - Multi-Dimensional Charts: More than just tide heights. We provide critical data including Air Temperature, Wind Speed, Gusts, Swell, Ocean Currents, Water Temperature, UV Index, Humidity, Precipitation, Visibility, and Barometric Pressure. Dynamic Interaction: Master sea conditions with intuitive Interactive Charts. Drag the cursor to view detailed forecasts for any future moment. - Solunar Info - Precise Timings: Accurate Sunrise/Sunset and Moonrise/Moonset times. Moon Phase: Visual moon phase tracking helps you understand spring and neap tide cycles, aiding in planning your beach trips and fishing activities. - Native Experience - Ultra-Smooth: Built with native Swift for lightning-fast launch times and a lightweight footprint. Haptic Feedback: Experience physical-like vibrations when interacting with charts, thanks to our custom Haptic Feedback integration. Perfect For Surfing: Find the perfect swell window. Beachcombing: Know exactly when low tide hits to explore the intertidal zone. Sailing: Offline chart-grade data for safe navigation. Photography: Catch the golden hour and blue hour over the ocean. Download TideSync today and sync with the pulse of the ocean.
TideCheck
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TideCheck gives you fast, accurate tide predictions for 20,112 coastal stations across 204 countries — calculated with harmonic analysis, the same proven method used by hydrographic agencies worldwide. Whether you fish, surf, boat, dive, or just love the coast, TideCheck shows what the tide is doing right now and what's coming next. FEATURES • Nearest station automatically — tides for the closest station to you • Search 20,000+ stations by name, region, or place • Clear tide chart for any day, with high/low times and heights • Live next-tide countdown and a rising/falling gauge • Solunar fishing times — major & minor feeding periods with a daily rating • Sunrise, sunset, and moon phase • Tide alerts — get notified before each high or low tide at your saved stations • Save favorite stations for quick access • Works offline — your saved tides are cached • Switch between LAT, MLLW, and MSL datums (international & US standards) • Choose meters or feet Predictions use harmonic constituent analysis from NOAA, TICON-4, and FES2022. IMPORTANT Tide predictions are for informational purposes only and are not suitable for navigation. Always consult official nautical charts for safety-critical decisions. TideCheck is free and supported by ads. — Privacy Policy: https://tidecheck.com/privacy Terms of Service: https://tidecheck.com/terms Web & developer API: https://tidecheck.com
Screenshots
Verdict
The clearest difference is ads: TideSync at none against TideCheck's shown. TideCheck's advantage is iOS requirement (16.4 vs 26.2). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | TideSync | TideCheck |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.2 | 16.4 — better |
| Further details — not scored | ||
| Size | 17 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Xinyu Hong | Eric Paolo Smith |
In-app purchases
TideSync
No in-app purchases
TideCheck
No in-app purchases








