TuMarea vs Merestone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TuMarea
Access tide tables for 69 Spanish ports and Lisbon. View current tide status, heights, and speed, plus 30-day forecasts including moon phases. All data is offline and uses official, real-time hours.
- Tide tables for 69 Spanish ports and Lisbon
- Current tide status (rising/falling)
- Tide heights and speed
- 30-day tide forecasts
- Moon phase information
- Official, real-time tide hours
- Offline data access
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Ahora puedes tener en tu dispositivo todas las tablas de mareas de los 69 puertos españoles y Lisboa La pantalla principal te mostrará el estado actual, si está subiendo o bajando, alturas (máxima, mínima y actual) y velocidad de la marea en el puerto elegido. Podrás también visualizar las tablas de mareas de los próximos 30 días, indicando alturas, coeficientes y lunas. Una búsqueda personalizadas de las 12 mareas pleamar/bajamar vivas/muertas 15/30/60 días. A diferencia de otras tablas las horas que se muestran son siempre horas oficiales (reales). Se considera como horario oficial el que muestra tu Iphone/iPad y tiene en cuenta el cambio de horario invierno/verano. Los datos de las mareas están cotejados con los publicados en el Anuario de Mareas 2026 según informaciones remitidas por las Comisiones Hidrográficas. Toda la información está incluida dentro de la aplicación, por lo tanto NO necesita ninguna conexión a Internet lo que ademas asegura que no tendrás publicidad ni ningún tipo de seguimiento.
Merestone
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Merestone runs the constraints check of an environmental desktop review: drop a pin, set a radius, get results by distance and direction and a dated PDF with sources and licenses, on iPhone, iPad and Mac. Not a field survey, a wetland delineation, an IPaC official species list or an agency determination. UNITED STATES Free, with a 250 m search: PAD-US protected and conserved lands, National Wildlife Refuge System boundaries, and FWS wilderness and proposed wilderness. With a purchase or subscription, for NEPA screening, Section 7 consultation prep and the environmental setting of a Phase I ESA: • ESA critical habitat, final and proposed (FWS, NOAA Fisheries); listed species ranges (EPA snapshot) • NWI wetlands and deepwater habitats, a first look before delineation • FEMA flood zones in Washington, DC (SFHA and 0.2% annual chance) with DC's modeled rain scenarios; a Massachusetts NFHL snapshot of uncertain date • California Fire Hazard Severity Zones (SRA effective 2024, LRA recommended 2025); MTBS burned areas 2024 • National Register of Historic Places, EPA Superfund site boundaries, sole source aquifers • Federal lands: NPS, National Forests, roadless areas, BLM wilderness and WSAs, ACECs, Wild and Scenic Rivers, surface management agency, PLSS • Water: NHD streams and waterbodies, HUC-12 subwatersheds, EPA ATTAINS assessed waters • National marine sanctuaries, state MPAs, West Coast EFH and HAPCs • USGS geology and Quaternary faults; SSURGO soils and NLCD land cover (map images) • American Indian and Alaska Native lands (BIA), and more in the app WGS84 UTM coordinates; app and PDF report in English. US layers need an internet connection. CANADA AND MEXICO Canada: CPCAD and BC provincial parks free; SARA critical habitat, DFO aquatic species at risk, wetlands and provincial layers with a purchase. National Canadian layers need a connection. New: Mexico. Federal ANP, certified ADVC and Ramsar sites free; CONABIO mangroves, CONAGUA aquifers, SGM geology and INEGI land use, soil and basin maps (map images) with a purchase. App and report in Latin American Spanish on Mexican devices. United States · Canada · Mexico · Brazil · United Kingdom · Ireland · France · Belgium · Netherlands · Luxembourg · Germany · Austria · Switzerland · Liechtenstein · Italy · Malta · Spain · Portugal · Norway · Sweden · Finland · Denmark · Iceland · Estonia · Latvia · Lithuania · Poland · Czechia · Slovakia · Hungary · Slovenia · Croatia · Romania · Bulgaria · Greece · Cyprus · Australia · New Zealand · Japan · Hong Kong Some protected areas are free in every country and region; other layers come with a purchase. New: Japan and Hong Kong, in Japanese and Traditional Chinese. BUYING Merestone Worldwide is a subscription to every country and region, including any added later. A free 7-day gift unlocks them all once, with no renewal and nothing to cancel. Or buy a country, region or bundle once in the app (North America: United States, Canada and Mexico). Free: a set of protected areas everywhere, with a 250 m search. PDF export, the wider radius and offline downloads of eligible layers need a purchase or subscription; US, national Canadian and Swiss layers work online only. Merestone is independent of agencies. DATA AND LIMITS Public records are incomplete and may withhold sensitive species; empty is not proof of absence. Map-image layers cannot be downloaded or radius-searched. Not in the app yet: nationwide FEMA flood zones (DC and the Massachusetts snapshot only), state Natural Heritage records. Confirm the official record before relying on it. TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://leonfigueira.github.io/fieldmark-site/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: TuMarea at none against Merestone's 10. TuMarea also leads on iOS requirement (12.0 vs 17.0). Merestone's advantage is update cadence (every 3 days vs every 7 months). On price, 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. Merestone sells 10 one-off in-app purchases. TuMarea asks for nothing beyond the download.
TuMarea ships an update every 7 months, Merestone every 3 days. Both last shipped on November 1, 2026.
| Parameter | TuMarea | Merestone |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 52.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 204 MB |
| Age rating | 4+ | 4+ |
| Developer | LUIS GONZALEZ | LEON NELIO FIGUEIRA |
In-app purchases
TuMarea
No in-app purchases
Merestone
- Merestone Pro East Asia$11.99
- Merestone Pro IT+SI+MT$12.99
- Merestone Pro Brazil$14.99
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- Merestone Pro North America$14.99
- Merestone Pro Malta$17.99
- Merestone Pro Mexico$19.99
- Merestone Pro East Asia$19.99
- Merestone Pro Hong Kong$24.99
- Merestone Pro Japan$29.99
- Merestone Pro East Asia$39.99






