Comparison

Tide Alert (NOAA) vs 2 kool

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

Head to head
About

Tide Alert (NOAA)

Get accurate tide predictions, current speeds, and lunar phases with this app. It offers custom alerts, offline access, and detailed weather conditions for coastal areas. Plan your outdoor activities with confidence using comprehensive tidal data.

Highlights
  • Tide predictions for thousands of US stations
  • Tidal current speed and slack tide data
  • Customizable tide alerts
  • Full offline access to tide data
  • Wind, swell, and water temperature forecasts
  • Apple Watch app and widgets
  • Moon phase calendar
Features
Read full description

Tide Alert is the #1 app for tide predictions, tidal currents, and lunar phases, all in one beautiful interface. Powered by NOAA tide forecasts, it delivers accurate high tide and low tide times, current speeds, slack tide windows, swell data, water temperature, and wind conditions for thousands of stations along the US coastline. Set custom alerts for high tide, low tide, or any tide level you choose and never miss a window again. With full offline support, your tide data is always available, even without cell service. What's New: Tidal Currents & Slack Tides • View real-time tidal current speed overlayed on the tide chart. • See slack tide periods with estimated begin and end times. • Current data sourced from NOAA current prediction stations. Compare Tide Charts • Compare multiple stations side by side. • Add stations to compare directly from the map. Monthly High & Low • Redesigned monthly view with visual tide range bars. • See the month's lowest, highest, and average tidal range at a glance. Apple Watch • New ocean conditions view with wind, swell height, water temperature, and current speed. • Tap the wave icon on the main screen to check conditions instantly. Wind, Swell & Water Temperature • Hourly wind speed, gust, and direction forecasts. • Swell chart with height, period, and direction. • Water temperature from NOAA and Open-Meteo. Who is Tide Alert for? Anyone who needs to know the tides. Fishermen timing their catch. Surfers checking swell and tides together. Kayakers and paddleboarders planning safe launches. Boaters and sailors navigating harbors. Crabbers and clammers working low tides. Beach photographers chasing golden hour at low tide. Dog walkers, birdwatchers, and tide pool explorers. Divers planning slack water entries. Key Features: • Tide predictions for thousands of NOAA stations across the US. • Tidal current speed and slack tide annotations on the chart. • Custom tide alerts — get notified for high tide, low tide, or any level. • Full offline access to tide data and charts for favorite stations. • Interactive map with station discovery and quick actions. • Compare tide charts across multiple stations. • Monthly high & low tide overview with daily range bars. • Wind, swell, and water temperature conditions. • Sunrise, sunset, moonrise, and moonset on the chart. • Moon phase calendar. • Apple Watch app with tide chart, conditions, and complications. • Home Screen, Lock Screen, and StandBy widgets. • iOS Shortcuts and Siri voice commands. • Customizable chart symbols and reference levels. • Supports all US time zones and daylight saving time. Tide Alert is free to try with all features available during the trial period. After the trial, a subscription is required to continue. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ DISCLAIMER — See https://tidealert.app/disclaimer.html Use Tide Alert at your own risk. Tide data does not account for the effects of wind, storms, rain, freshwater runoff, or floods. The tide graph uses predicted high and low tide events with approximated segments between them. Do NOT use Tide Alert for NAVIGATION or any purpose that may result in personal injury or property damage. Tide Alert is not liable for any loss, injuries, or damage caused by its use. Tide Alert is not associated with NOAA.

About

2 kool

Instantly see Celsius and Fahrenheit temperatures side-by-side for multiple locations. Avoid awkward translation moments with a clear, readable design and fast city search. Perfect for families and friends across different regions.

Highlights
  • Side-by-side Celsius and Fahrenheit
  • Current temperature and min/max range
  • Fast worldwide city search
  • Current location option
  • Per-location C/F swap
  • Light and dark mode
  • Home and Lock Screen widgets
Read full description

You call family. Someone says, “It’s 75 here.” And everyone pauses to convert. 2 kool ends that pause. See Celsius and Fahrenheit together, side by side, for the places that matter most: here there anywhere No mental math. No awkward translation moments. Just clear weather, instantly. Why people love 2 kool: Free to download and use One simple screen with all key locations Current temperature + today’s min/max range for each place Fast city search worldwide Current location option for here Per-location swap: reverse C/F order with one tap Clean, readable design in light and dark mode Available across Apple platforms: iOS iPadOS macOS tvOS Widgets included: Home Screen widgets in two sizes Lock Screen widgets for quick glance access 2 kool is for families across countries, friends across time zones, and anyone living between two systems. Because home isn’t just one place anymore. And it isn’t just one temperature either.

Screenshots

Tide Alert (NOAA)4 screens
2 kool4 screens

Verdict

The call

The clearest difference is in-app purchases: 2 kool at none against Tide Alert (NOAA)'s 3. 2 kool also leads on rating (5.0 vs 4.8). Tide Alert (NOAA)'s advantage is ratings volume (45K vs 2) and chart position (#34 vs unranked). On price, ads, device support and iOS requirement 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. Tide Alert (NOAA) sells 3 in-app purchases, starting at $6.99 per 3 months. 2 kool asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

2 kool holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Tide Alert (NOAA) has 45K ratings behind it against 2, so its average is the more settled of the two.

Scorecard5 real differences · 6 level
Tide Alert (NOAA) versus 2 kool: the parameters behind the verdict, then further details
ParameterTide Alert (NOAA)2 kool
PriceFreeFree
Rating4.8 (45K ratings)5.0 (2 ratings) — better
Positive reviews72.8% of reviews—
Number of ratings45K — better2
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#34 — better—
DevicesiPhone, iPad, Mac, Apple WatchiPhone, iPad, Mac, Apple TV
Requires iOS16.0 — better17.6
Further details — not scored
Size37 MB3 MB
Age rating4+4+
DeveloperRivolu LLCJohn Loughlin

Customer experience

Tide Alert (NOAA)

All ratings44,774 ratings
Positive96.2%
Neutral2.2%
Negative1.7%
Written reviews151 reviews
Positive72.8%
Neutral7.3%
Negative19.9%

2 kool

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Tide Alert (NOAA)

Reported bugs

2 issues
  • App crashes on launch after iOS updates
  • Tide data not syncing correctly with visual indicators

Requested features

3 requests
  • Add support for negative tide levels
  • Improve sync between app and Apple Watch
  • Implement family sharing for subscription

2 kool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Tide Alert (NOAA)

Subscriptions2
  • 3 Months Full Access$6.993 Months
  • Tide Alert 1 Year Subscription$19.991 Year
One-time1
  • Tide Alert Gold$99.99
None

2 kool

No in-app purchases

Questions

Is Tide Alert (NOAA) free?
Tide Alert (NOAA) is free to download, with in-app purchases available.
Is 2 kool free?
2 kool is free to download, with no in-app purchases.
Which has better reviews, Tide Alert (NOAA) or 2 kool?
2 kool is rated higher. Tide Alert (NOAA) averages 4.8 out of 5 from 45K ratings, while 2 kool averages 5.0 from 2 ratings.
Do Tide Alert (NOAA) or 2 kool have ads?
Neither Tide Alert (NOAA) nor 2 kool shows ads.

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