Comparison

RNF First Alert Weather vs HailCore

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

Head to head
About

RNF First Alert Weather

Get hyper-local weather forecasts and severe weather alerts. Features include high-resolution radar, future radar, and satellite imagery. Stay informed with current conditions and hourly/daily forecasts for your saved locations.

Highlights
  • 250 meter radar
  • Future radar
  • High resolution satellite imagery
  • Current weather updates
  • Daily and hourly forecasts
  • Save favorite locations
  • Severe weather alerts
Features
Read full description

23 News is proud to announce the First Alert Weather app for the iPhone and iPad. Features • Access to station content specifically for our mobile users • 250 meter radar, the highest resolution available • Future radar to see where severe weather is headed • High resolution satellite cloud imagery • Current weather updated multiple times per hour • Daily and Hourly forecasts updated hourly from our computer models • Ability to add and save your favorite locations • A fully integrated GPS for current location awareness • Severe weather alerts from the National Weather Service • Opt-in push alerts to keep you safe in severe weather

About

HailCore

Receive proactive alerts for approaching hail-producing storms. This app continuously monitors radar data, notifying you before severe weather impacts your location. It also provides detailed forecasts, current conditions, and hurricane tracking.

Highlights
  • Hail-producing radar core detection
  • Push notifications for approaching storms
  • Live radar map with hail size estimates
  • Wind gust alerts from ground stations
  • Hurricane and tropical cyclone tracker
  • 7-day forecast and current conditions
  • Dual-polarization radar analysis
Features
Read full description

HailCore is built specifically to detect hail-producing radar cores and alert you before they reach your location. Most weather apps make you watch the radar yourself. HailCore watches it for you — scanning live NEXRAD data continuously and sending a push notification the moment a high-reflectivity core crosses your alert radius. WHAT HAILCORE DOES - Monitors live NEXRAD radar for hail-producing cores, using dual-polarization (CC/ZDR) classification layered on reflectivity — not reflectivity alone - Sends push alerts when a hail-producing cell enters your defined radius - Displays detected cells on a live map with dBZ values and estimated hail size - Separate wind gust alerts from real ASOS/AWOS ground-station reports — not radar-derived — with their own threshold and radius - Hurricane and tropical cyclone tracker: forecast cone, track, and storm points sourced from NOAA - Shows your nearest NEXRAD radar station and last update time - Integrates with your Tempest Weather Station for local ground truth data - Current conditions at your location: temperature, wind, humidity, dewpoint, pressure, and visibility - Full 7-day forecast, hourly breakdown, and sun/moon data WHY dBZ MATTERS Reflectivity (dBZ) is the most reliable radar indicator of hail — but reflectivity alone can't always tell hail apart from heavy rain. HailCore layers dual-polarization classification (correlation coefficient and differential reflectivity) on top of a 58 dBZ default to help make that distinction. Choose Conservative for fewer, higher-confidence alerts, Balanced for the default behavior, Aggressive to flag every reflectivity core above the severe-hail threshold, or Auto to let HailCore pick the right sensitivity per storm based on that day's NOAA SPC hail outlook at your location. BUILT FOR PEOPLE WITH SOMETHING TO PROTECT Whether it's your vehicle, your roof, your lawn, or your equipment — HailCore gives you the lead time to take cover, pull into a garage, or get off the road before hail arrives. HAILCORE PREMIUM - Hail Risk forecast powered by NOAA SPC Convective Outlooks (Day 1-2) - SPC Convective Outlook map overlay — national Day 1-3 categorical risk zones - Storm movement vectors showing cell direction and speed - Radar timelapse - Cloud density overlay for broader storm-system context - Lightning strike overlay using real GOES satellite lightning data - Full national radar view — the whole-CONUS mosaic, not just your local station - Multi-location monitoring Available as $2.99/month, $24.99/year, or a limited-time $49.99 lifetime purchase. HailCore uses NOAA NEXRAD data — the same radar network used by professional meteorologists — delivered in near real-time directly to your device. Terms of Use (EULA): https://hailcore.app/terms

Screenshots

RNF First Alert Weather4 screens
HailCore4 screens

Verdict

The call

The clearest difference is review sentiment: HailCore at 100% against RNF First Alert Weather's 44%. HailCore also leads on ads (none vs shown) and rating (5.0 vs 4.6). RNF First Alert Weather's advantage is in-app purchases (none vs 3) and ratings volume (2.8K vs 3). On price, 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. HailCore sells 3 in-app purchases, starting at $2.99 per month. RNF First Alert Weather asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HailCore holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: RNF First Alert Weather has 2.8K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 44% of RNF First Alert Weather's written reviews are positive against 100% of HailCore's.

UpkeepUpdate frequency

RNF First Alert Weather ships an update every 2 months, HailCore every 2 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
RNF First Alert Weather versus HailCore: the parameters behind the verdict, then further details
ParameterRNF First Alert WeatherHailCore
PriceFreeFree
Rating4.6 (2.8K ratings)5.0 (3 ratings) — better
Positive reviews44.1% of reviews100.0% of reviews — better
Number of ratings2.8K — better3
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size252 MB83 MB
Age rating4+4+
DeveloperGray Television Group, Inc.PHILIP KIRSCHNER KAPPE

Customer experience

RNF First Alert Weather

All ratings2,784 ratings
Positive92.1%
Neutral4.4%
Negative3.6%
Written reviews34 reviews
Positive44.1%
Neutral5.9%
Negative50.0%

HailCore

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

RNF First Alert Weather

Reported bugs

6 issues
  • Constant crashes
  • App doesn't work anymore on iPad iOS 17
  • Radar is a joke
  • Stopped working.
  • App stalls now and won't open
Show 1 more
  • Satellite images are very old.

Requested features

1 request
  • Can you make the numbers for sunrise/sunst as big as the moonrise/set?

HailCore

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

RNF First Alert Weather

No in-app purchases

3 purchases

HailCore

Subscriptions2
  • HailCore Premium$2.991 Month
  • HailCore Premium$24.991 Year
One-time1
  • HailCore Premium Lifetime$49.99

Questions

Is RNF First Alert Weather free?
RNF First Alert Weather is free to download, with no in-app purchases.
Is HailCore free?
HailCore is free to download, with in-app purchases available.
Which has better reviews, RNF First Alert Weather or HailCore?
HailCore is rated higher. RNF First Alert Weather averages 4.6 out of 5 from 2.8K ratings, while HailCore averages 5.0 from 3 ratings.
Do RNF First Alert Weather or HailCore have ads?
RNF First Alert Weather shows ads; HailCore does not.
Which is updated more often, RNF First Alert Weather or HailCore?
RNF First Alert Weather ships an update every 2 months, and HailCore every 2 weeks. Most recently, RNF First Alert Weather was updated on October 24, 2026 and HailCore on October 9, 2026.

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