Comparison

PredictWind Tracker vs reChain Grib

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

Head to head
About

PredictWind Tracker

Automatically update your personalized GPS tracking page for real-time location sharing. Ideal for boaters, it allows friends and family to monitor your position and route with weather or satellite maps. Link to add blogs and videos for a permanent record of your journey.

Highlights
  • Automatic GPS tracking updates
  • Real-time location sharing
  • Weather and satellite map overlays
  • Add blogs and video links
  • Personalized tracking page
Features
Read full description

This app is designed to automatically update your personalized PredictWind GPS tracking page, ideal for Starlink users or those on LTE/cellular connections. Record and share your tracks to friends families and followers so they monitor your boats position and route in real time with weather or satellite maps. Link through to add blogs, video links for a permanent record of your journey. Note: You need a PredictWind GPS tracking page to use this app. To set up a PredictWind GPS tracking page contact https://www.predictwind.com/contact-us Terms & Conditions: https://www.predictwind.com/about-us/terms-and-conditions Privacy Policy: https://www.predictwind.com/about-us/privacy-policy

About

reChain Grib

Features
Read full description

reChain Grib is the simplest way to request, decode, and view GRIB weather files when you’re offshore with a Garmin inReach device. Built for skippers who need reliable, lightweight, fully offline weather tools, it keeps you informed even far beyond any network. → Generate GRIB Requests Create precise GRIB requests (wind, pressure, waves…) with a clean, intuitive interface. Copy the request and send it via your inReach to a dedicated email—no internet required. → Decode GRIB Chunks Paste the GRIB message chunks received by your inReach. reChain Grib automatically decodes them into a downloadable GRIB file. → View GRIB Forecasts (Built‑in Viewer) Open the GRIB directly inside the app and explore the forecast timeline with a clean, lightweight viewer designed for offshore use. → Built for Offshore Use • 100% offline • Extremely lightweight → Why reChain Grib? Because offshore weather access should be simple, reliable, and available anywhere. Whether you’re crossing an ocean or sailing along a remote coast, reChain Grib gives you the essential tools to request and view weather whenever you need it. → Notes Requires a Garmin inReach device for sending/receiving messages. reChain Grib is not affiliated with Garmin. Terms of Use: https://www.jcskipper.com/rechain/rechain_terms.html

Screenshots

PredictWind Tracker1 screens
reChain Grib4 screens

Verdict

The call

PredictWind Tracker and reChain Grib are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. PredictWind Tracker sells 3 in-app purchases, starting at $49.00 per month and reChain Grib sells 1 in-app purchase, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PredictWind Tracker ships an update every 2 months, reChain Grib every 3 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

ScorecardNo meaningful differences
PredictWind Tracker versus reChain Grib: the parameters behind the verdict, then further details
ParameterPredictWind TrackerreChain Grib
PriceFreeFree
Rating4.4 (7 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size88 MB14 MB
Age rating4+4+
DeveloperPredictWind LimitedJean-Charles Levenne

In-app purchases

3 purchases

PredictWind Tracker

Subscriptions3
  • PredictWind Tracker 1 Month7 Days trial$49.001 Month
  • PredictWind Tracker 3 Months7 Days trial$99.003 Months
  • PredictWind Tracker 12 Months7 Days trial$249.001 Year
1 purchases

reChain Grib

Subscriptions1
  • reChain Premium$8.991 Month

Questions

Is PredictWind Tracker free?
PredictWind Tracker is free to download, with in-app purchases available.
Is reChain Grib free?
reChain Grib is free to download, with in-app purchases available.
Do PredictWind Tracker or reChain Grib have ads?
Neither PredictWind Tracker nor reChain Grib shows ads.
Which is updated more often, PredictWind Tracker or reChain Grib?
PredictWind Tracker ships an update every 2 months, and reChain Grib every 3 weeks. Most recently, PredictWind Tracker was updated on October 27, 2026 and reChain Grib on October 28, 2026.

Other comparisons