Comparison

Cold WXR Altitude Correction vs AmpWidgets

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

Head to head
About

Cold WXR Altitude Correction

This tool calculates and visualizes approach altitudes in cold weather conditions, offering a more precise method than standard corrections. It features a graphical interface for glide paths, corrected altitudes, and a table of distances with related corrected altitudes. Includes a handbook and dark mode for night operations.

Highlights
  • Cold weather altitude correction
  • METAR RWY Report decoder
  • Graphical altitude visualization
  • Distance-Altitude table
  • ICAO PANS OPS Doc 8168 based calculation
  • Dark mode for night operations
Features
Read full description

Cold Weather Altitude Correction is a tool for pilots to calculate and visualize cold temperature altitude corrections for instrument approaches. Calculations are based on ICAO PANS-OPS Doc 8168. The app uses a more accurate calculation method than the commonly used 4% correction, which becomes increasingly inaccurate at temperatures below -15°C. Unlike conventional tools that simply provide a list of temperature-corrected altitudes, Cold Weather Altitude Correction visualizes the corrections in the context of an actual approach. GRAPHICAL APPROACH VIEW Enter the aerodrome elevation and temperature to display a graphical representation including: • Glide path to the runway • Corrected MSA • Corrected MDA • Corrected GPA • Corrected custom altitude Move the yellow marker along the glide path to display corrected altitudes and their corresponding distances from the runway threshold or a DME station. DISTANCE / ALTITUDE TABLE Calculate a table of distances and corresponding corrected altitudes, similar to the distance/altitude tables found on instrument approach charts, but with cold-temperature-corrected altitudes. Choose between an approach based on distance to threshold (GPS) or on a defined DME station. METAR RWY REPORT DECODER The app also includes a decoder for METAR RWY reports. ADDITIONAL FEATURES • Built-in handbook • Dark Mode for night operations

About

AmpWidgets

Monitor your Victron energy system in real-time with customizable widgets for your iPhone, iPad, Mac, and Apple Watch. View battery status, solar production, and more without opening the main app.

Highlights
  • Real-time battery and solar monitoring
  • Home Screen, Lock Screen, and StandBy widgets
  • macOS desktop and Notification Center widgets
  • Apple Watch complications
  • Customizable metric display
  • Light, Dark, and Auto appearance modes
  • Background data refresh
Features
Read full description

Never miss a thing with your Victron system. AmpWidgets brings powerful battery, solar, tank, sensor, and system monitoring to every screen you own. Check your most important Victron VRM data on your iPhone, iPad, Mac, and Apple Watch — without constantly opening the VRM app. WIDGETS EVERYWHERE • Home Screen widgets for quick system checks • Lock Screen widgets for instant battery and solar metrics • StandBy support for an always-visible display • macOS desktop and Notification Center widgets • Apple Watch complications for glanceable updates on your wrist • A resizable widget that shows one, three, or six metrics at a time SMART ALERTS Create custom rules for the moments that matter: • Battery below your chosen percentage • Current rising above or falling below a threshold • System or battery state changes • Any value that needs your attention AmpWidgets checks your rules automatically in the background and notifies you the moment something changes — with smart cooldowns so you're never spammed. COMPLETE VICTRON MONITORING See more of your system than ever before: • Battery state of charge, voltage, current, and power • Individual cell voltage highs and lows, plus pack balance for lithium banks • Consumed amp-hours and time-to-go • Solar power output, PV voltage, and today's / yesterday's yield • Charge cycles, charged and discharged energy, min/max voltage • Battery temperature, health details, and starter-battery data • Per-device readings for every shunt, BMS, and charger • System status and alarm summaries TANKS, SENSORS & SYSTEM STATES AmpWidgets supports more Victron data than ever, including: • Fresh, grey, fuel, and gas/LPG tank levels — with a combined level per fluid type • Distinct icons so water and gas tanks are instantly recognizable • Temperature, humidity, and pressure sensors, shown by their real device names • Shore- and generator-power detection via AC input voltage • AC input and output, DC loads, and EV charger data • System, battery, inverter, charger, and solar-charger states CUSTOMIZABLE TO YOUR NEEDS Build the monitoring setup that works for you: • Choose exactly which metrics to display • Use simple widgets for a single value, or expand them to show more • Set Light, Dark, or Auto appearance independently for each widget • Rename your devices so they make sense to you • View solar production trend charts • Switch between multiple installations from the dashboard • Try everything instantly with built-in Demo Mode — no account needed APPLE WATCH SUPPORT Keep your Victron system on your wrist: • View battery, solar, tank, and temperature data directly on Apple Watch • Add complications from the watch face gallery • Reliable independent background updates BUILT FOR OFF-GRID LIVING Whether you're in an RV, on a boat, at a cabin, or running a mobile power setup, AmpWidgets helps you stay informed without constantly checking your system manually. See at a glance if your batteries are charging, how much solar you're producing, whether your tanks need attention, and the instant something important changes. WORKS WITH YOUR VRM ACCOUNT AmpWidgets connects directly to your Victron VRM installation. Just enter your Installation ID and API token from vrm.victronenergy.com and you're ready to go. One app, every screen. Download AmpWidgets and take control of your power monitoring.

Screenshots

AmpWidgets4 screens

Verdict

The call

The clearest difference is review sentiment: AmpWidgets at 67% against Cold WXR Altitude Correction's 33%. AmpWidgets also leads on update cadence (every 2 weeks vs every 6 months) and price ($0.99 vs $4.99). Cold WXR Altitude Correction's advantage is iOS requirement (15.0 vs 18.4). On ads, in-app purchases and monetization model 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

Cold WXR Altitude Correction costs $4.99 and AmpWidgets $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Cold WXR Altitude Correction ships an update every 6 months, AmpWidgets every 2 weeks. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Cold WXR Altitude Correction versus AmpWidgets: the parameters behind the verdict, then further details
ParameterCold WXR Altitude CorrectionAmpWidgets
Price$4.99$0.99 — better
Rating—5.0 (1 ratings) — better
Positive reviews33.3% of reviews66.7% of reviews — better
Number of ratings—1 — better
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.0 — better18.4
Further details — not scored
Size13 MB8 MB
Age rating4+4+
DeveloperRalf KeberNorthbound House LLC

Customer experience

Cold WXR Altitude Correction

Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

AmpWidgets

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Cold WXR Altitude Correction

No in-app purchases

None

AmpWidgets

No in-app purchases

Questions

Is Cold WXR Altitude Correction free?
Cold WXR Altitude Correction costs $4.99, with no in-app purchases.
Is AmpWidgets free?
AmpWidgets costs $0.99, with no in-app purchases.
Do Cold WXR Altitude Correction or AmpWidgets have ads?
Neither Cold WXR Altitude Correction nor AmpWidgets shows ads.
Which is updated more often, Cold WXR Altitude Correction or AmpWidgets?
Cold WXR Altitude Correction ships an update every 6 months, and AmpWidgets every 2 weeks. Most recently, Cold WXR Altitude Correction was updated on October 24, 2026 and AmpWidgets on October 24, 2026.

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