METAR Plot vs Holdover Times Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
METAR Plot
This application displays up-to-date METAR station data for airports worldwide on your Apple Watch. It offers offline access to station databases and automatic data updates, with customizable flight rules and units.
- Displays METAR station models and raw METARs
- Supports most airports worldwide
- Offline station database access
- Automatic METAR data updates
- Customizable flight rules and units
- Watch face complications
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METAR Plot for Apple Watch displays station models (plots) as well as raw METARs for most airports worldwide, using current METAR data. The app features two stations lists: nearby and user-defined. While the entire station database can be used offline (to add station or lookup nearby station), an internet connection is required to load METAR data. Data is updated automatically. Preferences can be set for type of flight rules and units (visibility, temperature, and pressure). Options for observation time in LT or UTC as well as sort order of user list. The app works completely independent from your iPhone and includes complications for watch faces with rectangular and circular types.
Holdover Times Calculator
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The holdover time (HOT) calculator provides estimated time that deicing/anti-icing fluid will prevent the formation of frost or ice and the accumulation of snow on the critical surfaces of an aircraft. It help flight crews make decisions. Holdover Time begins at the start of the anti icing operation. If a two-step operation is used, then it begins at the start of the final (anti-icing) step. By definition therefore, holdover time will have effectively run out when frozen deposits start to form or accumulate on treated aircraft surfaces.
Screenshots
Verdict
The clearest difference is price: Holdover Times Calculator at Free against METAR Plot's $1.49. Holdover Times Calculator also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.0 vs 17.0). METAR Plot's advantage is in-app purchases (none vs 1) and chart position (#187 vs unranked). On 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
Holdover Times Calculator is free to download; METAR Plot costs $1.49 up front. Holdover Times Calculator sells 1 one-off in-app purchase. METAR Plot asks for nothing beyond the download.
METAR Plot ships an update every 2 months, Holdover Times Calculator every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | METAR Plot | Holdover Times Calculator |
|---|---|---|
| Price | $1.49 | Free — better |
| Rating | 3.4 (5 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Best chart rank | #187 — better | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Lakehorn AG | Andrius Orlovas |
In-app purchases
METAR Plot
No in-app purchases
Holdover Times Calculator
- HOT Calculator Premium$4.99
Questions
Is METAR Plot free?
Is Holdover Times Calculator free?
Do METAR Plot or Holdover Times Calculator have ads?
Which is updated more often, METAR Plot or Holdover Times Calculator?
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