# Winter OPS vs ATIS Relay

The clearest difference is update cadence: Winter OPS at every 4 months against ATIS Relay's every 9 months. Winter OPS also leads on iOS requirement (15.0 vs 17.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Winter OPS sells 7 in-app purchases, starting at $8.99 per year and ATIS Relay sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Winter OPS ships an update every 4 months, ATIS Relay every 9 months. The most recent releases landed on October 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Winter OPS | ATIS Relay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/atis-relay/id6479165645/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 65 MB | 20 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Avimont GmbH](https://appshunter.io/developer/488879220) | [Ford Davis](https://appshunter.io/developer/619717963) |

## What reviewers say

### Winter OPS

[App page](https://appshunter.io/ios/app/winter-ops/id488881673)

This application assists with de-icing and anti-icing procedures by providing holdover time calculations based on official guidelines. It also decodes SNOWTAMs and offers customizable alerts for approaching expiry times, aiding aviation operations in winter conditions.

**Highlights:** Holdover Time (HOT) calculations, SNOWTAM decoding, Customizable expiry time alerts, Qualified fluid information, Weather definitions, Dark mode support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 year generic Fluids (FAA) | $8.99 | per year |
| 1 year generic Fluids (EASA) | $8.99 | per year |
| 1 year generic Fluids (TC) | $8.99 | per year |
| 1 year all Fluids (FAA) | $14.99 | per year |
| 1 year all Fluids (EASA) | $14.99 | per year |
| 1 year all Fluids (TC) | $14.99 | per year |
| Decoder Enabling | $1.99 | one-time |


### ATIS Relay

[App page](https://appshunter.io/ios/app/atis-relay/id6479165645)

Access real-time ATIS and weather information for over 160 US airports. Get live audio, transcripts, and digital ATIS updates. Features include METARs and customizable home screen widgets.

**Highlights:** Live ATIS audio and transcripts, Digital ATIS for 76 airports, Free community access to ATIS, METARs and interpreted METARs, Customizable METAR widgets, Text message ATIS updates (subscription)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ATIS Relay Plus (Monthly) | $5.99 | per month |
| ATIS Relay Plus (Annual) | $24.99 | per year |


## Frequently asked questions

### Is Winter OPS free?

Winter OPS is free to download, with in-app purchases available.

### Is ATIS Relay free?

ATIS Relay is free to download, with in-app purchases available.

### Do Winter OPS or ATIS Relay have ads?

Neither Winter OPS nor ATIS Relay shows ads.

### Which is updated more often, Winter OPS or ATIS Relay?

Winter OPS ships an update every 4 months, and ATIS Relay every 9 months. Most recently, Winter OPS was updated on October 8, 2026 and ATIS Relay on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*