# Topo Fire vs Avyline

The clearest difference is rating: Avyline at 5.0 against Topo Fire's 4.5. Topo Fire's advantage is ratings volume (11 vs 1) and device support (5 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Topo Fire sells 1 in-app purchase, starting at $59.99 per year and Avyline sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Avyline holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Topo Fire has 11 ratings behind it against 1, so its average is the more settled of the two.

Topo Fire ships an update weekly, Avyline every 5 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Topo Fire | Avyline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/topo-fire/id6446780541/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/avyline-backcountry-ski-map/id6801948006/reviews)** |
| Number of ratings | **11** | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 185 MB | 13 MB |
| Requires iOS | **15** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Glacier Peak Studios LLC](https://appshunter.io/developer/672246356) | [国刚 赵](https://appshunter.io/developer/900867272) |

## What reviewers say

### Topo Fire

[App page](https://appshunter.io/ios/app/topo-fire/id6446780541)

This app provides wildland firefighters with essential mapping tools and resources for incident response. It offers shared incident maps, various map layers, and navigation aids, all accessible on mobile devices and Apple Watch.

**Highlights:** Shared incident maps with live location, Multiple map layers (USGS, Forest Service, etc.), Drawing and waypoint tools, Proximity alerts, Apple Watch integration, Cloud sync across devices

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Topo Fire Pro | $59.99 | per year |


### Avyline

[App page](https://appshunter.io/ios/app/avyline-backcountry-ski-map/id6801948006)

Plan backcountry ski tours with an offline 3D terrain planner. Analyze steepness, avalanche exposure, and compare routes. Access official forecasts and safety features without cell signal.

**Highlights:** Offline 3D terrain planning, Avalanche terrain exposure analysis, Route comparison tool, Official avalanche forecasts, Slope and look-ahead radar alerts, Sun/shade simulation, GPX/KML/FIT route import

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Avyline Pro Monthly | $3.99 | per month |
| Avyline Pro Annual（≤30） | $19.99 | per year |
| Avyline Founding Member | $59.99 | one-time |


## Frequently asked questions

### Is Topo Fire free?

Topo Fire is free to download, with in-app purchases available.

### Is Avyline free?

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

### Which has better reviews, Topo Fire or Avyline?

Avyline is rated higher. Topo Fire averages 4.5 out of 5 from 11 ratings, while Avyline averages 5.0 from 1 ratings.

### Do Topo Fire or Avyline have ads?

Neither Topo Fire nor Avyline shows ads.

### Which is updated more often, Topo Fire or Avyline?

Topo Fire ships an update weekly, and Avyline every 5 days. Most recently, Topo Fire was updated on October 24, 2026 and Avyline on October 31, 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.*