SkiYYC vs ThreeTopo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SkiYYC
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SKiYYC provides skiers a simple map which displays updated ski trail condition information from the multitude of data sources on the internet. Click on a map pin for more detailed information on the ski conditions. Skiers can also submit trail reports, and that information is uploaded to the map for the rest of the ski community to enjoy!
ThreeTopo
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This version of ThreeTopo contains a single topo for the classic multi-pitch trad climb named "Red Shirt" on Mt. Yamnuska. This application was developed as part of the paper "ThreeTopo: Focused Interactive Navigation for Multi-Pitch Rock Climbing" which was presented at the 2026 ACM CHI Conference on Human Factors in Computing Systems, and was awarded Best Paper. We (the authors) have decided to make the application public so that anyone hoping to climb Red Shirt can benefit from the system. We also hope that it may inspire future work on 3D navigation resources for rock climbing.
Screenshots
Verdict
The clearest difference is iOS requirement: SkiYYC at 12.0 against ThreeTopo's 18.0. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | SkiYYC | ThreeTopo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 25 MB | 255 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeffrey Schlachter | Benjamin Pearman |
In-app purchases
SkiYYC
No in-app purchases
ThreeTopo
No in-app purchases
