Ullr vs AspectAvy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ullr
This app provides detailed reports on ski, snowboard, and bike park conditions, including feature setups and locations. It allows users to follow favorite mountains for park updates and offers resorts tools for park management and documentation.
- Terrain park condition reports
- Bike park condition reports
- Feature setup and location details
- Follow favorite mountains
- Park management tools for resorts
- Park documentation and risk management
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Ullr is the mobile-first software platform for ski resort and bike park operations. From terrain park build logs to ANSI B77.1 lift documentation to bike park trail sweeps, Ullr brings your daily logs, inspections, maintenance, and risk management into one system that works anywhere on the mountain — even offline. Trusted by resorts large and small across the world. ** For Mountain Operations Teams ** Ullr replaces clipboards, paper forms, and scattered spreadsheets with a single source of truth for your mountain. • Terrain Parks — Build logs, park logs, jump measurements, and feature-level history. • Lift Ops. & Maintenance — A unified digital logbook for every lift, plus stoppage tracking, recurring inspections, and work orders. • Bike Parks — Trail sweeps, condition reports, and maintenance documentation built for summer ops. • Custom Forms — Digitize your existing paperwork or build new forms tailored to your mountain. • Offline-First — Work out on the hill without a signal. Everything syncs when you're back in range. • Share Conditions — Auto-update park maps, lift status, and trail conditions on your website, social media, or through the Ullr API. ** For Riders ** Follow your favorite mountains to see what's set up in the park, what lifts are spinning, and what trails are open — with push notifications when conditions change.
AspectAvy
This app provides real-time avalanche safety information and tools for backcountry enthusiasts. It features dynamic slope angle shading, live forecasts, and LiDAR mapping to help users assess risk and make informed decisions in avalanche terrain.
- Dynamic slope angle shading
- Live avalanche and weather forecasts
- LiDAR mapping
- Safety checklists
- Built-in slope angle meter
- Route tracking and sharing
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At AspectAvy, our mission is to save lives from avalanches. Which is why we developed a whole new class of avalanche safety gear: preventive avalanche safety gear. AspectAvy Features: DYNAMIC SLOPE ANGLE SHADING This feature separates AspectAvy and makes us an avalanche safety tool. Our maps update slope angle shading in real-time based on the conditions you’re experiencing on the mountain. Even in airplane mode, we visualize the risk factor, helping to relieve decision fatigue, and giving you an objective picture of the risk level around your immediate location. LIVE AVALANCHE AND WEATHER FORECASTS We incorporate up-to-the-minute live avalanche and weather forecasts right into the app. The forecasts and maps are stored locally on your phone, meaning you have access to the most recent downladed information. Closing the gap between planning and touring, and ensuring you have the most updated forecast information available. INDUSTRY-LEADING LiDAR MAPPING Our rock-solid, fast-loading LiDAR maps are stored locally on your phone, meaning you’re not straining for a signal when decisions matter most. Accurate to 3-meter resolution, you’ll see the terrain and risk factor around your precise location. Giving you control of the slopes you ski, and putting peace of mind in your pocket. TRAILHEAD AND DROP-IN SAFETY CHECKS Our comprehensive and interactive safety checklists help ensure your preparedness, grounding your group in proper avalanche safety best practices. BUILT-IN SLOPE ANGLE METER Our built-in slope angle meter helps you verify slope angle so you know where to ski based on real-time risk levels. It also calculates the length of avalanche run-out zones, keeping you safe at the top of the slope, and the bottom when you’re traveling through avalanche terrain. ROUTE TRACKING AND SHARING Industry standard GPS route tracking shows exactly where your tour traveled, and makes it easy to share the route with everyone in your group. You can even see when and where you were close to avalanche danger, and where you avoided higher-risk terrain. DATA-DRIVEN SAFETY Our algorithm was built on decades of avalanche safety data. By harnessing this data, AspectAvy provides you with clear and precise route recommendations based on avalanche statistics. We pinpoint low-risk slopes – with risk levels akin to driving a car – empowering you to make informed choices with confidence, ensuring an exciting, yet safe backcountry skiing experience. Not available in Alaska or New Hampshire Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Ullr at 4.4 against AspectAvy's 3.8. Ullr also leads on review sentiment (86% vs 50%) and update cadence (every 9 days vs every 2 months). On price, ratings volume, ads and in-app purchases 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.
Ullr holds the better App Store score, 4.4 against 3.8. Both are backed by a comparable volume of ratings — 28 and 37 respectively. Written reviews point the same way: 86% of Ullr's written reviews are positive against 50% of AspectAvy's.
Ullr ships an update every 9 days, AspectAvy every 2 months. The most recent releases landed on September 20, 2026 and June 8, 2026 respectively.
| Parameter | Ullr | AspectAvy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (28 ratings) — better | 3.8 (37 ratings) |
| Positive reviews | 85.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 28 | 37 — better |
| Update frequency | Every 9 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.6 |
| Further details — not scored | ||
| Size | 97 MB | 83 MB |
| Age rating | 9+ | 17+ |
| Developer | Future Spin Software, LLC | Aspect Avy Inc |
Customer experience
Ullr
AspectAvy
In-app purchases
Ullr
No in-app purchases
AspectAvy
No in-app purchases





