Ultra vs SkullAdvisor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultra
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This application has been designed for ultra-runners who want to use their AppleWatch during their ultra-trail workout. The application includes a specialized cartography and a simple interface which allows you to concentrate on your run. IMPORTANT: To support very long runs, the workout is recorded by the iPhone. The AppleWatch is used for displaying the metrics, the cartography and to record heart rates but is not mandatory and can be charged during the run without interrupting the recording. Thus it is not possible to use the AppleWatch without the iPhone. Features include: - Customizable iPhone and AppleWatch screens - Many metrics available: - Time and Distance - Positive and negative elevation - Pace and speed (actual, mean, ...) - Specialized cartography - GPX track display, including elevation graph if available in the GPX: - More than one GPX track can be loaded and displayed. - Each GPX track loaded can have a different color. - GPX track based metrics always aligned with the race profile: - travelled distance, positive and negative elevation - Remaining distance, positive and negative elevation - Elevation graph display on the iPhone and AppleWatch: - Elevation graph can be customized with user defined colors and slope ranges. - Roadbook on the iPhone and AppleWatch: - Add aid stations, passage points and life bases along your track. - Track food and drink-mix nutrition for each waypoint, with a per-life-base summary. - Set cut-off and planned times, with global or per-section adjustments. - Section information (distance, elevation) shown between waypoints. - Race planning and time estimation: - Plan your start time and per-waypoint stop durations on the Times screen. - Live estimated arrival times at each waypoint and at the finish. - Estimated trail duration in the trail list and trail detail screen. - Personal runner profile with VMA, automatically calibrated from Apple Health VO2Max. - Estimates factor in terrain difficulty and day/night, and can be calibrated from your past runs. - Weather along your trail (requires a subscription): - On-demand weather forecasts on the trail detail screen. - Coloured weather strips on the elevation graph: temperature, precipitation and forecast confidence. - Waypoint strips on the elevation graph: distance from start, planned time, cut-off time and name. - Trail run recording with Apple HealthKit support (up to 4 days long). - Heart rate colored zones - Phone and Watch battery status display on the AppleWatch. - AppleWatch Ultra Action button support for workout start and lap. - Stop button is protected by a random code to avoid any unexpected recording stop. - Recovery procedure to continue a recording in case you forgot to charge your iPhone during a multi-day race. - Low power consumption allows to record a 44 hour race with only a 5000mAh external battery connected to a fully charged iPhone Pro 14 in battery economy mode. The free version supports trails up to 40 km. A subscription unlocks unlimited trail distance and weather information. Users who previously bought the application keep full access. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://ultra-trails.galette.net/#privacy
SkullAdvisor
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SkullAdvisor est une application qui permet aux athlètes de noter les compétions auxquelles ils ont participé et aux organisateurs de connaître l'avis des participants sur leurs compétitions.
Screenshots
Verdict
The clearest difference is in-app purchases: SkullAdvisor at none against Ultra's 4. SkullAdvisor also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (15.1 vs 17.4). On price, 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
Both are free to download. Ultra sells 4 in-app purchases, starting at $0.49 per month. SkullAdvisor asks for nothing beyond the download.
Ultra ships an update every 2 months, SkullAdvisor every 10 days. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.
| Parameter | Ultra | SkullAdvisor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 183 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Frederic Bages | BONE BREAKER |
In-app purchases
Ultra
- Basic (Monthly)$0.491 Month
- Premium (Monthly)$0.991 Month
- Basic (Annual)$3.991 Year
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- Premium (Annual)$8.991 Year
SkullAdvisor
No in-app purchases









