Comparison

Ultra vs SkullAdvisor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ultra

Features
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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

About

SkullAdvisor

Features
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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

Ultra4 screens
SkullAdvisor4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ultra sells 4 in-app purchases, starting at $0.49 per month. SkullAdvisor asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 3 level
Ultra versus SkullAdvisor: the parameters behind the verdict, then further details
ParameterUltraSkullAdvisor
PriceFreeFree
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.415.1 — better
Further details — not scored
Size183 MB33 MB
Age rating4+4+
DeveloperFrederic BagesBONE BREAKER

In-app purchases

4 purchases

Ultra

Subscriptions4
  • Basic (Monthly)$0.491 Month
  • Premium (Monthly)$0.991 Month
  • Basic (Annual)$3.991 Year
Show 1 more
  • Premium (Annual)$8.991 Year
None

SkullAdvisor

No in-app purchases

Questions

Is Ultra free?
Ultra is free to download, with in-app purchases available.
Is SkullAdvisor free?
SkullAdvisor is free to download, with no in-app purchases.
Do Ultra or SkullAdvisor have ads?
Neither Ultra nor SkullAdvisor shows ads.
Which is updated more often, Ultra or SkullAdvisor?
Ultra ships an update every 2 months, and SkullAdvisor every 10 days. Most recently, Ultra was updated on October 18, 2026 and SkullAdvisor on October 4, 2026.

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