Comparison

Core by RTI vs K&S Jump

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

Head to head
About

Core by RTI

This app serves as a comprehensive resource for figure skating, offering video demonstrations, tutorials, and diagrams. It's designed to support skaters, coaches, and parents in their figure skating journey, from beginner to advanced levels.

Highlights
  • Video demonstrations
  • Tutorials
  • Diagrams
  • Resource center
  • Skater guidance
  • Coach support
Features
Read full description

Welcome to C.O.R.E by RTI - the Collaborative Online Resource Center! C.O.R.E. was designed from the ground up as an affordable complement to professional figure skating instruction! Whether you're a coach, skater, or parent, C.O.R.E. has everything you need to guide your skater from their first steps on the ice to become the figure skater they want to be! This is the ultimate resource, including tons of video demos, tutorials, diagrams and so much more! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

K&S Jump

Features
Read full description

Kiss & Score is a practice tool for analyzing figure skating jump videos. Jump analysis is free with no usage limit. Select a video from your library or record one directly, and the app shows rotation count, air time, estimated height, and landing in a single view. All analysis runs on the user's device. Videos are not transmitted externally by default; a video is sent only when the user attaches one while reporting an analysis error and consents to it. The app does not collect information such as school names or real names. Key features · Jump video analysis — unlimited and free · Analysis history — up to 5 saved on the free tier (delete existing records to save more) · Recording guide — how to film for better measurement accuracy · Skeleton (pose) view — review posture as skeletal lines and manually correct detection results · Measurements are estimates and may differ from official scoring results. Pro subscription (optional) · Unlimited saves, and comparison with earlier videos to track change across a season · Auto-renews and can be cancelled at any time. · No account is needed for anything — including Pro purchases. Signing in is optional, only to use Pro on your other devices and in the score sheet app. The app serves no ads, minimizes the data it collects, and is designed so that users can delete all of their data at any time. Terms of Use: https://kissnscore.com/app/terms Privacy Policy: https://kissnscore.com/app/privacy

Screenshots

Core by RTI4 screens
K&S Jump4 screens

Verdict

The call

The clearest difference is update cadence: K&S Jump at weekly against Core by RTI's every 3 weeks. K&S Jump also leads on iOS requirement (15.1 vs 17.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Core by RTI sells 2 in-app purchases, starting at $8.99 per month and K&S Jump sells 3 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Core by RTI ships an update every 3 weeks, K&S Jump weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Core by RTI versus K&S Jump: the parameters behind the verdict, then further details
ParameterCore by RTIK&S Jump
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size595 MB69 MB
Age rating4+4+
DeveloperMark FitzgeraldWonseok Woo

In-app purchases

2 purchases

Core by RTI

Subscriptions2
  • Core by RTI$8.991 Month
  • Core by RTI$89.991 Year
3 purchases

K&S Jump

Subscriptions2
  • Pro Monthly$11.991 Month
  • Pro Yearly$119.991 Year
One-time1
  • Launch Lifetime Pro$19.99

Questions

Is Core by RTI free?
Core by RTI is free to download, with in-app purchases available.
Is K&S Jump free?
K&S Jump is free to download, with in-app purchases available.
Do Core by RTI or K&S Jump have ads?
Neither Core by RTI nor K&S Jump shows ads.
Which is updated more often, Core by RTI or K&S Jump?
Core by RTI ships an update every 3 weeks, and K&S Jump weekly. Most recently, Core by RTI was updated on November 3, 2026 and K&S Jump on October 31, 2026.

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