3AK Sprinting vs Carus App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3AK Sprinting
This app provides advanced AI-powered tools for runners, including stride analysis, personalized coaching, and structured workout programs. It also features nutrition tracking and daily challenges to help athletes improve performance and build discipline.
- AI stride and form analysis
- Personalized AI coaching
- Custom workout programs
- Smart nutrition tracking
- Daily challenges
- Performance tracking and analytics
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Sprinting is the fastest way to get fit, 3AK makes it simple while guiding you every step of the way. You don't need hours of jogging to change your health. A few short sprint sessions a week can lift your cardio fitness, build lean muscle, and give you more energy — in a fraction of the time. 3AK builds your plan, coaches your technique, and tracks every step of your progress. WHY SPRINTING - Time-efficient — real results in 20–30 minutes, not endless miles - Heart & lungs — raise your VO2 max and cardiovascular fitness - Strength & power — build lean muscle that steady-state cardio can't - All-day burn — keep your metabolism working after you finish WHAT YOU GET - A personalized plan — adaptive sprint sessions built around your level and updated as you improve - Daily readiness check — tell 3AK how your body feels and it tunes the session to match - AI sprint analysis — breaks your run into phases (reaction, drive, acceleration, top-end, speed, finish) so you know exactly what to work on - Sprint Age — see how fit you really are, and watch it get younger as you train - Strength training — guided lifts that build the power behind your speed - Snap-to-log nutrition — photograph a meal for instant calories and macros NEVER SPRINTED? PERFECT. No track, no experience, no problem. 3AK meets you where you are and coaches you every step — from your first stride to your fastest. Start sprinting smarter. Download 3AK and feel the difference in weeks, not months. Join 50,000+ people already training with purpose. SUBSCRIPTION INFORMATION 3AK requires a subscription to access all features, including AI Stride & Form Analysis, AI Coaching, Custom Workout Programs, Smart Nutrition Tracking, Daily Challenges, and Performance Analytics. Subscription prices and plans are displayed within the app at the time of purchase. Payment is charged to your Apple ID account at confirmation. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. You can manage or cancel anytime through Apple ID Account Settings. Any unused portion of a free trial is forfeited when you purchase a subscription. LEGAL Privacy Policy: https://agate-elm-c96.notion.site/3AK-Privacy-Policy-2ef5370fd0a080b5b5e0f3923e47fe68?source=copy_link Terms of Service: https://app.termly.io/policy-viewer/policy.html?policyUUID=d3cbe04f-3efc-4612-86ab-83971d8c244e EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Carus App
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Carus helps swim teams run day-to-day operations from the pool deck. Directors get visibility into who’s working and what’s pending; coaches see their schedule, clock in when they’re on site, and keep time and pay organized. FOR DIRECTORS • See who’s clocked in and today’s shifts at a glance • Stay on top of pending time-off and shift-swap requests • Review time entries and payroll-related activity FOR COACHES • View upcoming shifts and schedules • Clock in and out with location verification at the pool • Track hours and stay connected with your team through messaging and notifications Carus is designed for teams that need structure. Questions? Use the support link on this page. We’re happy to help.
Screenshots
Verdict
The clearest difference is in-app purchases: Carus App at none against 3AK Sprinting's 10. Carus App also leads on iOS requirement (15.1 vs 18.0). 3AK Sprinting's advantage is chart position (#162 vs unranked). On price, update cadence, 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. 3AK Sprinting sells 9 in-app purchases, starting at $6.99 per 7 days. Carus App asks for nothing beyond the download.
3AK Sprinting ships an update every 5 days, Carus App every 9 days. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.
| Parameter | 3AK Sprinting | Carus App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (2.4K ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2.4K — better | — |
| Update frequency | Every 5 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Best chart rank | #162 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 66 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | CHRISTIAN MICAH JONES | KYLE ZONGHAO WANG |
In-app purchases
3AK Sprinting
- Weekly3 Days trial$6.997 Days
- Weekly Pro$9.997 Days
- Monthly$9.991 Month
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- Yearly2 variants$29.991 Year
- Yearly3 Days trial$29.991 Year
- Yearly1 Year trial$39.991 Year
- Yearly$39.991 Year
- Yearly3 Days trial$39.991 Year
- Yearly$49.991 Year
Carus App
No in-app purchases









