RELENTLESS Online Coaching vs Interval Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RELENTLESS Online Coaching
This app provides elite online coaching for busy professionals and former athletes seeking structure, accountability, and real fitness and nutrition results. Access world-class coaches who customize programs to your lifestyle and goals, all through a high-performance system.
- Elite online coaching
- Personalized fitness programs
- Customized nutrition plans
- Direct coach access
- Accountability features
- Lifestyle integration
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RELENTLESS Online Coaching Elite Coaching. Real Results. Anywhere. RELENTLESS is a high-performance online coaching system for busy professionals and former athletes who want structure, accountability, and real results — without flipping their life upside down. Created by the team behind HYBRID Gym LA, RELENTLESS gives you direct access to world-class fitness and nutrition coaches who tailor every aspect of your program to your lifestyle and goals. * App access requires paid coaching plan Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy
Interval Trainer
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With Interval Trainer, you can create timed interval exercise workouts, and do the workouts with both a visual workout countdown display and voice prompts to help you know where you are in your workout.
Screenshots
Verdict
The clearest difference is in-app purchases: Interval Trainer at none against RELENTLESS Online Coaching's 1. RELENTLESS Online Coaching's advantage is update cadence (every 5 weeks vs every 15 months). On price, ads, device support and iOS requirement 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. RELENTLESS Online Coaching sells 1 in-app purchase, starting at $300.00 per month. Interval Trainer asks for nothing beyond the download.
RELENTLESS Online Coaching ships an update every 5 weeks, Interval Trainer every 15 months. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | RELENTLESS Online Coaching | Interval Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks — better | Every 15 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 50 MB | 40 MB |
| Age rating | 17+ | 4+ |
| Developer | HYBRID MMA & FITNESS LLC | Luke Taylor |
In-app purchases
RELENTLESS Online Coaching
- Monthly Coaching$300.001 Month
Interval Trainer
No in-app purchases
Questions
Is RELENTLESS Online Coaching free?
Is Interval Trainer free?
Do RELENTLESS Online Coaching or Interval Trainer have ads?
Which is updated more often, RELENTLESS Online Coaching or Interval Trainer?
Other comparisons
