Comparison

Relentless vs FuelPlan

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

Head to head
About

Relentless

This app offers a structured mental training framework for athletes to enhance performance. It uses a studied approach to help athletes manage thoughts and emotions, leading to more consistent results in competitions.

Highlights
  • MAC framework for mental training
  • Guided lessons from professionals
  • Built-in journaling
  • Consistency trackers
  • Competition-focused profile
Features
Read full description

Relentless is a mental training and performance app built specifically for competitive athletes. This is not ‘motivation,’ it’s an actual framework so that even when the motivation fades, the tools are available to maximize performance. Studied framework: Relentless operates on the MAC framework, the only studied mental framework for athletes. M - Mindfulness: Noticing your thoughts, emotions, and feelings. Not making any changes. A - Acceptance: Allowing yourself to think through the negative ones without spiraling. C - Commitment: Directing those thoughts so that you are prepared in any situation. How it works: Relentless is backed by sports psychology designed to walk you through short, guided lessons with the aim of improving your mental ability in competitions. A higher mental ability has been proven to lead to higher and more consistent results across competitions. Features: “Workout of the Day” guided by a mental training professional Full library of lessons to practice each aspect of the MAC framework Built-in journal that helps you keep track of your mentality surrounding competitions 0-100 trackers for consistency across each aspect of the MAC framework Profile that stores your next competition date to keep you focused on the goal Subscription Relentless is premium after onboarding, via auto-renewable subscription (purchased in the app with Apple In-App Purchase). Per current product definition: Monthly includes a 3-day free trial; Annual includes a 7-day free trial. Pricing, currency, and trial eligibility vary by region and App Store price tier—confirm live numbers in App Store Connect and on the in-app purchase screen. Legal / support Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings → Apple ID → Subscriptions. Restore Purchases is available where applicable. Disclaimer Relentless is a training tool for athletes and is not a substitute for professional medical or mental health care. If you are in crisis, contact local emergency services or a qualified professional. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FuelPlan

Features
Read full description

PLAN IT Answer a few questions about your weight, goal, and race format (ultra, road, or backyard). FuelPlan builds carb, fluid, and sodium targets based on modern endurance fueling guidance. Add the organizer GPX, then place aid stations and drop bags directly on the course profile. PACK WHAT YOU OWN Track your gels, mixes, and bars in My Fuel. FuelPlan builds your kit from your real inventory, including flask-capped drink mix, and automatically deducts what you use after the race. Missing a product? Add it. RACE IT LIVE On race day, your plan becomes a live screen: what to take now, what’s next, where the next aid station is, and what to do there. Reminders keep firing even with your phone locked in your vest. Afterward, compare planned intake with what you actually got down.

Screenshots

Relentless4 screens
FuelPlan3 screens

Verdict

The call

The clearest difference is in-app purchases: FuelPlan at none against Relentless's 4. FuelPlan also leads on ads (none vs shown). Relentless's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence 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. Relentless sells 4 in-app purchases, starting at $4.99 per month. FuelPlan asks for nothing beyond the download.

UpkeepUpdate frequency

Relentless ships an update every 10 days, FuelPlan every 3 weeks. Both last shipped on October 31, 2026.

Scorecard3 real differences · 7 level
Relentless versus FuelPlan: the parameters behind the verdict, then further details
ParameterRelentlessFuelPlan
PriceFreeFree
Rating4.7 (85 ratings) — better—
Positive reviews93.8% of reviews—
Number of ratings85 — better—
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size59 MB7 MB
Age rating4+12+
DeveloperRelentless App LLCChristian Heggland

In-app purchases

4 purchases

Relentless

Subscriptions4
  • Relentless Premium Monthly3 Days trial$4.991 Month
  • Relentless Monthly Subscription3 Days trial$7.991 Month
  • Relentless Premium Annual7 Days trial$39.991 Year
Show 1 more
  • Relentless Annual Subscription7 Days trial$59.991 Year
None

FuelPlan

No in-app purchases

Questions

Is Relentless free?
Relentless is free to download, with in-app purchases available.
Is FuelPlan free?
FuelPlan is free to download, with no in-app purchases.
Do Relentless or FuelPlan have ads?
Relentless shows ads; FuelPlan does not.
Which is updated more often, Relentless or FuelPlan?
Relentless ships an update every 10 days, and FuelPlan every 3 weeks. Most recently, Relentless was updated on October 31, 2026 and FuelPlan on October 31, 2026.

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