Comparison

Relentless Trainer vs Palaestra OS

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

Head to head
About

Relentless Trainer

This AI-powered coach offers personalized daily workouts for a wide range of fitness disciplines, adapting to your current state and goals. It includes nutrition plans, exercise demonstrations, and integrates with health apps and smart devices.

Highlights
  • AI-powered personalized workouts
  • Nutrition program for weight loss/muscle gain
  • Over 1200 exercises with videos
  • Flexible training time and equipment
  • Specialized training tracks
  • Health app and smart device integration
Features
Read full description

Relentless Trainer: Your AI-Powered Personal Coach Born from the CrossFit® community and backed by over 10 years of data, we present Relentless Trainer - the first AI trainer for CrossFit®, Weightlifting, Gymnastics, Strength Training, Endurance sports, Mobility, Hyrox, Bodybuilding, Hybrid training, ATHX and Calisthenics. Race-optimized goal engine for Running, Skiing, Biking and Rowing. We even have Tactical Fitness, a specialized track for military and rescue staff. Forget generic training programs. Relentless Trainer adapts your workout daily based on: Your current state Your fitness level Your recent training history Your strengths and weaknesses Features: Nutrition program for weight loss or muscle mass Personalized workouts Over 1200 exercises with descriptions and videos Flexible training time and equipment Specialized training tracks Integration with health apps and smart devices Whether you want to improve your Snatch, Squat, Bench press, rowing, running, pull-ups, or muscle-ups, the trainer has you covered. Relentless Trainer is a month-to-month subscription service, easily cancellable anytime. No long-term contracts or cancellation fees - we just want you to love training! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Palaestra OS

Features
Read full description

O Palaestra OS é o sistema operativo do teu centro fitness, agora no telemóvel. Chega de folhas de inscrição, grupos de WhatsApp para apurar tempos e quadros brancos apagados. Com o Palaestra OS reservas a tua aula, vês o treino do dia e registas o teu resultado, tudo num só sítio. O QUE PODES FAZER Reservar aulas em segundos. Vê o horário da tua box, reserva o teu lugar e gere a tua presença. Recebes a confirmação na hora. Ver o WOD antes de chegar. O treino do dia aparece com os movimentos, as repetições e as cargas prescritas. Chegas preparado. Registar o teu resultado. No fim do treino, regista o teu tempo, as tuas reps ou a tua carga. Fica tudo guardado no teu histórico. Aparecer no leaderboard ao vivo. O teu resultado entra no leaderboard da box, projetado na TV em tempo real, com as melhores marcas por categoria. Acompanhar a tua evolução. Vê os teus recordes pessoais (PRs) e o teu progresso ao longo do tempo. PARA QUEM É Para atletas de CrossFit e ginásios funcionais que querem uma experiência simples, rápida e ligada à comunidade da sua box. Se a tua box usa o Palaestra OS, esta app é tudo o que precisas. A tua box continua a funcionar como sempre. O Palaestra OS junta as inscrições, os treinos e os resultados numa só experiência, para ti e para os teus coaches.

Screenshots

Relentless Trainer4 screens
Palaestra OS4 screens

Verdict

The call

The clearest difference is in-app purchases: Palaestra OS at none against Relentless Trainer's 9. Relentless Trainer's advantage is update cadence (every 3 days vs monthly). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Relentless Trainer sells 9 in-app purchases, starting at $9.99 per month. Palaestra OS asks for nothing beyond the download.

UpkeepUpdate frequency

Relentless Trainer ships an update every 3 days, Palaestra OS monthly. The most recent releases landed on October 30, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Relentless Trainer versus Palaestra OS: the parameters behind the verdict, then further details
ParameterRelentless TrainerPalaestra OS
PriceFreeFree
Rating4.9 (15 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 3 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size227 MB35 MB
Age rating4+4+
DeveloperRelentless Method ABDavid Sardinha Alves

In-app purchases

9 purchases

Relentless Trainer

Subscriptions9
  • Dash Monthly Subscription14 Days trial$9.991 Month
  • Core Monthly Subscription14 Days trial$17.991 Month
  • Monthly14 Days trial$23.991 Month
Show 6 more
  • Dash Quarterly Subscription14 Days trial$23.993 Months
  • Core Quarterly Subscription14 Days trial$44.993 Months
  • Quarterly14 Days trial$59.993 Months
  • Dash Yearly Subscription14 Days trial$79.991 Year
  • Core Yearly Subscription14 Days trial$149.991 Year
  • Yearly14 Days trial$195.991 Year
None

Palaestra OS

No in-app purchases

Questions

Is Relentless Trainer free?
Relentless Trainer is free to download, with in-app purchases available.
Is Palaestra OS free?
Palaestra OS is free to download, with no in-app purchases.
Do Relentless Trainer or Palaestra OS have ads?
Neither Relentless Trainer nor Palaestra OS shows ads.
Which is updated more often, Relentless Trainer or Palaestra OS?
Relentless Trainer ships an update every 3 days, and Palaestra OS monthly. Most recently, Relentless Trainer was updated on October 30, 2026 and Palaestra OS on October 15, 2026.

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