Comparison

J80 vs Rugby Prep

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

Head to head
About

J80

This app offers a structured 80-day fitness transformation program with daily workouts and nutrition guidance. It focuses on tangible progress through dated photos, measurements, and validated sessions, emphasizing real results over promises.

Highlights
  • 80-day transformation program
  • Guided workouts (home/gym)
  • Daily progress tracking
  • Simple nutrition guidance
  • Proof of progress (photos, measurements)
  • Apple Health integration
Features
Read full description

J80. Jour 80. Tout peut changer en 80 jours. Le marché du fitness vend des promesses. J80 te propose autre chose : un protocole de transformation vécu en vrai, avec une date butoir. Pas de méthode miracle, pas de raccourci. Un cadre, du travail, et la preuve qui se construit jour après jour. CE QUE TU TROUVES DANS J80 : - Le 80 : le programme de transformation phare, structuré jour par jour, renouvelable. Ton premier 80, puis le suivant. - Des entraînements guidés adaptés à ton niveau, débutant ou confirmé, en salle ou à la maison. - Un accompagnement nutrition simple et applicable au quotidien, sans interdits absurdes. - Le chrono : chaque jour compte et se compte. Jour 1, jour 23, jour 80. Tu sais toujours où tu en es et ce qu'il te reste à faire. - Tes preuves : photos datées, mesures, séances validées. Pas d'avant/après truqué, ta progression réelle. POUR QUI : Pour celles et ceux qui veulent se transformer sans se raconter d'histoires. Tu n'as pas besoin d'être déjà sportif. Tu as besoin de 80 jours et de faire le travail. NOTRE CONVICTION : La preuve avant la promesse. On ne te dit pas « crois-nous ». On te dit « regarde, puis essaie ». Jour 1, c'est aujourd'hui. APPLE HEALTH Personnalisez votre expérience en connectant Apple HealthKit pour le suivi de la condition physique. NOTE :L'application ne créée aucune donnée. Elle lit simplement les données de l'application Santé (poids, taille, activités (par activité : date, durée, type d'activité) effectuées par l'utilisateur). Vos données sont stockées dans l'app Health (HealthKit), et J80 ne collectera jamais vos données de santé personnelles. Voir la politique de confidentialité complète pour plus de détails. CGU : https://api-j80.azeoo.com/v1/pages/termsofuse Politique de confidentialité : https://api-j80.azeoo.com/v1/pages/privacy

About

Rugby Prep

This app provides personalized rugby strength and conditioning programs designed by an elite coach. It offers guided sessions with technique explanations, an in-app assistant for questions, and tracks your progress to adapt future workouts.

Highlights
  • Personalized multi-week programs
  • Guided sessions with timers
  • Exercise demonstration videos
  • In-app assistant for questions
  • Progress tracking and logging
  • Calibrated to position and level
Features
Read full description

Rugby Prep's programs come from Sam Durieux, a strength and conditioning coach who specialises in rugby: a master's degree in sports performance training and optimisation, strength and conditioning coach for the LOU Rugby under-18 squad, and head of strength and conditioning at the Lyon elite youth academy, from 2022 to 2024. You are not downloading a catalogue of exercises: you are following his method, calibrated to your position, your level, and where you are in the season. THE METHOD OF A RUGBY SPECIALIST Build power without losing speed. Absorb the load of a full season. Come back stronger after a break. These principles are not improvised: they come from working with players on the ground, and they are what structures every cycle you receive. A PROGRAM BUILT FOR YOU A few questions about your position, level, goals, and point in the season, and you get a complete multi-week program: cycles, sessions, exercises, loads, and rest periods. Nothing generic — all of it calibrated for you. GUIDED SESSIONS, START TO FINISH Start your session and follow it set by set. Built-in timer, demonstration videos, and a player that stays visible even when minimized. You always know what to do, and how much. TECHNIQUE EXPLAINED, NOT JUST SHOWN For every exercise: the right movement, the common mistakes, the points to watch. That is what separates a session done from a session done well — and what keeps you off the treatment table. ANSWERS WHEN YOU NEED THEM A question about an exercise, a doubt about your technique, a session to adapt? The in-app assistant answers immediately, taking into account your program, your history, and how you have been feeling. YOUR PROGRAM FOLLOWS YOUR FORM At the end of each session you log your fatigue, how hard it felt, and your condition that day. The next cycle takes it in: the load adjusts to what your body actually absorbs, not to what a plan assumed. FULL PROGRESS TRACKING Session history, volume and intensity, physical tests (speed, power, endurance), and weight tracking. You see in black and white what you have built, week after week. BUILT FOR RUGBY, NOT ADAPTED TO IT Power, speed, agility, core strength, endurance: exercises chosen for the demands of the game, organized by blocks (strength, cardio, technique). WHY THIS APP EXISTS In Sam Durieux's own words: "After several years working in elite rugby, I chose to put what I know at the service of amateur players, with programs built for those profiles." Available in French, English, German, Spanish, Italian, and Russian. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

J804 screens
Rugby Prep4 screens

Verdict

The call

The clearest difference is review sentiment: Rugby Prep at 85% against J80's 0%. Rugby Prep also leads on update cadence (every 3 days vs every 6 weeks). J80's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, monetization model, 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. Rugby Prep sells 1 in-app purchase, starting at $34.99 per month. J80 asks for nothing beyond the download.

UpkeepUpdate frequency

J80 ships an update every 6 weeks, Rugby Prep every 3 days. Both last shipped on October 28, 2026.

Scorecard4 real differences · 4 level
J80 versus Rugby Prep: the parameters behind the verdict, then further details
ParameterJ80Rugby Prep
PriceFreeFree
Positive reviews0.0% of reviews84.6% of reviews — better
Update frequencyEvery 6 weeksEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better16.4
Further details — not scored
Size181 MB88 MB
Age rating4+4+
DeveloperAZEOOJean Durieux

Customer experience

J80

Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

Rugby Prep

Written reviews13 reviews
Positive84.6%
Neutral7.7%
Negative7.7%

In-app purchases

None

J80

No in-app purchases

1 purchases

Rugby Prep

Subscriptions1
  • Rugby Prep7 Days trial$34.991 Month

Questions

Is J80 free?
J80 is free to download, with no in-app purchases.
Is Rugby Prep free?
Rugby Prep is free to download, with in-app purchases available.
Do J80 or Rugby Prep have ads?
Rugby Prep shows ads; J80 does not.
Which is updated more often, J80 or Rugby Prep?
J80 ships an update every 6 weeks, and Rugby Prep every 3 days. Most recently, J80 was updated on October 28, 2026 and Rugby Prep on October 28, 2026.

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