
The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

FightCamp
FitOn
Boostcamp
Kaya
Caliverse
Fitbod
Strong.app
AI coaching for 23 combat and strength sports. Video analysis 0 to 100. Training plans, AI coach chat, competition prep.

Website, pricing, platforms and company facts side by side.
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| Website | diffyn.com | titans-grip.com |
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| Company | — | Startup from France · 2026 |
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In their own words, as submitted to SaaSHub.


No description of Diffyn yet.
Titans Grip is a suite of 23 AI-powered coaching apps built for athletes who train seriously. Each app is fully dedicated to a single sport, with a sport-specific AI coach persona (Coach Marcus for boxing, Professor Leo for BJJ, Coach Pavel for powerlifting, Coach Ilya for Olympic weightlifting,...
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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
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As answered by people managing Diffyn and Titans Grip.
Diffyn's answer
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Titans Grip's answer:
Titans Grip is a suite of 23 AI coaching apps, one fully dedicated to each sport. Most competitors are either a single generalist fitness app or a boxing-only / BJJ-only product. Titans Grip goes deep on sport-specific rules (IBA, Unified Rules, IBJJF, IPF, IWF, WKF, UWW, IFMA, FIAS and more), sport-specific coach personas, and AI video analysis trained on sport-specific movements. The scoring model rates technique 0 to 100 with frame-by-frame feedback, not just reps counted.
Diffyn's answer
Diffyn is the platform that specializes on both change management and multi-model analysis.
Titans Grip's answer:
Because the AI actually understands your sport. A boxing coach on FightCamp does not understand BJJ guard retention. A generalist fitness app like Freeletics does not score a sumo deadlift against IPF depth standards. Titans Grip ships a dedicated app per sport with a dedicated coach persona (Coach Marcus for boxing, Professor Leo for BJJ, Coach Pavel for powerlifting, Coach Ilya for Olympic weightlifting, Kru Somchai for Muay Thai). You get 24/7 chat, video analysis, training log, nutrition, and competition countdown built around your specific sport.
Diffyn's answer
React, Next.js, POSTGRESQL
Titans Grip's answer:
Swift 6 with strict concurrency, SwiftUI, SwiftData, iOS 17+. Backend on Supabase (Postgres with RLS). AI video analysis uses CoreML on device combined with cloud inference. AI coach chat powered by frontier LLMs fine-tuned per sport. RevenueCat for subscriptions. TestFlight and Fastlane for CI/CD.
Diffyn's answer
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Titans Grip's answer:
Serious amateur through advanced athletes in combat sports (boxing, MMA, BJJ, Muay Thai, judo, wrestling, karate, taekwondo, krav maga, kickboxing, kung fu, sambo, aikido), strength sports (powerlifting, strongman, Olympic weightlifting), and fitness disciplines (CrossFit, calisthenics, bouldering, bodybuilding, Pilates). Ages 16 to 45, training 3+ times per week, often prepping for competitions or belt tests. Users who want real coaching feedback but cannot afford a private coach.
Diffyn's answer
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Titans Grip's answer:
Titans Grip started with a simple observation: if you train boxing, you need a boxing app. If you train BJJ, you need a BJJ app. Generalist fitness apps do not cut it for technique-heavy sports. We built one app per sport, each with AI trained on the sport rules, terminology, and scoring criteria. Part of Doved Studio, an indie studio focused on vertical AI tools for niche audiences.
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