LoadMuscle records 147,158 monthly visits with -25.4% month-over-month growth and Freemium pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.
AI workout planner that builds your whole training week around your gear and goals
High-quality human data for AI training, evaluation, and research
| Dimension / Metric | | |
|---|---|---|
| Official Domain | loadmuscle.com | prolific.com |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 147.16K (147,158) | 18.7M (18,697,671) |
| MoM Traffic Delta | -50.15K (-25.4%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (17.3%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 23.43K | 12.98M |
| User Rating | 4.2 | 4.6 |
| Supported Platforms | Website | Website |
AI workout planner that builds your whole training week around your gear and goals
Tell it your goal, level, equipment and available days, and the AI trainer builds a full week of training including exercises, sets, reps and minutes.
A very deep database of movements, each with instructions and a demo animation, covering barbell, dumbbell, cable, machine, calisthenics and mobility work.
Hundreds of ready programs across weight loss, home, strength, HIIT, calisthenics, core, glutes and legs, plus structured splits like full-body, upper/lower and push-pull-legs.
Follow each session, track what you complete, and let the plan adapt as your strength and consistency improve.
High-quality human data for AI training, evaluation, and research
Filter participants by detailed demographic, professional, and behavioural criteria and reach narrow or representative samples rather than a generic crowd.
Collect human preference data for model fine-tuning, run safety evaluations and red-teaming, and use a feedback API to plug humans into automated pipelines.
Attention checks, honesty screening, and approval workflows help filter out careless or fraudulent responses before you analyse results.
Publish a study and begin collecting responses quickly, with tooling that supports screening, quotas, and longitudinal designs.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
SpecialistAI data infrastructure for building production-grade models
SpecialistAI data infrastructure for building production-grade models
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
Offers deeper gym workout customization and exercise coaching, but lacks LoadMuscle's lightweight web-first accessibility.
Offers deeper gym workout customization and exercise coaching, but lacks LoadMuscle's lightweight web-first accessibility.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
SpecialistDNA-powered personalized fitness, nutrition and recovery
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
Provides structured adaptive training plans with strong community features, but focuses more on mobile app engagement.
Provides structured adaptive training plans with strong community features, but focuses more on mobile app engagement.
Tailored specifically for athletic and strength sport periodization, but less flexible for general fitness goals.
Tailored specifically for athletic and strength sport periodization, but less flexible for general fitness goals.
