JYM Supplement Science Pre JYM High-Performance Pre-Workout vs Transparent Labs STIM-FREE Pre-Workout
The verdict
- Transparent Labs STIM-FREE Pre-Workout scores 21.0 points higher than JYM Supplement Science Pre JYM High-Performance Pre-Workout on formula: 100.0 (S tier) vs 79.0 (B tier).
- Caffeine: 300 mg vs 0 mg.
- Both labels have 0% hidden in blends.
- STIM-FREE Pre-Workout is $0.55 cheaper per clinically dosed serving at $1.67, compared with $2.22 for Pre JYM High-Performance Pre-Workout.
- Testing: Pre JYM High-Performance Pre-Workout is untested; STIM-FREE Pre-Workout is Verified (T2).
- Largest panel dose differences for Pre JYM High-Performance Pre-Workout vs STIM-FREE Pre-Workout: Betaine Anhydrous: 1,500 mg vs 2,500 mg; L-Citrulline: 4,000.2 mg vs 5,333.6 mg; L-Tyrosine: 1,500 mg vs 1,000 mg.
- Bottom line: STIM-FREE Pre-Workout has the higher formula score and the lower comparable cost.
Straight from the label math; no editorial picks. We don't earn a commission from store links on this site.
| Metric | ||
|---|---|---|
| Scores | ||
| Tier | B · 79.0 | S · 100.0 (best) |
| Overall score | 58.9 | 91.3 (best) |
| Dose | 80.0 | 100.0 (best) |
| Transparency | 100.0 | 100.0 |
| Pump | 60.0 | 60.0 |
| Focus | 87.5 | 90.0 (best) |
| Endurance | 76.6 | 100.0 (best) |
| Caffeine | 300 mg · 🚀 Heart Go Brrr | 0 mg · 😴 Night Shift |
| Lowest price | $49.99 | $49.99 |
| Per clinically dosed serving | $2.22 · 💸 Pricey | $1.67 · 👍 Fair Price (best) |
| Real servings | 22.6 of 30 | 30 of 30 (best) |
| Testing | Untested | T2 · Verified (best) |
| Ingredients (per graded serving) | ||
| L-Citrulline (counts toward the tier) | 4,000.2 mg100% ✓ | 5,333.6 mg100% ✓ |
| Caffeine (counts toward the tier) | 300 mg100% ✓ | missing |
| Betaine Anhydrous (counts toward the tier) | 1,500 mg60% | 2,500 mg100% ✓ |
| L-Tyrosine (counts toward the tier) | 1,500 mg100% ✓ | 1,000 mg100% ✓ |
| Taurine (counts toward the tier) | 1,000 mg100% ✓ | 1,300 mg100% ✓ |
| L-Theanine (counts toward the tier) | missing | missing |
| Beta-Alanine | 2,000 mg63% | 4,000 mg100% ✓ |
| BioPerine (Black Pepper Extract) | 5 mg | 5 mg |
| Huperzine A | 50 mcg100% ✓ | 100 mcg100% ✓ |
| Alpha-GPC | 150 mg50% | — |
| Creatine Monohydrate | 1,780 mg59% | — |
| L-Isoleucine | 1,500 mg | — |
| L-Leucine | 3,000 mg | — |
| L-Valine | 1,500 mg | — |
| Potassium | — | 100 mg |
| Senactiv | — | 50 mg |
| Sodium (Electrolytes) | — | 150 mg |
= best in the row. = part of the ideal pre and counts toward the tier. Percentages are of the clinical reference dose.
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