Temper is the AI strength coach that writes your program, watches you train, and adjusts every week based on how you actually perform. Block periodization, progressive overload, your equipment, your injuries, your cycle.
Launching soon on iOS. Early bird members lock in $14.99/mo for life (standard price will be $29.99).
Nobody else in consumer fitness does this. Human coaches charge $150-$300/month to write a program this personalized. Temper writes yours live during onboarding.
Goals. Current 1RMs. Days per week. Equipment. Injuries. Weak points. Schedule. Cycle if relevant.
Block 1 — Foundation. Block 2 — Accumulation. Block 3 — Intensification. Deload. Realization. All five blocks, 16 weeks, appear one at a time.
Every week the next 7 days get re-written based on how you actually trained. Sunday Review every 7 days. Plan learns you across months.
Every block has a phase, a volume strategy, a progression scheme, and primary lifts. All of it generated for your exact profile.
16 weeks · 5 blocks · built for a 275 lb squatter aiming to hit 315
Wave 1 — Accumulation
· Weeks 1-4
Introduction · Volume: MEV → MAV · 65-85% TM, AMRAP top set
Wave 2 — Build
· Weeks 5-8
Accumulation · Volume: MAV · 70-90% TM, AMRAP top set
Wave 3 — Intensify
· Weeks 9-12
Intensification · Volume: MAV → MRV · 75-95% TM, heavy singles
Deload
· Week 13
Deload · Volume: Reduced · RPE 5-6, 40% TM
Test Week
· Weeks 14-16
Realization · Volume: Reduced · Build to new 1RMs
Programming is the hero. Everything else feeds it.
Block periodization (MEV → MAV → MRV). Introduction, accumulation, intensification, realization, deload. Written for your goals, lifts, schedule, equipment, and injuries in 30 seconds.
Every week your next 7 days get rewritten based on what you actually did. Hit your reps at target RPE? Loads go up. Missed? Hold or back off. Not a static plan.
A real weekly review. Observations about how you trained. Predictions the coach commits to, graded against what happens. Over months, it starts to know you better than you know yourself.
Upload labs from LabCorp, Quest, LifeLabs, Dynacare, Function, InsideTracker, Everlywell. Patterns get fed into your coach so it can connect ferritin, testosterone, or cortisol dips to the way you actually trained.
Optional. Your phase gets injected into Sunday Review and weekly regen. Push during follicular, back off in luteal if you want. No other strength coach does this.
"Squat 315 for 3, RPE 8." Hands chalked up, phone across the room. Voice-first is how logging actually gets done in the gym.
Film a set, pick the exercise, get timestamped form callouts. Bar path, depth, bracing, knee tracking — AI second opinion.
Have a coach who already writes your plans? Upload the PDF, AI parses it, it lands on your training calendar. Push or swap days when life happens.
Full gym, home rack, hotel dumbbells only. Tell the coach what you have and every exercise prescribed will be one you can actually do. Switch profiles when you travel.
AI-generated programs exist. So do weekly check-ins with human coaches. Temper is the only one that ships all of it in one place.
| Feature | Temper | Juggernaut AI | RP Hypertrophy |
|---|---|---|---|
| AI-generated 16-week periodized program | ✓ | ✓ | ✓ |
| Handles any goal / vague inputs / edge cases | ✓ | — | — |
| Weekly regen from real performance data | ✓ | ✓ | — |
| 40+ equipment items, multi-profile | ✓ | — | — |
| Respects injuries + avoids at generation time | ✓ | — | — |
| Sunday Review / longitudinal coach memory | ✓ | — | — |
| Bloodwork integration (multi-provider) | ✓ | — | — |
| Cycle-aware for female lifters | ✓ | — | — |
| AI form check from video | ✓ | — | — |
| Voice logging | ✓ | — | — |
| Native iOS + Android app (not web-only) | ✓ | ✓ | — |
| Price / mo (early bird) | $14.99 | $35 | $25 |
Comparison based on publicly available features as of 2026. Juggernaut AI is a native mobile app with algorithmic programming. RP Hypertrophy is a web app (no native iOS/Android). Future and Caliber are human-coach-over-text services. Hevy is a workout logger.
Free tier is a real app. Pro unlocks the full AI coach. Early bird pricing locked for life.
Workout logging, nutrition tracking, progress analytics, Apple Health sync. A real app, not a demo.
16-week AI-generated periodized program, weekly regen, Sunday Review, bloodwork, cycle-aware coaching, form check.
Launching soon on iOS. Android shortly after. Drop your email for launch access.
No spam. Just launch access when we ship.