01
Your data, your Drive.
Trainerize stops your card and the client history is gone. Coach Sheet writes everything to a folder in your Google Drive. Cancel us, keep your records, open them in Sheets next morning.
Issue 01 — Pre-launch · Methodology Quarterly
Coaching software that runs on your spreadsheet.
Coach Sheet wires Google Sheets into a coach-client tool. Multi-week workout plans. Inline client comments next to each set. Automatic e1RM and macro recalculation. A one-click Save Week that ends the Sunday admin grind. Your data stays in your Drive. Fifteen dollars a month, flat.
14-day Pro trial. Founder's Plan ($99 lifetime) open while we build.
drive.google.com / coaching / clients / #1-anna / Workout Plan
Wk 6 · saved 12s ago Anna · Workout Plan · Week 6 · Day 1, Push
| Exercise | Load | Sets×Reps | RPE | Achieved |
|---|---|---|---|---|
| BB Bench Press | 102 kg | 4×6 | 9 | last set 105×5, clean |
| BB Overhead Press | 52 kg | 4×6 | 8 | +2.5kg vs last week |
| Lat Pulldown | 68 kg | 3×10 | 7 | felt easy, +1 rep last set |
| Cable Row | 55 kg | 3×10 | 7 | ··· |
| Lateral Raise | 10 kg | 3×12 | 6 | ··· |
Total volume: 11,420 kg · +6.3% vs Wk 5 e1RM Bench: 122 kg (PR)
From the field — r/personaltraining, Nov 2025
"My Sunday routine was an absolute nightmare. I was spending five to ten hours every weekend just manually copy-pasting last week's weights for my online clients."
One coach in a Reddit thread. He built his own Apps Script. We turned the idea into a tool any coach can install.
Section II — Principles
Four reasons we exist.
Built from 138 Reddit posts and 50 trainer interviews. The tools we surveyed got one thing right and several things wrong. Here are the ones we corrected.
02
Flat fifteen. Not per-client.
Trainerize charges $40-180 depending on roster. My PT Hub is closest at $48 flat. We are $15. Free tier supports your first client.
03
No "AI workout generator."
You are the coach. The tool's job is fewer minutes per set, not a sparkle button that drafts a mesocycle from a prompt. We do not ship those.
04
Methodology over magic.
RPE bands you can configure. Three-test PR protocol. Three-day moving average for weight. Volume landmarks (MEV, MAV, MRV) where you set them. Every formula is editable.
Section III — Free tools
Calculators we built for ourselves first.
Each formula transparent, with a worked example. Free, no signup. Same engines that ship inside Coach Sheet.
See all calculators →TDEE calculator
Mifflin-St Jeor + activity multiplier
Worked example: 28 yo, 178 cm, 68 kg, muscle gain.
1RM calculator
Epley · Brzycki · Lombardi
Three formulas side by side. Pick the one that fits your reps. RIR-aware.
RPE & RIR converter
RPE → load %1RM
Map prescribed RPE to load %. Turn last week's RIR into this week's top set.
FFMI calculator
Fat-free mass index, height-adjusted
With body-fat input via Navy or Jackson-Pollock.
Section IV — Reading
Three guides worth your morning coffee.
Long-form, with citations, written for trainers who already know what RIR means. No fitness-journey filler.
Read all guides →The Save Week workflow
12 min read
How one trainer cut Sunday admin from 5-10 hours to 12 minutes by scripting his Google Sheet.
RPE vs RIR for programming
9 min read
When to prescribe RPE 8 vs RIR 2 (and when those are the same thing).
Why your client data lives in your Drive
7 min read
A Trainerize cancellation locks your client history. Sheets-native means cancel anytime.
Closing
Built in public. Founders welcome.
Pre-launch. Founder's Plan is $99 once, lifetime access. We ship weekly. Reddit and Twitter first. If we fail to ship, you keep your sheets either way.