Pebble
How it works Say hello

A journal for the way you train.

Every app I tried felt like a lot of app. I just wanted to write my sets down, like in a notebook. So I built Pebble, which looks like one. It's a personal project, and I'm curious who else trains this way.

See how it works Join waitlist
Pebble: the set wheel open under Incline Press, with weight, reps and RPE columns.
Pebble: today's Push page. Incline Press and Pec Deck logged one line per set, with the rest timer running beside the last set.

I kept going back to Apple Notes.

Over the last few years of getting into lifting, I tried quite a few training apps. Some had features I liked, some had features I didn't, and none of them really stuck. I always drifted back to Apple Notes, thinking: what if this notebook could tell me what to lift next?

That's why I built Pebble.

  • Simple and quick, but remembers what I write.
  • Set my own goals, training style and programs.
  • Keep up with my changing philosophy, but still be able to show reliable metrics.
The same sets in Pebble: Incline Press, 100 lbs × 12, 110 lbs × 10, 110 lbs × 8, under the book from five days ago.

How Pebble works

Four core interactions that keep your training fast, honest, and completely in your control.

Quick Logging & Progression

Log & Warmup

One line per set with automatic warm-up ramps. Spin the wheel to dial weight and reps; it commits directly to your page without popup forms.

Automatic Timing

Rest Stopwatch

Rest tracking starts when you log. Deleting or re-adding sets preserves honest rest without manual timers.

Crowded Gym

Gym Swaps

Machine busy? Swap in one tap. Pebble maps equivalent movements and preserves your training momentum.

Flexible Routine

Skip & Roll

Skip an exercise or roll it over to tomorrow without guilt or broken schedules.

Feels simple, like a notebook.
More than a notebook.

One line per set, with full flexibility for the way you train.

Create supersets & dropsets

Link exercises into supersets or drop chains with bracket arrows right on the page.

Cardio too, seamlessly

Track StairMaster, Rowing, or cycling with real-time timers and clean progress lines.

Pebble: a yellow post-it open beside a set.

Post notes directly on sets

Pin seat adjustments, tempo cues, or pin placements right where you execute them.

Pebble: progression history and estimated one-rep max climbing over sessions.

Progression & e1RM history

Build honest long-term history for every movement and see your estimated max climb.

Set your own rules and preferences

My progression has never been uniform, so I wanted the rules and style to stay open-ended and keep pace with it.

Adjust rep windows, weight jumps, and effort thresholds.
Pebble: training style picker.
Choose your style: HIT, Controlled Intensity, Classic, or Volume.
Set your own gyms, dumbbell jumps, plates, and machine stacks.

The Pebble Deterministic Engine

The state of your workout lays out automatically from your style, equipment, and past book.

  • Training styleHIT1 hard set after warm-ups
  • Gym equipmentLife Fitness Pec Fly10–200 lb pins · +5 lb add-on
  • Book120 lbs × 12Pec Deck · 5 days ago
  1. 50 × 10
  2. 70 × 8
  3. 95 × 6
  4. 120 × 12 aim
Pebble: Pec Deck is started and its warm-up and working rows appear, laid out up to the working weight.
Hiten

A bit about me

I'm Hiten, a software engineer and AI researcher who lifts most days, mostly chasing an aesthetic physique.

I like tools that stay out of the way. Pebble is the one I wanted and couldn't find, so I built it, and I test every change on my own training first.

Train this way too?

Pebble isn't on the App Store yet. If you'd like to try it, leave your email and I'll reach out. Or just say hi. I'm always happy to talk training.

Or email me: hello@pebble.training