Ariko

Open Pebbles on the web and a week of your life is a wall of polaroids: white cards, a stone overhanging each top edge, names in a handwriting font, a small tilt when the pointer passes. Open it on an iPhone or an Android phone and the same week is a list of rows. On 11 October 2026 I was unhappy with both, for opposite reasons, and spent the evening finding out what a week should look like instead.

What the Path was that morning

The Path is the screen where a week of pebbles is laid out. On the web it has been the polaroid wall since milestone M58 (August 2026): a white card per pebble, the photo edge to edge, the name in the Caveat handwriting font, soul avatars, two columns.

On iOS and Android, which mirror each other one to one, it is rows: a 56 pt stone thumbnail (96 pt at intensity 3), the name, "TUESDAY · 14:32" in small caps, and when there is a photo, a 64 pt rotated snapshot on the right.

The stone itself had just diverged between surfaces. Since 27 September, every iOS surface draws a lit, material stone with Metal shaders: lava for a lowlight, river pebble for a neutral moment, gem for a highlight, the glyph carved in, the light following the phone's tilt on the detail page. The Android and web port had not started. My stated direction at the time was "client draws the pebble, server keeps only the glyph", which is where this touches how a pebble gets rendered.

Three days earlier, on 8 October, I stepped back and made a strategy audit to set a frame. I positioned Pebbles as "the private memory of your life with the people in it", with a north star of "life with five people, not broadcast to five hundred". I named the stone aesthetic and the souls as strengths to protect, put a printed yearly book (the Cairn) and a weekly Cairn on the
roadmap, and ruled out feed mechanics, ads and a gamified feel. The two things I asked to protect, the stone and the souls, are the two things the Path puts on screen.

Precious, and cheap

This is the statement I opened the session with:

I'm very unsatisfied with the polaroid display of the web app, and very unsatisfied with the rows display in the mobile apps. […] What I don't like with the rows is that it's not enough "precious" or "collectable", the polaroids are far better. But the polaroids look cheap, something is very amateur in the design: between interface (soulless) and skeumorphic (unrealistic). The pebbles are ugly on web in comparison with iOS, but I'm still wondering if the super design we shaped in iOS is a good idea.

The two complaints pull in opposite directions: the rows are not precious enough; the polaroids are better at that and look cheap, caught between interface and skeuomorphism. Under both sat a doubt about the lit stone on iOS.

I asked an orchestrating agent to... orchestrate five Opus sub-agents on 5 totally distinct direction I briefed: a bold one, a polished one, an aspirational one, a unique one, and a singular one, matching the philosophy of pebbles.

The brief

The orchestrator helped me write one brief, shared by all five agents. Every pebble had to show the stone with its glyph, the name, the date and time, and the souls. A photo had to appear in its own format (portrait 2:3, landscape 3:2, square, 16:9) and never be cropped to a uniform frame unless the agent defended it. A pebble without a photo had to look as intentional as one with. Intensity and valence had to be readable. The layout had to hold zero to twenty pebbles, at 390 px first, then 900 px and wider, light and dark. Each agent had to take a position on the lit-stone render. And I added one line: "Do NOT produce a polaroid, a card list, or a generic social card."

Everyone worked on the same fixture week, Monday 5 to Sunday 11 October 2026: eleven pebbles, five souls (Mara, a partner; Elio, a son of six; two friends; Bruno, a dog), five photos in four formats, from a 16:9 rooftop birthday to a portrait of Mara on the seawall. Six pebbles had no photo: Elio's first tooth, the rent going up, not sleeping at 03:10, saying no to an extra project, a call with grandma that went quiet, Bruno asleep on my feet.

The agents got real assets, not placeholders: the iOS outline silhouettes, the engine shapes, six seed glyphs, the seven emotion palettes and the web app's sandbox photos. They reported two problems in them on the way: in large-neutral.svg the outline is not the first stroked path, and the identity and travel seed glyphs are the same drawing. Each agent delivered a working index.html of the whole week and a note of at most 900 words.

Five directions, deliberately far apart

The orchestrator assigned the five metaphors; the agents ran in parallel, each for 17 to 28 minutes and 200,000 to 280,000 tokens.

The Vitrine made the week a drawer in a collector's cabinet and each pebble a specimen in a fitted tray: the stone in a recess cut to its silhouette, the photo as a numbered plate at its own ratio, a double-ruled museum label with an accession number (2026.41.7). References: Deyrolle, the Pitt Rivers Museum, Naturalis, Riker mounts. It kept the lit stone, under one cabinet light. Its own doubts: a twenty-pebble drawer is long, and "lowlight, medium" next to a grief moment reads clinical.
The Riverbed drew the week from above as raked gravel: Monday upstream, Sunday downstream, each day a reach between riffles, the stones at real relative size (90, 128 and 178 px on a phone) with rake lines parting around them, a photo as a basin cut into the ground at its exact proportions. References: Ryōan-ji, Carlo Scarpa's basins at the Brion tomb, Swisstopo map sheets, Andy Goldsworthy. It kept the lit stone — "the stone is the only thing with a body, everything else is hairline ink." Tapping a stone sends ripples across the bed. Its doubts: about 4,800 px of scrolling on a phone for eleven pebbles, and the cost of drawing it.
The Journal set the week as a gathering of the printed Cairn, read while it is being typeset: a title page, the persons of the week with page numbers, the contents, entries on true 2:3 pages. The stone is an ink seal, and valence is how the seal is printed: solid, open line, or hatched, after the relief and intaglio of Chinese seal carving. Other references: Tschichold, Irma Boom, Apartamento. On the stone it wrote: "I tried an SVG-lit stone and it looked like a bevelled cookie, the same costume problem as the polaroids." The Metal render would be reserved for the opened entry and one frontispiece per printed book. Its doubt: pagination is real typesetting.
The Deck made each pebble a card in a 7:12 tarot proportion, with a printed border, a corner index repeated upside down, one 2:3 picture window, and, for a pebble with no photo, a "face card" whose whole illustration is the stone. Painted card edges, thicker for heavier moments, show where the week weighed. References: the Tarot de Marseille, Bicycle 808, hanafuda, Smythson's coloured edges. It printed the stone flat in two inks, keeping the render for the lifted card. Its doubts: smaller pictures (a landscape band about 225 px wide on a phone), thumbing is slower than scanning, and card baggage (swipe-to-judge, packs, rarity) to refuse.
The Constellation organised the week by who was there. Each person is a thread, mine the unbroken line down the middle; a pebble is a knot where the threads of the people present converge; a photo hangs from the knot on those same threads. References: Cellarius's star atlas, Harry Beck's Underground diagram, Chiharu Shiota, Ryuichi Sakamoto's async. It kept the lit stone at bead scale, without animation. Its doubts: about 5,350 px on a phone, lanes 13 px apart that tangle with six or more regular people, and a sparse solo week that could read as judged.

The orchestrator screenshotted all five at 390 and 1280 px, published them in one private hub artifact, and gave its reading: the real split was objects versus page. The Vitrine, Riverbed and Constellation keep the lit stone and give it what it lacked on the web, a ground and one light. The Journal and Deck print it flat and keep the render for the moment a pebble is opened. Both camps were honest, which the polaroid was not. It recommended the Journal as the Path on all three surfaces, with the Riverbed as challenger.

What I kept from each

I did not take the recommendation. I took pieces:

I like the summary idea of the Journal: people of the week and raw table of
contents list are perfect for introducing a passed week. I love the Riverbed
background that fits with the timeline, but I wonder if it's not a little bit
hard to implement, also pebbles stones are too big and the overall is very
messy on mobile. I also like the transitions per day, like a seam, and the
ripple animation when tapping a stone. I absolutely love the deck card design
but there is still the same issue: portrait pictures fit perfectly but no
geometric shapes appear in comparison with other; while landscape and square
photos don't fit very well, so we might consider having cards of different
sizes, it's not a problem I guess, actually. No-photo cards placeholder is interesting, but also could be compacted to avoid too big empty cards. I love the constellation timeline, but I guess it's not suitable (if you record pebbles with 14 people for instance). However, the timeline is cool, and maybe we could have the pebble in the timeline, and the card deck if there is a photo, otherwise, just the name, time and people.

Nothing was kept whole: the Journal's opening without its pagination, the Riverbed's ground without its stone sizes, the Deck's card sized to the photo, the Constellation's timeline without a thread per person. I asked for two more agents to combine those.

Two syntheses from one shape

The orchestrator turned those picks into one shape: the Journal opening; one vertical timeline, mine; the riverbed ground made cheap, with day seams; the stone on the timeline at 36 to 72 px; with a photo, a Deck card whose height follows the photo; without one, a compact entry with no box; a ripple on tap; one to fourteen people on a pebble. It gave the two agents opposite stances, one leaning toward landscape, one toward page.

The Stream (26' · 311kt) ran a band of raked gravel down the centre of the screen, karesansui style. A first attempt with a pale band and a centre line read as a road with lane markings and was dropped. Stones are lit, 44 to 70 px, on the water, and cards hang below them. In the persons of the week, each person carries a strip of seven dots for the days they appear. Its doubts: the band may not read as water, and the time is stated three times per pebble.
The Spine (18' · 263kt) set the timeline as a book's margin: one line down the left, stones on it at 30, 40 and 52 px as flat ink seals inside one to three raked rings, each day a hairline seam with riffle teeth and the date in the margin. A photo hangs a Deck card off its stone, and the card drops its own large seal, because the stone on the line already is one. A pebble without a photo is set as type with no box, valence as weight or italic. On a wide screen it becomes a spread, the opening pinned on the left page, the line in the gutter. Tapping sends three stone-shaped waves across the ground. References: Tschichold's marginal notes, zhuwen and baiwen seals, Ryōan-ji, the Tarot de Marseille, the chain lines of laid paper. Its doubts: the ground sits at the edge of visibility and could read as wood grain, the card corners repeat the day and stone already shown in the margin, and the 82 px margin leaves phone photos about 250 px wide.

The orchestrator recommended the Spine, borrowing the Stream's seven-dot strip and a stone that lights up only for the moment it is tapped. The question it left open was whether the lit stone belonged in the list at all.

The verdict

The Spine is truly a masterclass. I think I'll only pick the realistic pebbles stones render + the 7 circles for the week in the persons of the week, both from the Stream.

That answered the open question. I had started the evening doubting the iOS stone. I ended it keeping the stone lit, in the list, on the line.

Where it stands

The stones on the margin line are now the lit stones: lava, river pebble or gem by valence, the glyph carved in, one light, a soft shadow, the raked rings kept. They went up in size because at the Spine's sizes the carving did not read: 34, 44 and 54 px wide on a phone, 40, 52 and 58 on a wide screen, none taller than 69 px. The rule the final settles on is "the object lives on the line, the print lives in the typography": a stone is lit only where you can press it, and the contents list keeps the Spine's flat ink seals. The persons of the week carry the seven-dot M T W T F S S strip, which replaces the day numerals, since the dots carry the same information.

Two of the Spine's own doubts were worked on. The card corners keep one index (day and weekday, top left) and one time and emotion rail; the upside-down twin and the stone pip go, because the lit stone sits 40 px away. The ground was redrawn as six evenly spaced meandering grooves, each a shadow line with a lit line beside it, over a fine paper grain, so it reads as raked rather than as wood grain. Tapping a stone keeps the ripple and adds a glint whose strength follows the material with a still sheen under reduced motion.

Nothing in the Pebbles apps changed on 11 October. The mocks are HTML, CSS and SVG approximations; their stones are SVG, not the Metal render.