perishthethought

My new static, multi-page calendar application

Core Architecture

My calendar app is a static, multi-page application with a fixed release cycle (annual deployment). It features a hard-coded UI with immutable data — the dates and layout cannot be modified without manual intervention. It’s essentially a read-only interface optimized for offline-first functionality.

Key Features

Data Structure - 12-month dataset rendered as a grid-based layout with pre-populated date objects

State Management - Completely stateless; no persistent storage or sync capabilities

User Interaction - Supports reads and writes; compatible with any pen/pencil (similar to a POST request, but non-reversible)

Rendering - Raster-based output; responsive design (fits on my wall)

Accessibility - Physical accessibility for all members of my cohort

Portability - Take a picture once a month, refer to that on your phone

Performance - O(1) lookup time for any date; zero latency, zero network overhead

Technical Advantages

Zero dependencies, requires only wall space and a pen.

No API to support / learn, no loading times / lag, no version conflicts.

Guaranteed uptime. It’s also compliant with most privacy standards, though it does require physical access.

Limitations

The calendar has no real-time sync, no cross-device functionality, and no undo. Annotations are permanent with an ink pen. It cannot adjust for time zones or integrate with other calendar systems. No ICS compatible export of appointment data. And unfortunately, the application will need to be replaced after just one year.

If you’re interested in implementing a similar app, I can point you in the right direction…

Mar 7 at 6:13pmWeb
Show threadperishthethoughtMar 7

I can’t believe I forgot to say:

My calendar app will make the world a better place through decentralized uncompressed data parsing and sharing.

I may have just watched all six seasons of Silicon Valley.

Show threadeinkornMar 7
But can it run Doom?
Show threadlime!Mar 7
yup
Doom Calendar Blank Sheet

Show threadVictorMar 7
Dang, these e-ink displays are getting really good these days
Show threadTachyonTeleMar 7
Have you tried unpinning it, and then pinning it back in?
Show threadblackn1ghtMar 7
Do you plan on adding any + subscription features?
Show threadInternetCitizen2Mar 7
Reasonable yearly fee that helps the developer keep maintenance
Show threadromanticremedyMar 7
Don’t forget about AI. We need AI in every part of our lives /s
Show threadMonkderVierteMar 7
I suck at handwriting, even more so at walls.
Show threadatomicbocksMar 7

Why is the text all blurry?

… no undo…

Have you thought about adding the erasable pen libraries?

Show threadMonkderVierteMar 7
Sure as hell it lags on flipping months.
Show threadExLisperMar 7
Is this self-hosted?
Show threadsibannacMar 7
If you have a magnet you can deploy it on any bare-metal.
Show threadulternoMar 8
It does work better on some, than on others though.
Show threadresipsaloquiturMar 7
Bug report: shows April when it’s March.
Show threadMichalMar 7
I like the size of the display
Show threadaeiouMar 7
Does anyone know what that painting with the little sailboat is called? Or was it made for the calendar? I like it.
Show threadperishthethoughtMar 8

The calendar is generic Japanese style art, they don’t give any credits.

But since you asked, the sailboat painting reminds me a little Henri Rousseau.

https://artvee.com/artist/henri-rousseau/

Henri Rousseau - Artvee

View public domain artworks by Henri Rousseau on Artvee.

Artvee
Show threadSlurpingPusMar 8

Plug the pic into reverse image search, it’s returning a bunch of results for me. Although it’s mostly greeting cards, and cropped compared to the OP image.

E.g. ‘Boat on Lake at Night’.

Boat on Lake at Night - Art Blank Greeting / Birthday Card - Japanese Gold Foil | eBay UK

Boat on Lake at Night.

eBay UK
Show threadNotSteve_Mar 8
Sorry I can’t read your README.md since its lacking any emojis. I’m sure its a nice project but I can’t tell if its blazing fast or not
Show threadperishthethoughtMar 8
Not only is it blazing fast, it’s also opinionated.
Show threadflambonksciousMar 8
Oh wow, what’s the opine API?
Show threadFmstratMar 8

no persistent storage

Doesn’t it have one-time copy-on-write persistent storage?

Performance - O(1) lookup time for any date

Going to need to see the math here. It’s March, explain the O(1) transition to view October 12th.

Show threadperishthethoughtMar 8
Oh damn, I was afraid someone would ask about that. I just thought it sounded good.
Show thread/home/pineappleloverMar 8
If you have tabs for each month, it could be O(1) since it requires only one flip.
Show threadTrilogy3452Mar 8
Constant: 12 months. Beyond this year? Error 404
Show threadEpheraMar 8

Yeah, this should be equivalent to interpolation search, which has an average performance of O(log(log(n))).

It helps that the months are separately indexed, so instead of a search on 365 input elements, you can do two searches with much lower input size, i.e. 12 and 31.

But yeah, you’re still in the larger O(log(log(n))) category with that.

Interpolation search - Wikipedia

Show threadcornishonMar 8
Since the data structure has a static size, that is N is constant (12 months, 365 days) , technically any operation on it is O(1).
Show threadMumboJumboMar 8
Nice humble brag there: “paid”
Show threadLedgeDropMar 8

Is this subscription model: daily, monthly, or yearly?

If I pay more for the “pro-lite” subscription will it include AI integration?

I’m so confused by this products pricing model - it seems so foreign. Without AI, I don’t see how you’ll be able to IPO and buy up all the other calendar companies. /s

Show thread33550336Mar 13
Fuck computers, go analog. Ok, maybe except lemmy.