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TECS by Noam Nisan and Shimon Schocken: https://mitpress.mit.edu/9780262140874/


This is nand2tetris.


I built a new Pinboard.in client for iOS and macOS called Pins (Show HN: https://news.ycombinator.com/item?id=25881622)

If it were back in the old days, I would've charged for it upfront for $5 or so. Instead I decided to make it free to try with an in-app purchase to remove all limitations. Targetting a niche customer base that have already paid at least $22/year for a Pinboard.in subscription and are likely to be disappointed by the current offerings meant I was able to go for a more sensible price. Right now the full unlock costs $15 and includes 3 platforms (iOS, iPadOS, and macOS) with family sharing enabled.

I was able to recruit 100+ beta testers and added some much needed features before launch. Since then it has been a steady pace of one update every month or two which adds either new features, UX improvements, or bug fixes.

The app is highly rated (4.8/5 overall rating) and has a good number of loyal customers who follow me on Twitter (@GetPinsApp).


Thank you for making it, I'm a fan.


Cool! How did you recruit the beta users? Shared among friends? Or did you use dedicated service?


Hanging out where my potential users are I guess. I announced the upcoming app release on Twitter, mentioned @Pinboard; it got retweeted and people started reaching out.

Original tweet: https://twitter.com/quanganhdo/status/1346130521034788864


Shameless plug: The other day I launched a new iOS/macOS Pinboard client named Pins (Show HN thread: https://news.ycombinator.com/item?id=25881622)

If you're looking for a modern client for Pinboard, give it a try.


This is a good client and you should try it!


This is great, thanks! I was always searching for something like that as most of the others are deprecated and broken.


It looks great but refuses to sync for me :( Too many (37000) bookmarks?


As someone who spent five minutes writing a pinboard client for my own personal use [1], it was frustrating that there was no way of testing these kinds of cases since even a test account would require extra payment. If pinboard were to pivot to a more api-friendly service, having some kind of test account(s) would be high on my wishlist.

[1] Almost the only feature is to prefill things like title, description, etc. because I wasted so much time, when using pinboard, viewing source and copying these manually.


Thanks for this good idea. I'll think up some way to have test accounts for devs when the new API drops.


37000 should be fine. Try changing the device’s auto-lock setting to 5 mins and leave it undisturbed for that amount of time for the initial download to go through. I’ve got a few users with 100000 bookmarks.

This support article for Pins would give a bit more detail: https://get-pins.app/posts/pinboard-sync-v1/


Thanks for your kind words!

I'm a Pushpin user as well. Love how feature packed the app is.


That sounds weird. I know this is not ideal but you can also use the password option - it isn’t stored on device and only used once to retrieve the API token. All subsequent requests use that token as well.

I added that so less savvy users can still log in easily without having to hunt for the token.


I'm not sure if this is related, but I had a similar problem the other day with ReadPaperback in using my token to allow access to my Pinboard account.

The dev responded really quickly:

> "I’m not sure why but it looks like pasting a token on both Safari and Focus change part of the token to be lowercase and I wasn’t properly handling the different case."

Not sure if this the problem here too?


Actually the share extension is available before unlocking with one limitation: You can use it once every 5 minutes. Something weird may be going on with iOS so sometimes you have to restart the device for new share extensions to show up. This is outside my control.


Cool. I also saw "Save to Pinboard share extension" on the list of unlock features which also led me to believe it was only available that way. Anyhow, it's working well and thanks again.


Glad to know! The apps are free-to-try and you have access to pretty much every feature with some limitations. It's built for modern devices running iOS 14 and Big Sur so system integration is prioritized well: Spotlight support, Shortcuts integration, Widgets, etc.


Tag autocompletion is available in the free-to-try version as well. When you start typing in the Tags fields, 3 most used tags matching that query will show up above the keyboard.

The Mac app is based on Catalyst and 99% feature equivalent to the iOS version. More options to view how tags are used in your account is coming in later versions.


Glad to know it works out for you! Pins should be able to handle even 100,000K+ bookmarks so you're good to go.

Share extension comes with tag suggestion and tag autocompletion, so give it a try.


There's tag completion in the free-to-try version! Just start typing in the Tags field and Pins will offer you the 3 most used tags that matches it above the keyboard.


I did a top level comment update saying I bought Pins no matter what to support and a bit more info. Thanks


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