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Anders Borum

@borum.dev
1.2K followers 636 following 329 posts

I make developer tools for iOS and Mac: @workingcopy.app @secureshellfish.app s3files.app

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Anders Borum @borum.dev · 11/08/2026
Still boots. Still charges. Still works. The only thing missing is a purpose.
Sad Pablo Escobar three-panel meme with an iPhone 6s photoshopped over his face.
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Anders Borum @borum.dev · 18/05/2026
Kan der være en negation for meget i siden meta-tags?
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Anders Borum @borum.dev · 27/02/2026
I want my file transfer apps to offer cloud storage convenience with lower privacy and monetary costs, and I've been working on making photo backup as simple as possible.
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Anders Borum @borum.dev · 16/02/2026
I messed up with my tiny screen assuming it would only look back 30 days when it did include more. With a proper cut-off date I end up at $1588.98 for the last 30 days.
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Anders Borum @borum.dev · 15/02/2026
$200 / month
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Anders Borum @borum.dev · 21/01/2026
Weird Spongebob meme saying:

They’re not there for us on Iceland, that I can tell you. I mean, our stock market took the first dip yesterday because of Iceland. 

So Iceland’s already costs a lot of money. But that dip is peanuts compared to what it’s gone up. And we have an unbelievable future.
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Anders Borum @borum.dev · 19/01/2026
Classic meme of Sponge Bon looking really weird saying:

"Considering your Country decided not to give me the Nobel Peace Prize for having stopped 8 Wars PLUS..."

"The World is not secure unless we have Complete and Total Control of Greenland"
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Anders Borum @borum.dev · 09/01/2026
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Anders Borum @borum.dev · 09/12/2025
You will be visited by three spirits
screenshot of "bruce lee" for commodore 64 showing the sumo wrestler, ninja and bruce doing a jump kick.
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Anders Borum @borum.dev · 05/09/2025
White and grey cat sleeping on a bed.
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Anders Borum @borum.dev · 26/08/2025
My older cat is relaxed and happy now that the kitten is out of the picture.
Grey and white cat in front of shrubbery looking around.
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Anders Borum @borum.dev · 20/08/2025
Jeg leder efter et hjem til min halvt år gamle killing Shaggy. Han er sød, kælen og sjov men vores voksne kat nægter at acceptere ham selvom vi gjorde alt for at introducere dem blidt. Han er vaccineret, chippet og neutraliseret. Skriv hvis du har et hyggeligt hjem til ham tæt på Kbh og del gerne.
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Anders Borum @borum.dev · 15/08/2025
Chapter on City Disorder from Civilization Manual.
 Under the government types Despotism, Monarchy, or Communism, it is possible to restore order to a city using martial law. Each military unit in a city makes one unhappy citizen content. Only those units possessing an attack factor of 1 or more can impose martial law. By moving enough units into a city suffering civil disorder, order may be restored.
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Anders Borum @borum.dev · 03/08/2025
You are doing this gods work.
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Anders Borum @borum.dev · 03/08/2025
The revenue chart for the first 11 years of Working Copy backs this up.
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Anders Borum @borum.dev · 09/06/2025
Grey and white cat climbing tree looking into camera.
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Anders Borum @borum.dev · 09/06/2025
Kelly is extremely unimpressed by the kitten.
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Anders Borum @borum.dev · 06/06/2025
I don’t plan to retire builds as such but make the last update on a given beta feed URL point to a non-test build. Not using Sparkle though as I need updates to happen in a very specific way.
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Anders Borum @borum.dev · 02/06/2025
S3 has a concept of pre-signed links granting temporary access to a single file. My S3 client uses this for minimal-infrastructure sharing of files and upload of files where the other part just needs a web browser. apps.apple.com/app/apple-st...
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Anders Borum @borum.dev · 04/05/2025
Can standing on fence.
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Anders Borum @borum.dev · 02/05/2025
Try out HyperContext for automating your Mac from Claude in a controlled way. workingcopy.app/test/HyperCo... There are other similar tools but HyperContext makes it particularly easy to restrict which Mail folders, Contacts groups, Reminders lists, Calendars and Shortcuts are available to Claude.
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Anders Borum @borum.dev · 31/03/2025
By using presigned put links from a page hosted via presigned get links you can make secure requests for anybody with a browser to upload to your S3 bucket. It works with AWS, Backblaze, MinIO instances and I would expect any other S3 service with presigned link support. Coming soon to s3files.app
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Anders Borum @borum.dev · 25/03/2025
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Anders Borum @borum.dev · 14/03/2025
If you could commission one fictional character to fix the current US political problems, who would it be?
Prince George from Blackadder
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Anders Borum @borum.dev · 05/03/2025
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Anders Borum @borum.dev · 23/02/2025
You can get some of the way using a share sheet shortcut like www.icloud.com/shortcuts/45...
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Anders Borum @borum.dev · 19/02/2025
I made a small little menu bar thing showing upload progress in the FTP + S3 apps.
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Anders Borum @borum.dev · 12/02/2025
S3 Files was updated today with support for client-side AES-GCM encryption making strong end-to-end encryption on S3 very easy. apps.apple.com/app/apple-st... Filenames are not encrypted.
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Anders Borum @borum.dev · 08/02/2025
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Anders Borum @borum.dev · 06/02/2025
Kelly is judging you!
Cat lying on on grass looking straight into your soul.
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Anders Borum @borum.dev · 21/01/2025
Cat in front of some plants looking at camera.
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Anders Borum @borum.dev · 19/01/2025
I have started testing server-side-encryption with customer-provided keys (SSE-C) in my S3 client. Help me iron out the kinks by running the TestFlight beta. testflight.apple.com/join/QA73p33u I know a lot of people would prefer client-side-encryption but SSE-C is a nice stepping stone.
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Anders Borum @borum.dev · 17/01/2025
Improvements in Swift concurrency allows early detection of unsafe code making it crash at compile-time instead of at run-time.
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               swift-frontend [2372]
Path:                  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend
Identifier:            swift-frontend
Version:               ???
Code Type:             ARM-64 (Native)
Parent Process:        XCBBuildService [1269]
Responsible:           Xcode [1064]
User ID:               501

Date/Time:             2025-01-17 09:11:18.5409 +0100
OS Version:            macOS 15.2 (24C101)
Report Version:        12
Anonymous UUID:        3BFCBE19-E0AC-0B97-4BE5-21BE0CD8C402


Time Awake Since Boot: 990 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000008
Exception Codes:       0x0000000000000001, 0x0000000000000008
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Anders Borum @borum.dev · 16/01/2025
Drag files to and from S3 storage on iOS and Mac: apps.apple.com/app/apple-st...
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Anders Borum @borum.dev · 14/01/2025
Watching Shrinking and had to research where I had seen Derek before.
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Anders Borum @borum.dev · 08/01/2025
I love the show but I just cannot understand Ben Stiller being behind it.
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Anders Borum @borum.dev · 21/12/2024
My son had a theme week about Germany before Christmas and this drawing was the result. 😵‍💫
Pencil drawing of Crampus in suit and tie surrounded by women.
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Anders Borum @borum.dev · 09/12/2024
Når vi sparker biiip!
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Anders Borum @borum.dev · 08/12/2024
deathgenerator.com#c64
Commodore 64 screen showing:

The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions
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Anders Borum @borum.dev · 02/12/2024
Måske Stray selvom der er er lidt mere uhygge end spillene du nævner.
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Anders Borum @borum.dev · 29/11/2024
www.reddit.com/r/KendrickLa...
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Anders Borum @borum.dev · 28/11/2024
I enter "Devices and Simulator" in cabled mode and clear this checkbox. This seems to be respected.
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Anders Borum @borum.dev · 27/11/2024
Do you ever work with S3 storage? You should try my S3 Files that puts buckets in the Finder, Files app and Shortcuts. It works with AWS, Backblaze, MinIO and many other services. apps.apple.com/app/apple-st...
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Anders Borum @borum.dev · 26/11/2024
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Anders Borum @borum.dev · 22/11/2024
Do you find animated mesh gradients a bit too subtle for your button backgrounds on iOS? Maybe you need a metallic/metal button reflecting the front facing camera. github.com/palmin/Metal... Your pull requests are very welcome as I'm not that great at shader programming.
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Anders Borum @borum.dev · 20/11/2024
Donald Knuth on the rewards of computer programming
Computer programs are fun to write, and well-written computer programs are fun to read. One of life's greatest pleasures can be the composition of a computer program that you know will be a pleasure for other people to read, and for yourself to read.

Computer programs can also do useful work. One of life's greatest sources of satisfaction is the knowledge that something you have created is contributing to the progress or welfare of society.

Some people even get paid for writing computer programs! Programming can therefore be triply rewarding on aesthetic, humanitarian, and economic grounds.
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Anders Borum @borum.dev · 18/11/2024
How people that rebase look at people who merge
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Anders Borum @borum.dev · 18/11/2024
Hi Mike This is Kelly and I am her caretaker Anders.
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Anders Borum @borum.dev · 16/11/2024
Cat on top of barrel.
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