# I made a thing (open source inventory app) **URL:** \ **Category:** General Yo-Yo\ **Created:** [June 28, 2026, 7:28pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058 "2026-06-28T19:28:17Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [June 28, 2026, 7:28pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/1 "2026-06-28T19:28:17Z")
I got tired of tracking my yoyo collection in a spreadsheet, so I built an app for it (free, open source) Once I got past a hundred yoyos the spreadsheet fell apart — there were too many columns, photos were clunky as hell, the “for sale” tab was in some spy code that I don’t remember writing. So I made a web app instead. You can browse as tiles or a list, search and filter, add photos and zoom in, track specs, keep a separate For Sale page, share a single yoyo as its own page or save an image of it to send to someone, import/export CSV, and download full backups. There’s a demo if you want to click around (no signup): [test.daveronica.com](https://test.daveronica.com). Password **demo** gets you the editing view, and it’s read-only so you can’t break anything. It’s free and open source if you’d rather host your own: > **[GitHub - stammig/yoyo-collection: Self-hosted web app to catalog and showcase your...](https://github.com/stammig/yoyo-collection)** > > Self-hosted web app to catalog and showcase your yoyo collection — specs, photos, arrivals, a public For Sale page, CSV import/export, and full backup. Node + SQLite, no build step. Happy to hear what’s confusing or missing. If there is a desire to see it fully used I can share mine. Just don’t want to break any rules. ---
**Author:** ![marik\_mp](https://avatars.discourse-cdn.com/v4/letter/m/9f8e36/32.png) [@marik\_mp](https://forums.yoyoexpert.com/u/marik_mp)\ **Post date:** [June 28, 2026, 7:29pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/2 "2026-06-28T19:29:46Z")
Dude, that’s so cool! Great job! My collection is not yet that huge to need one, but I will definitely prefer to use it in the future! ---
**Author:** ![Ed-C](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/ed-c/32/132116_2.png) [@Ed-C](https://forums.yoyoexpert.com/u/Ed-C)\ **Post date:** [June 28, 2026, 8:09pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/3 "2026-06-28T20:09:11Z")
Very nice! I’m using a spreadsheet atm, but that looks like a more elegant solution. The addition of purchase and sold dates would be nice. ---
**Author:** ![Captrogers](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/captrogers/32/647012_2.png) [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)\ **Post date:** [June 28, 2026, 10:14pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/4 "2026-06-28T22:14:54Z")
Nice. I’ve seen a few if these kind of apps over time. I think I almost need like a mobile app to use one myself or a really optimized for mobile web app. The one thing most apps haven’t had is a way to take a picture and upload it easily for the yoyo which helps when I easily forget which green yoyo is named what lol ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [June 28, 2026, 10:32pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/5 "2026-06-28T22:32:30Z")
This one integrates with your phone and offers pulling from your photo library, taking a picture, or pulling a file from your file system. There are a few rough edges (it is not the full iPhone experience when using the “take a picture” option). It also works as a web app on your phone, which could also be made into an icon on your screen. My roadmap is to polish the rough edges, add community feedback, and create Android, iOS/iPadOS, and macOS apps. The first rough edge is that the responsive CSS is wonky on mobile. That is the kind of feedback I need from the community to tailor it. Thanks @Captrogers ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [June 29, 2026, 12:08am UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/6 "2026-06-29T00:08:49Z")
I am in the process of adding these fields as built-in. But there is a current option to add your own fields in the Settings menu. ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/2/f/d/2fddb2e2581d2ba3baa7cafd872f4f652af3e4ef.png) ---
**Author:** ![LouVanLanning](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/louvanlanning/32/604181_2.png) [@LouVanLanning](https://forums.yoyoexpert.com/u/LouVanLanning)\ **Post date:** [June 29, 2026, 4:44pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/7 "2026-06-29T16:44:57Z")
I’m almost 800 rows deep in my spreadsheet, and NOW you show me this!? ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [June 29, 2026, 5:20pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/8 "2026-06-29T17:20:09Z")
Haha. Yeah that is a monster spreadsheet. If it makes you feel better you can always export your spreadsheet to CSV and import it. I tried to think of everything but I am positive I missed a ton of workflows that I don’t personally use. My day job is being the guy that designs tutorials for software. I have done none of that for this….yet. ---
**Author:** ![LouVanLanning](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/louvanlanning/32/604181_2.png) [@LouVanLanning](https://forums.yoyoexpert.com/u/LouVanLanning)\ **Post date:** [June 29, 2026, 5:40pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/9 "2026-06-29T17:40:58Z")
I will definitely check this out. I have also been uploading my stuff to [yoyocollector.com](http://yoyocollector.com), but it is not set up for mobile at all. There have been a few attempts at ways to catalog yoyo collections, but none of them have really had ongoing support to fix bugs and such. I don’t wan’t to upload 800 yo-yos and then have the site disappear 😅 ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [June 29, 2026, 7:22pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/10 "2026-06-29T19:22:21Z")
Yeah, I see that. So when I built this, I tried to make it so that you weren’t relying on anybody but yourself and your hosting company. I can’t promise I’ll be around to fix any bugs in the future, but I did set it up so that other people can take it on if they want to. I’m still trying to figure out how I can do the same in Android and iOS so that there’s truly a mobile app experience that syncs between platforms and keeps your data available and reliable. ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [June 29, 2026, 7:24pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/11 "2026-06-29T19:24:55Z")
Well, that shows just how much due diligence I did. I didn’t even know that site existed. If I stepped on some toes, my bad. ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [July 31, 2026, 11:46pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/12 "2026-07-31T23:46:33Z")
Bump…I have added a ton of new features. ---
**Author:** ![marik\_mp](https://avatars.discourse-cdn.com/v4/letter/m/9f8e36/32.png) [@marik\_mp](https://forums.yoyoexpert.com/u/marik_mp)\ **Post date:** [August 1, 2026, 7:56am UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/13 "2026-08-01T07:56:16Z")
Just FYI I deployed it locally and I do use this app and it’s great, it has some small weird UI bugs, but overall it’s great and doing its job. It was really nice to figure out the total retail price of the collection vs what I paid for it. Great job! ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [August 1, 2026, 1:08pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/14 "2026-08-01T13:08:27Z")
That’s awesome. I have been aggressively tackling bugs and such. There is a newer version that should be much better. ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [August 4, 2026, 12:03am UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/15 "2026-08-04T00:03:45Z")
It’s terrible timing on my part, but I’ve also been working on an iOS app that has feature parity with my Web app and a few extra bells and whistles. I’m also going to port it to android. Probably should’ve put it out a while back, but I kept tweaking it. ADD strikes again. ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [August 5, 2026, 4:27pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/16 "2026-08-05T16:27:15Z")
I have my iOS app working. If you want to try it DM me your email and I’ll send a link. ---
**Author:** ![rAgingr3dhead](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/ragingr3dhead/32/657439_2.png) [@rAgingr3dhead](https://forums.yoyoexpert.com/u/rAgingr3dhead)\ **Post date:** [August 15, 2026, 2:16pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/18 "2026-08-15T14:16:15Z")
this is a great project, thanks for making it open source! I think your mobile design first based off the css you have is enough to say that a native mobile app isn’t needed in my opinion, but if that’s an itch you need to scratch, then have at it. i’ve pulled this repo locally and plan to host it on my local [Open Media Vault](https://www.openmediavault.org/) behind my LAN only, no need to put it out into the world. i also can’t imagine that i’d need to refer to it remotely unless I’m standing in a retail store looking at some throws (counts on hand how often that could occur). I may put up some PRs for you to consider, but from what I’ve seen so far, this is a solid start, great job! ---
**Author:** ![rAgingr3dhead](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/ragingr3dhead/32/657439_2.png) [@rAgingr3dhead](https://forums.yoyoexpert.com/u/rAgingr3dhead)\ **Post date:** [August 15, 2026, 3:35pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/19 "2026-08-15T15:35:49Z")
i would love to test it on android…even if that means sideloading it. the best “feature” i could see of value on a native app is being able to leverage the device camera to take a photo and have siri or gemini analyze the throw and auto-fill much of the basic yoyo details (manu, dims, msrp, etc) ---
**Author:** ![stammig](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/stammig/32/678917_2.png) [@stammig](https://forums.yoyoexpert.com/u/stammig)\ **Post date:** [August 15, 2026, 4:36pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/20 "2026-08-15T16:36:31Z")
Glad you are having a chance to try it. The main reason for the iOS app is to have the camera involved. Right now I am using the basic Apple AI to parse links and such to autofill the info. I didn’t have much luck with photos. So you can feed it the One Drop Item page and it will fill in as much as it can. Or you can give it a YYE store page and it will even put the MSRP. I am sitting around ~300 yoyos and it would have been a logistical PITA to do the photos without the iOS App. ---
**Author:** ![rAgingr3dhead](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/ragingr3dhead/32/657439_2.png) [@rAgingr3dhead](https://forums.yoyoexpert.com/u/rAgingr3dhead)\ **Post date:** [August 15, 2026, 10:44pm UTC](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058/21 "2026-08-15T22:44:33Z")
running perfectly on OMV ![CleanShot 2026-08-15 at 18.41.05](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/d/5/d/d5d03bf58b022b0996c4f151bbf369b3210ea450.png) [Next page](https://forums.yoyoexpert.com/t/i-made-a-thing-open-source-inventory-app/448058.md?page=2)