I built a self-hosted period tracker because I couldn't find one worth using

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• rimu@piefed.social ⁨2⁩ ⁨days⁩ ago

  I was going to recommend this to someone I know but when I realised your readme.md is entirely AI-generated, I guess the whole project is probably vibe-coded. I can’t in good conscience recommend someone trust their health data to a vide-coded app because they tend to have security problems.

  Also all ai-generated code is public domain so your AGPL license is kinda empty. Might as well use MIT.

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    I do use AI tools while developing this project, but I also have a BSc in Computer Science. AI is a productivity tool.

    Security is something I take seriously, especially since the project deals with health data. All code has test and you’re welcome to inspect the repository yourself or point out any specific security concerns if you notice them.

    Regarding licensing: the AGPL license applies to the project as a whole regardless of the tools used to write parts of the code.

    If you have concrete technical feedback or security issues, I’d genuinely appreciate it.

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    • sonofearth@lemmy.world ⁨2⁩ ⁨days⁩ ago

      You should add a disclaimer stating that you have used an LLM. I have done so for a tool I built with an LLM that I needed, because I don’t know jackshit about coding and I am not gonna pretend I do.

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    • IanTwenty@piefed.social ⁨2⁩ ⁨days⁩ ago

      The danger being raised with the licensing is that you can’t license something if you’re not considered to be the author. There are growing examples of courts and lawmakers determining AI output to be public domain:

      The US Supreme Court recently refused to reconsider Thaler v. Perlmutter, in which the plaintiff sought to overturn a lower court decision that he could not copyright an AI-generated image. This is an area of ongoing concern among the defenders of copyleft because many open source projects incorporate some level of AI assistance. It’s unclear how much AI involvement in coding would dilute the human contribution to the extent that a court would disallow a copyright claim.

      https://www.theregister.com/2026/03/06/ai_kills_software_licensing/

      This is an evolving, global situation and hard to know what to do right now. I think what you’ve got is fine though - you’ve made it clear your intention is to license with AGPL. It’s just that depending on the jurisdiction it might be public domain instead.

      This is another reason to be clear about the use of AI in the README so your users can make an informed decision.

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    • militaryintelligence@lemmy.world ⁨2⁩ ⁨days⁩ ago

      How does AI help with productivity? I’ve gotten so many false answers that I quit trusting it

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    • dogs0n@sh.itjust.works ⁨2⁩ ⁨days⁩ ago

      I’m guessing you let the AI make the tests and everything, which wouldn’t give me much reassurance that any of the code is good. Sadly AI will jump through any hoops it can to get tests to pass if it can’t get the code working.

      I think people who let AI run wild to create a whole app should write the tests themselves or at least only with line completion (jusdging by a quick look at the project files, I am guessing an AI did everything).

      Could be food for thought?

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  • CameronDev@programming.dev ⁨2⁩ ⁨days⁩ ago

    Charitably, it could be an AI readme and hand rolled code, but it definitely is a smell.

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    • rimu@piefed.social ⁨2⁩ ⁨days⁩ ago

      Yeah there are other signs too. Look at those commit messages, all vague, all perfectly capitalized. All with a nice long description with bullet points.

      No one does that in a project they’re building for themselves.

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  • mortalic@lemmy.world ⁨2⁩ ⁨days⁩ ago

    Thanks for doing this, I was debating doing the same. It needs to exist.

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    • rimu@piefed.social ⁨2⁩ ⁨days⁩ ago

      F-Droid has Drip, Bluemoon and Periodical.

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• rimu@piefed.social ⁨2⁩ ⁨days⁩ ago

  I recommend you set the Content-Security-Policy http header so that inline javascript (commonly used for XSS attacks) cannot be executed.

  https://web.dev/articles/strict-csp

  CSP being off is not exactly a security hole but it makes security holes much more likely. By using a strict CSP configuration you close off the possibility of a whole class of holes.

  Also think about setting the Access-Control-Allow-Origin header and enable CORS on your REST endpoints.

  https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Access-Control-Allow-Origin

  Again, kind of a pain in the ass but gets rid of a bunch of potential problems before they start.

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    Thanks for the suggestions, those are good points.

    CSP is something I plan to tighten over time, but enabling a strict policy right now would require refactoring some inline JS patterns used in the templates. It’s definitely on the roadmap as part of security hardening.

    Regarding CORS, the application currently runs as a same-origin server-rendered app rather than a cross-origin API, so CORS headers aren’t enabled by default. If external clients or integrations are added in the future, I’d likely introduce a restricted allowlist for specific API routes.

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    • Pieisawesome@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ ago

      Your releasing a health data app without doing security hardening?

      So much for you saying you take security seriously

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• daannii@lemmy.world ⁨1⁩ ⁨day⁩ ago

  A lot of cycle trackers right now sell that data and there is some concern it could be used to find women who have miscarried and charge them with a crime.

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  • BlushedPotatoPlayers@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

    How can that even be a thing? Miscarriages happen all the time

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    • daannii@lemmy.world ⁨22⁩ ⁨hours⁩ ago

      Yeah they have tried to prosecute women for miscarriages. Basically saying women cause them on purpose.

      nbcnews.com/…/brittany-watts-miscarriage-bathroom…

      The right wing conservatives often have these weird paradoxical beliefs. Like Mexicans are lazy but also stealing everyone’s jobs.

      They believe women are designed to be baby incubators and are natural caregivers, but we are also naturally baby killers and have to be watched and kept from killing all the babies.

      It’s ridiculous.

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    • rmuk@feddit.uk ⁨1⁩ ⁨day⁩ ago

      Well a miscarriage is basically an abortion and an abortion is basically a murder.

      /s, to be clear, but some people will say that sincerely and in some parts of the world they get to write the law.

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• OhVenus_Baby@lemmy.ml ⁨2⁩ ⁨days⁩ ago

  Why not use drip or mensinator? Both FOSS.

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    Ovumcy isn’t trying to replace them. The idea here is to explore a self-hosted, web-based approach that focuses on running the app on infrastructure you control, with simple deployment and cross-device access through the browser.

    Different tools optimize for different things. Native apps like Drip or Mensinator are great for fully local tracking, while Ovumcy explores a self-hosted model that can be accessed from multiple devices without relying on a third-party service.

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    • OhVenus_Baby@lemmy.ml ⁨2⁩ ⁨days⁩ ago

      I see how they differ now. Local vs self hosted. Niche use. But I get your idea especially helpful between partners I suppose. Keep it going! Let’s see where it lands in time. Personally I think the name is hard to remember and pronounce correctly which means it might not be super catchy and really take off. My opinion and in no way should deter you. Perhaps tweak the name. Overall though good job and keep going. This not a negative thing I say. Just to trying to help you refine the idea to success. Best of luck!

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    • GreenKnight23@lemmy.world ⁨2⁩ ⁨days⁩ ago

      this is great, especially when our government starts tracking everything we do online.

      great forward thinking if that was your intention.

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• edgyspazkid@lemmy.wtf ⁨2⁩ ⁨days⁩ ago

  What a chad.

  Image

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  • QuandaleDingle@lemmy.world ⁨2⁩ ⁨days⁩ ago

    MR PIZZA!?!?!??! O_O

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• terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

  I use Android, my wife - iOS. So many things that on F-Droid are simply unavailable to her (yes, I tried to convince her to go to our side). So I searched for living projects with self-hosting idea, did not find one and decided to create one. I have a CS background, though my professional work today is mostly in finance as a senior analyst where I write code to automate and optimize workflows. Ovumcy started as a personal project exploring a self-hosted approach to cycle tracking.

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• julianwgs@discuss.tchncs.de ⁨2⁩ ⁨days⁩ ago

  Do you know about drip? It as local non-profit cross-platform open source smartphone app and my girlfriend is a happy user for years.

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    It is a greap project, mine is not a replacement, but a little bit different approach. It’s a self-hosted web application that you run on infrastructure you control and access from multiple devices. In Drip you can export or import data, but this step is a payment for privacy. Mine offers privacy but from a different perspective.

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    • Magnum@infosec.pub ⁨2⁩ ⁨days⁩ ago

      So what you’re saying is, you added private Cloud storage to it?

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• Fmstrat@lemmy.world ⁨2⁩ ⁨days⁩ ago

  My partner might volunteer to try it out, but since she is very regular it probably wouldn’t help much for input.

  The main feature she says she misses from Flo (we are also data savy, so she left it), was for when things were irregular, the ability for it to predict the why’s and when’s like stress, etc.

  In the current iteration, if something is irregular can you put in what happened and have it auto-adjust?

  Also, reminder notifications a couple of days out were helpful.

  I had been considering a project like this as well, but one that uses on-device analytics to record the why’s and when’s, then allowing for scrubbed anonymous submissions (date adjusting/etc like you do in a clinical trial) to allow for algorithm development while preserving privacy.

  Happy to have a conversation about this for future potential PRs (I am an avid FOSS contributor in both planning and code, even working on a project for the Linux Foundation kernel dev team now).

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  • terraincognita@lemmy.world ⁨1⁩ ⁨day⁩ ago

    Thanks, this is really useful feedback.

    The reminder part is already on the roadmap, and I’ve now added two more issues based on your note about irregular cycles:

    • #17 Add irregularity factor tags for cycle tracking
    • #18 Use recorded cycle factors to improve prediction context

    The direction I’d want for Ovumcy is less “the app predicts the why” and more:

    • users can log things like stress, illness, travel, sleep disruption, etc.
    • the app can use that to give better context and reliability hints for irregular cycles
    • without pretending to make hard medical claims

    The anonymous scrubbed-submission idea is interesting too, but I’d treat that as much later, because it changes the privacy/trust model a lot.

    Happy to keep talking about it, and future PRs would definitely be welcome.

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• pwalker@discuss.tchncs.de ⁨2⁩ ⁨days⁩ ago

  There definitely an actively developped open source privacy focused period tracker available, go check it out: gitlab.com/bloodyhealth/drip But all data stays local on your device , which is of course good from privacy pov but if you are looking for something accessible from different devices then this might not be suitable.

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  • terraincognita@lemmy.world ⁨1⁩ ⁨day⁩ ago

    Thank you! I am aware of it, but mine is slightly diffrent approaches to the privacy, allowing to access from multiple devices.

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• qualia@lemmy.world ⁨2⁩ ⁨days⁩ ago

  I use a period tracker to identify file extensions.

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    As a non-native speaker, I had to use LLM to get that joke)

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• Decronym@lemmy.decronym.xyz ⁨2⁩ ⁨days⁩ ago

  Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

  Fewer Letters	More Letters
  DNS	Domain Name Service/System
  IP	Internet Protocol
  LXC	Linux Containers
  SSH	Secure Shell for remote terminal access

  ---

  [Thread #140 for this comm, first seen 7th Mar 2026, 01:40] [FAQ] [Full list] [Contact] [Source code]

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  • BassTurd@lemmy.world ⁨2⁩ ⁨days⁩ ago

    Fuck bots.

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    • UntimedDiffusion@piefed.zip ⁨2⁩ ⁨days⁩ ago

      I think this particular bot is a good one

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• CameronDev@programming.dev ⁨2⁩ ⁨days⁩ ago

  I did the same thing for my partner. She didn’t migrate in the end, and google killed my play store account.

  bloodyhealth.gitlab.io - is also a good option.

  Some kind of data import would be nice to have according to my partner, but it might be tricky with all the different apps.

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    I like the naming:) and is there any chance to restore access to your account? It looks like it might have a future.

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    • CameronDev@programming.dev ⁨2⁩ ⁨days⁩ ago

      That link isn’t mine, and it is available and active.

      Mine is github.com/cameroncros/PrivatePeriodTracker

      But it’s abandoned. Your welcome to steal anything you like from it.

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• Zanathos@lemmy.world ⁨2⁩ ⁨days⁩ ago

  Awesome! My wife just had her IUD removed and will probably start tracking again. Will get this set up for her and see if she likes it, will provide feedback if she has any.

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  • terraincognita@lemmy.world ⁨1⁩ ⁨day⁩ ago

    Thank you, I opened Discussions for that, fell free to communicate.

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• Cris_Citrus@piefed.zip ⁨2⁩ ⁨days⁩ ago

  This is super cool! I’m not afab so I can’t help test and my question may be ignorant but I’m curious why one would want this functionality to not be something native and benefits from being hosted at all?

  There are some f-droid trackers that look nice (I keep seeing one there with a super pretty ui) but I’m not sure what the tradeoffs of just using a native application for something like this might be

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  • terraincognita@lemmy.world ⁨2⁩ ⁨days⁩ ago

    The benefit over a purely local app is mainly cross-device access and easier syncing/backups, while still avoiding a third-party service storing your data.

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  • Deceptichum@quokk.au ⁨2⁩ ⁨days⁩ ago

    Ownership of your data, privacy concerns, apps being tracked, cross-device, no f-droid for iOS.

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• Echolynx@lemmy.zip ⁨2⁩ ⁨days⁩ ago

  Unrelated, but I love your username; and boosting for visibility.

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