Alternatives
Products that do what Six years of running a period tracker app with no subscription, no ads does
I've been running Simpluna, a period-tracking app, for six years. It's a company based in Tokyo, Japan, but development and operations are basically a one-person effort. The app is built with React Native (Expo). The defining trait of the app is that it's simple, with no unnecessary features. Recording periods, calculating predictions, and sending notifications — that's the core of it. This space is dominated by big players (Flo, Clue, and in Japan, Luna Luna). Building something similar would have been hopeless, so I made the things those apps don't have my selling point. Optional features…
- 1IM
Hey HN, after the app I actually used to track my period wanted me to log in and save my data in the cloud, I decided to write my own. Most apps in this area are based on a subscription model and display far too much information anyway. For me, a simple calendar is enough where I can add a few notes if necessary. So that is the result of my work - a simple design and the data is only saved on the smartphone.
2024 · play.google.com
- 2
- 3
- 4
- 5
- 6
- 7MA
Hello, For quite some time, I've been unsatisfied with the built-in timers on both Android and iOS; especially for workouts, when I needed to set up a configurable number of series with rest periods in between. That's when I started thinking about building something myself. It was just a timer and I said to myself "how hard could it be?", I had no idea. The first iteration of the project worked "just fine", but the UI was an eyesore (even more than it is now), and the UX was quite awful as well. As you can probably guess, I'm not versed in design or front-end development. In fact, my last…
Nov 2025 · mytimers.app
- 8
- 9
- 10TO
Hey HN! I made TimeAnt because my dad needed a simple way to track his time at work and he didn’t like the other apps out there because they were too complicated or had way too many features. So, I built an app that just does the basics: track work hours, meetings, breaks, lunch and optionally lets you add notes - and that's it. It’s totally free, works both online and offline, and doesn’t require an account (but you can create one if you want). The goal was to keep it super simple and let you focus on tracking time without all the fluff. It also gave me a chance to learn Swift and build my…
2025 · apps.apple.com
- 11
Private pregnancy tracker. No cloud, no accounts.
Jun 2026 · getzorya.app
- 12
- 13IB
There’s something quietly unsettling about how normal it's become to hand over our most personal data to apps that barely deserve our trust. My wife once showed me a notification she got from her period tracking app. At first, it seemed like a simple reminder. But then came the ads. Not long after, she started getting eerily specific suggestions on other platforms. Things she hadn’t searched for. Things that felt too close. Somewhere, her cycle had been turned into a data point. That bothered me more than I can explain. These apps promise helpful insights. But in return, they take so much.…
2025
- 14IM
I started running 5 years ago and it completely changed me. Recently, I decided to train for my first marathon and needed something more than just tracking my runs to motivate me. I noticed all the apps currently available are just trackers and route finders, but nothing has solved the problem of consistency. So I thought of combining the basic idea of the Forest app with running and created a small app for myself which would reward me with plants and trees for my runs. I am not a mobile developer but then i came across Capacitor. Since I knew Next.js and have been working with it for the…
2025 · runandgrow.com
- 15IB
I kept trying to explain how important outdoor light is and how most people aren’t getting enough. Eventually I figured that showing is more effective than telling. So we built a free app that uses your Apple Watch or iPhone to automatically track your light exposure throughout the day. It tells you if you’re getting enough, shows you how consistent you are, and rewards habits that support hormone balance. It's in beta on TestFlight, let me know what you think!
2025 · lumehealth.io
- 16
- 17IB
At my day job, we have a daily async stand-up. We have to message a slack bot how many hours we have worked on a given task that day and overall. The format is: > Task: "Task Name" | Worked: 5h Total: 16h > Description: Finished implementation of feature. I don't complain. Most fully remote jobs come with a version of this, but doing it manually got tedious. So, I needed a simple app that would track this. I am not usually a fan of "vibe coded" apps, but this was an ideal candidate for it, since it's not production code. Most LLMs solve the problem by creating a single HTML file with forms…
2025 · htmlsync.io
- 18IS
i built a heart rate zone training app for runners. ios + apple watch. custom zones, real-time haptics, post-run graphs. all the “smart” stuff you’d expect. but i never talked to a single runner before building it. not even myself lol. started as a thesis → kept building → added features → added a paywall (€4/month!) → launched it → and yeah… no one cared. zero feedback. zero users. just code in the void. i recently made the whole thing free. not trying to “sell” anything now — just seeing if it’s actually useful, and listening this time. curious how others handle this. ever build…
2025 · basamasa.github.io
- 19
The private period tracker that grows with every cycle
13d ago · simply-track.com
- 20TA
Hey! I just launched TimeSlate.app — a completely free web app to help students stay focused and organized with zero friction. No accounts, no ads, no subscription What it does: - Pomodoro Timer - Task Manager – Tag tasks by subject, assign priorities, track progress. - Subjects - Revision Timetable – Block out your day visually with subject-based time blocks. - Dashboard – See time spent, tasks completed, Pomodoros per subject/day. It’s built for students, self-learners, or really anyone trying to structure deep work time without distractions. Why I made this: Every productivity app I…
2025 · timeslate.app
- 21
Private period tracker with apple intelligence
Jun 2026 · apps.apple.com
- 22
- 23
Hi, I developed Life Tile for iPhone. It tracks your time passively and visualizes it as a Mondrian-style grid. It's a one-time purchase app with a 7-day trial. I was a user of a similar app named Life Cycle. Since the app hasn't been updated in a while, I tried to make a better app with my ideas and experiences. I used a big square timeline instead of a donut chart. And I added more useful views: tree-map, map, and list. You can use categorized activities with custom colors. The data never leaves a device. No account, No Server. It only supports data backup using iCloud. It was for privacy…
Jul 2026 · apps.apple.com
- 24TT
2021 · fatih-erikli.github.io
Ranked by how close each launch is in meaning, then by votes. Refine with a description →