One Month After Release and the Road Ahead

This post was machine-translated from the Japanese original published on note. Read the original on note →

monthlet’s beta was released on August 1, 2026. Today marks exactly one month since then, so this post looks back at the first month and lays out the roadmap ahead.

What got done in one month

First, the results of the past month in numbers.

monthlet is developed entirely by me, alongside another full-time job, using Claude Code. Given the limited time available, I think this is a reasonable amount of progress.

Adoption is still low

On the other hand, actual download and user numbers (which I won’t publish) are well below the initial projection, so acquiring users is a very large challenge from here.

I’ve tried several marketing channels, including overseas listing sites, but the channel that works best so far is this journal. A steady group of readers has built up, so I plan to keep publishing here frequently.

The roadmap

Parts of this have been mentioned in pieces before, but here is the product roadmap stated in full.

A single timeline in order: version 1.0.0 for Mac on October 1 2026; then 1.1 for Windows through the Microsoft Store in Oct-Dec 2026; then 1.2 monthlet AI with no API key needed in Jan-Mar 2027; then last, an iPhone version limited to viewing, also in Jan-Mar 2027. All of this is planned and the dates may shift.

First, on October 1, the Mac version currently released as a beta will ship as the official version 1.0.0, after bug fixes and smaller improvements.

Next, a Windows version with comparable features to the Mac version will be released before the end of the year. Initially, the Windows version will be distributed through the Microsoft Store.

Early in 2027, the first subscription service, “monthlet AI,” is planned. Today the app is BYOK only, so using the AI note generation that sits at the core of monthlet requires an API key from a separate AI provider. Once monthlet AI is released, signing up for monthlet AI alone will be enough to use the AI features. The details are still being finalized, but monthlet AI is planned to include a trial that allows a certain amount of use at no cost.

After that, work will move to mobile support, which is close to a requirement for any modern note app, starting with an iPhone version limited to viewing.

monthlet is serious

monthlet is a very new app, and compared with the many note apps already out there, plenty of basic pieces are still missing.

What the roadmap above describes is the minimum needed to reach product-market fit; there is much more I want to build beyond it. For example, I eventually want a community plugin mechanism, of the kind some established note apps offer, so users can build and share their own extensions.

There is a mountain of work to do with limited resources, but I am not pessimistic at all.

Now that many people use AI as part of daily life, there is a need for tools that work with AI to make personal information management and knowledge work more efficient. monthlet will keep being developed, steadily, so that it can be one of the strong options among such tools.

Feedback wanted

monthlet is currently distributed for macOS (Apple Silicon). I would genuinely like to hear from people who actually use it and share feedback.

If something was hard to understand in practice, or if there is a feature you want or an area you would like improved, please get in touch through the channels below or at the email address listed on the official site.