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  3. /How I Built Sukima: A calm productivity app for overwhelmed people
How I Built Sukima: A calm productivity app for overwhelmed people
#buildinpublic#indiehackers#solofounder#ios#productivity#ai

How I Built Sukima: A calm productivity app for overwhelmed people

JR

Joel Rightler

May 12, 2026

4 min read
I keep my phone on the nightstand at 9pm because I can't stop adding things to it.

The faucet I said I'd fix. The thing my wife asked me to call about. The email I owe to a guy who's been waiting two weeks. Sometimes I open a productivity app, get asked for my name, my goals, my biggest challenge, and put the phone back down without doing anything.

The to-do list is still in my head.

I built Sukima because I kept doing that.

The name

Sukima is the Japanese word for the small gap between things. The pause, the opening, the in-between moment. The idea behind the app is that you have more usable time than you think, scattered through your day in small windows. Five minutes between meetings. Ten before bed. Twenty in line somewhere.

Sukima tries to find those gaps and fill them with the right next step.

The product

You dump everything in your head. Voice or text, whatever's faster. The AI sorts it into categories with priorities, gives each task 3 to 5 steps small enough to actually start, and stays out of your way.

When you have ten minutes, you ask Sukima what to do. It picks one thing. Tells you why.

That's the whole product. No system to learn. No method to commit to. No habit to build. You dump and the AI shows up.

The numbers

I launched April 27, 2026. Today is day 15.

29 installs. 3 paying subscribers. About 150 dollars in lifetime revenue.

Small. I know. The goal is 10K profit MRR within 12 to 18 months, which means roughly 2,200 paying users. I'm currently at 0.14 percent of that. Most apps don't make it past month one, and the only way to find out if this is one of them is to keep going.

The expensive lesson

When I launched I had a 14 screen onboarding. Six survey questions. Four feature pitch screens. A prediction screen that computed "you'll save 4 hours per week, clear 18 tasks, reduce mental load 55 percent" from your survey answers. Then a trial dump. Then a hard paywall.

Activation rate: 7.7 percent. Industry standard is 40 to 60 percent. The math is brutal: 14 screens at 90 percent retention per screen compounds to 23 percent reaching the paywall. At 85 percent it's 10 percent. I was on the curve.

Last week I cut it to 5 screens. The survey moved to settings. The feature pitches collapsed to three bullets. The prediction screen got killed entirely. I added a "Sorted" screen that shows the AI's actual output after the trial dump, before any ask. The paywall became soft.

Every screen between download and value is a tax. I'm paying it down.

Why I'm doing this in public

I'm one guy at a kitchen table. Wife, kid, regular life, and an idea I can't put down. I don't have a team, a runway, or an exit plan. I have evenings and weekends and a tendency to overbuild.

Building in public is uncomfortable but it's also the only thing that keeps me honest. If I'm going to post the numbers, I have to make the numbers real. If I'm going to say I cut the onboarding to 5 screens, I have to actually ship 5 screens.

I'm reporting numbers every Friday. Activation, downloads, paid subs, what I shipped, what I learned. We'll see what compounds.

What's next

The new onboarding has been live since Monday. Friday I'll know if the redesign moved activation from 7.7 percent to something resembling the industry average. If it did, we keep going. If it didn't, back to the drawing board.

I'm shipping content every weekday on X, LinkedIn, TikTok, and Instagram. Some posts get 13 impressions. Some get 88. Some get 77 views. None have gone viral. That's not the bet. The bet is that consistency over weeks compounds when individual posts don't.

Sukima is free on iOS. A little space, on purpose.

About the author

JR
Joel Rightler
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