Apps that make good habits stick.
Hyunsang Labs is a one-person iOS studio in Seoul. Listening practice, vocabulary, the questions you got wrong, the morning run: none of it works as a one-off. Each app takes the friction out of doing it again tomorrow.
1. Which of these apps did Hyunsang Labs make? Choose all that apply.
Language · Listening & Shadowing
Dollim
Shadow real speech, check it with dictation, keep it with review.
Mark A and B around the part you missed and only that stretch plays, again and again. Slow it to 0.5× and the voice keeps its pitch.
…so I figured I’d just ask him myself.
I was gonna say, it’s not that big of a deal.
Study · Spaced repetition
Memento
Less copying. More remembering.
Tap once you have recalled it. The starlight gathers into the meaning, and Memento has already picked how easy it was. It also sets the day each card comes back: the ones you know drift further out, the shaky ones return soon.
madrugar
Recalled it? Tap to see the meaning
Lifestyle · Running
RunWeather
Running weather from a character you’ll actually check.
Temperature, rain, humidity and wind, plus air quality inside Korea, for the next 24 hours. One look at the runner tells you whether to head out now.
Great day for a run.
24-hour forecast
Comfortable hour for an easy run.
Study · Wrong-answer notes
Qpeat
Wipe the pencil marks off the page. Solve it fresh.
The circle you drew and the note in the margin come off. The question is set again as text, so it reads like the first time you saw it.
Choose the word that best completes the sentence.
112. The quarterly report must be submitted ------- Friday at noon.
- (A) until
- (B) by
- (C) within
- (D) since
The same question in Qpeat
The quarterly report must be submitted Friday at noon.
Pick an answer
One person, four apps
Hyunsang Labs is run by a single developer in Seoul, with no outside investors. None of the apps show personalized ads. Bug reports, feature requests and questions all land in the same inbox.
The studio also makes App Store Screenshot Studio, a free in-browser tool for localized App Store screenshots. No account, and nothing leaves your browser.