Eight apps, built and maintained by one person.
RaynearSoft is an LLC with one person in it, and the person is me, Byeongguk. All eight apps are Flutter with Firebase behind them, and all eight are on the App Store and Google Play. The first shipped in 2024.
- Apps published
- 08
- Stores
- 02
- Written in
- Flutter
- Rated HanjaHaru, 78 ratings
- 4.55
Alphabetical
The apps
Two are exam prep: hanja in Korea, kanji in Japan. Both exams start at the characters a first-grader learns and run up into the thousands. The rest are a camera dictionary, a focus timer, a mood log, a habit tracker, a Markdown diary, and 3D dice.
Ordered alphabetically, 01–08 — not by release date.
Dice Rune Games Type 3d6+2 or 2d20kh1, throw the dice into a 3D arena, and watch them settle. Built for tabletop games, runs offline, and asks for no account. iOS · Android Entry → 02 
Flowmodoro Productivity A count-up focus timer built on the Flowtime Technique. Work as long as the work is going, and the break you get is a fraction of the time you logged. iOS · Android Entry → 03 
HanjaHaru Education Korean hanja level exams, one grade at a time. The Korea Chamber of Commerce set landed in the September update: 4,908 characters, grades 9 to 1, with 9 through 7 free. iOS · Android Entry → 04 
Kanken Mainichi Education Kanji Kentei practice for every grade, 10 down to 1: quiz formats by the dozen, stroke-order tracing, flashcards, and a profile for each person on the device. iOS · Android Entry → 
MD-Journal Lifestyle A diary with a Markdown editor. Entries are encrypted on the device, the iCloud backup keeps them that way, and biometrics or a PIN open the app. iOS · Android Entry → 06 
Moodient Productivity A 30-second check-in that puts your mood on a pleasure-arousal map, with 190 words to pick from. Records stay on the device; only the optional AI coaching leaves it. iOS · Android Entry → 07 
SnapDic Education Hold the camera over printed text, tap a word, read the definition. Whatever you save comes back for review on an FSRS schedule until it sticks. iOS · Android Entry → 08 
SynapSet Lifestyle A habit tracker that starts with identity. Describe who you want to become, then attach each new habit to a routine you already keep. iOS · Android Entry → Who makes these
RaynearSoft is one person with an LLC behind him. Eight apps since 2024, Flutter throughout, Firebase underneath, all of them on both stores. Two are exam apps, which means most of my hours go into data entry and proofreading rather than code.
The last Kanken Mainichi update shipped with no new features. I read the definitions for all twelve exam levels one at a time and rewrote 1,319 that machine translation had turned into the wrong word: 不景気, an economic slump, had come out as depression the illness. Another 130 words that had no business in a study app came out with them. HanjaHaru has 78 ratings and a 4.55 average, which is small enough that I read every one, so send me the mistakes you find.