Masahiro Sakai
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Apps: 12
Total installs: 38K
Latest release: Jun 18, 2026
How this developer operates
- Carrier title 上毛かるた＋α holds 63% of the developer's installs
- Hit rate 0% of launches reach 100k installs (0 of 9 at least 30 days old)
- Release rhythm a new app every ~1.8 years on average
- Maintenance 4 of 12 apps updated in the last 90 days · last update 9 days ago · updates every ~70 days
Listings that changed hands
| App | Direction | Counterparty | When |
|---|
 multibiorhythm |
← likely acquired |
unknown |
Nov 10, 2026 |
All apps
| App | Style | Rating | Installs | Released |
|---|
上毛かるた＋α
|
Entertainment |
— |
10,000+ |
Apr 1, 2012 |
Multi Karuta Reader
|
Entertainment |
— |
5,000+ |
Jan 14, 2013 |
かつしか郷土かるた札読み上げ
|
Tools |
— |
1,000+ |
Sep 24, 2017 |
郷土かるた読み上げ
|
Entertainment |
— |
1,000+ |
Nov 2, 2023 |
花火に行こう Plus
|
Travel & Local |
— |
500+ |
Dec 29, 2025 |
Hanabi Camera
|
Tools |
— |
100+ |
Jun 18, 2026 |
今日の花火
|
Maps & Navigation |
— |
100+ |
Apr 24, 2023 |
Biorhythm Tracker
|
Lifestyle |
— |
100+ |
Mar 13, 2026 |
|
multibiorhythm
|
Health & Fitness |
— |
100+ |
Feb 25, 2023 |
上野三碑かるた よみあげ
|
Entertainment |
— |
100+ |
— |
ひむかかるた
|
Entertainment |
— |
50+ |
— |
まご手帳
|
Lifestyle |
— |
0+ |
— |
