iOS App Developer
Making gratitude easier to express.
Bringing music to everyone.
I build iOS apps that make everyday life a little richer. Award Certificate Maker and VoicyCare are free to download from the App Store.
Create and share beautiful award certificates easily. Choose a template, enter text, and create professional-quality certificates in minutes.
Music player that amplifies volume up to 500% (5x) for earphones and headphones. Adjust playback volume and music tone for supported audio files.
Award Certificate Maker, VoicyCare, and oshitecho are available as free downloads from the App Store. All three apps display advertisements.
Award Certificate Maker requires iOS 16.4 or later, and VoicyCare requires iOS 15.0 or later on iPhone and iPad. oshitecho is available free on the App Store for iPhone running iOS 26.0 or later, in Japanese only (web: oshitecho.com). Expansion to Android and other platforms may be considered in the future.
Storage varies by app. Award Certificate Maker stores certificate data locally on your device; the developer does not access that certificate data. Usage, diagnostic and notification registration data may be sent to third-party services. VoicyCare temporarily stores audio files on your device for playback. oshitecho stores event and participation data on servers for collaborative scheduling (see oshitecho.com/privacy). See each app's privacy policy for details. Site-wide policy: Privacy Policy.
Use the product-specific contact channels: Award Certificate Maker, VoicyCare, and oshitecho support (Japanese).