gthx: Gratitude is a lifestyle app developed by GTHX INC. It is available for iPhone users and is a full version app. The app is designed to help users notice and appreciate all the good things happening in their everyday life, no matter how small. gthx provides fun tools, which can shift the user's outlook and help them reconnect with gratitude and joy for an instant emotional boost and a lasting effect on their mental health.

The app offers several features such as sending thanks via photo, video, text, or voice-based messages. Users can customize their messages with backgrounds, stickers, and fonts. The app also offers on-the-go meditations from therapists and wellness experts, and mental health tips and tricks. Users can set the tone for their day with shareable quotes and affirmations, track their mood with a tap each time they feel thankful, and reflect on memories with the gthx Candle. Additionally, users can connect live with gthx co-founder Omar Brownson and guest wellness experts every #ThankfulThursday.

Overall, gthx is an excellent app for those looking to shift their outlook towards positivity and gratitude. The app is easy to use and offers a range of features that can help users improve their mental health.