OPEN SOURCE

Open-source and model notices

As of v0.3.0

About these notices

Gravity builds on the components below. The OCR engine ships inside the app, and only the GravityOCR-KO model downloads on first run. The app includes an exact package version list and full license files.

Models

GravityOCR-KO (downloaded on first run) — MIT
GravityOCR (its base) — MIT
GLM-OCR base model — MIT
PP-DocLayoutV3 Core ML export (hugging-mac/pp-doclayout-v3-coreml, bundled) — Apache License 2.0

Key software

nanoVLM-DiffusionOCR — Apache License 2.0
MLX / MLX-VLM — MIT
Python 3.12 — PSF License
Core ML Tools — BSD-3-Clause
NumPy, Pillow, Tokenizers and the other engine packages — their own licenses (ThirdPartyPackages.tsv in the app)
Ink — MIT

Website fonts

Manrope — SIL Open Font License 1.1 (license)
Noto Sans KR — SIL Open Font License 1.1 (license)
This website self-hosts subsets of both fonts.

Full notices

See ThirdPartyNotices.md, ThirdPartyPackages.tsv, and ThirdPartyLicenses/ in the Gravity app inside the distribution DMG for individual copyright notices and full terms.

The app downloads the model at a pinned revision and checks the weight files against their SHA-256.