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Open-source notices

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The software and models that Lutri is built with, and the licenses they come with.

About these notices

Lutri is built with the work of many other people. This page credits the main parts and says which license each one comes with. Nothing here limits the rights those licenses give you. The Terms of Use and the Privacy Policy say how Lutri itself may be used.

The search model

EmbeddingGemma 2 is an open embedding model from Google DeepMind. Lutri uses the text and vision build that the LiteRT Community converted for phones (litert-community/embeddinggemma-2-text-vision-440m-litert-lm on Hugging Face). The original model and the converted build are both released under the Apache License 2.0.

The model is not part of the app. The app downloads it from Hugging Face (huggingface.co) when you ask it to, and checks it against a fixed checksum. Its authors ask that it be used in line with the Gemma Prohibited Use Policy (ai.google.dev/gemma/prohibited_use_policy).

On-device engines

Google AI Edge, through MediaPipe Tasks and LiteRT-LM, runs the model on your phone, under the Apache License 2.0. On Android, text in pictures is read by Google ML Kit text recognition, which is provided under the ML Kit Terms of Service (developers.google.com/ml-kit/terms). On iPhone, text is read by Apple’s Vision framework, which is part of iOS.

Purchases

Plans are confirmed with the RevenueCat SDK (react-native-purchases), which is released under the MIT license, together with the App Store or Google Play.

App framework and libraries

Lutri is a React Native app built with Expo. These libraries are used under the MIT license. Each is the work of its authors and contributors, and is used under the license published in its own repository:

  • React and React Native
  • Expo and its modules, including expo-background-task, expo-battery, expo-clipboard, expo-crypto, expo-file-system, expo-font, expo-haptics, expo-image-manipulator, expo-image-picker, expo-media-library, expo-secure-store, expo-splash-screen, expo-status-bar, expo-system-ui, expo-task-manager, and expo-video
  • React Navigation, React Native Screens, and React Native Safe Area Context
  • React Native Reanimated, React Native Worklets, React Native Gesture Handler, and React Native SVG
  • React Native MMKV, Nitro Modules, and OP-SQLite
  • Expo Vector Icons, including the Ionicons icon set

The MIT license

Copyright (c) the authors of each library named above.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the Software), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

The Apache License 2.0

The Apache License, Version 2.0 applies to the search model, MediaPipe, and LiteRT-LM. You may obtain a copy of the license at apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, software distributed under the license is distributed on an AS IS basis, without warranties or conditions of any kind, either express or implied.

Website typefaces

This website uses the Newsreader and Schibsted Grotesk typefaces, which are released under the SIL Open Font License, Version 1.1. They are served from this website’s own address, and their license texts are published alongside them.

Trademarks

Google, Android, Google Play, Gemma, and ML Kit are trademarks of Google LLC. Apple, iPhone, and App Store are trademarks of Apple Inc. Hugging Face and RevenueCat are trademarks of their owners. All other names belong to their owners. Lutri is an independent app and is not affiliated with or endorsed by any of them.