Digamo is built on the shoulders of open source software. The components below — language models, speech synthesis engines, fonts, and Flutter packages — make Digamo possible. We are grateful to the developers and communities behind these projects.
AI & Speech Components
Copyright 2025 Google LLC
Gemma is the AI language model that powers Digamo's on-device conversation engine. We use the 4B-parameter variant quantized to 4 bits. Digamo distributes a modified version — a Model Derivative under the Gemma Terms of Use — with the vision components removed and the configuration rewritten, so only the text model is downloaded to your device.
Your use of Gemma through Digamo is subject to the Gemma Terms of Use and the Gemma Prohibited Use Policy. Those use restrictions also form part of Digamo's Terms of Service.
Google claims no rights in the text Gemma generates. Your conversations stay on your device and are never sent to Google or to us.
Copyright 2023–2024 Apple Inc.
MLX-Swift is Apple's array framework for machine learning on Apple silicon. Digamo uses it to run the language model on the iPhone's GPU.
Copyright 2025 Lassi Maksimainen
kokoro-ios provides the Kokoro text-to-speech voice synthesis engine used for every language in Digamo. We use a modified (forked) version to add multilingual G2P support.
Copyright 2025 Lassi Maksimainen
MisakiSwift provides grapheme-to-phoneme (G2P) conversion in Digamo's text-to-speech pipeline. We use a modified (forked) version to relax dependency version pins.
Copyright 2024 skywalkerswartz
eSpeakNGSwift provides eSpeak NG speech synthesis bindings for non-English grapheme-to-phoneme conversion. We use a modified (forked) version with app bundle path fallback support.
Fonts
Copyright 2020 The Fraunces Project Authors
Fraunces is the serif typeface used for the Digamo wordmark on the paywall screen. Designed by Undercase Type. Distributed through Google Fonts.
Copyright 2024 Vercel, Inc.
Geist and Geist Mono are the sans-serif and monospace typefaces used on the Digamo paywall screen and matching the digamo.ai brand.
Flutter Framework & Packages
Various copyright holders
Digamo is built with Flutter and incorporates the following directly-declared packages. Each package may pull in transitive dependencies under similar permissive licenses.
flutterBSD-3Copyright 2014 The Flutter Authors
cupertino_iconsMITCopyright 2016 Vladimir Kharlampidi
flutter_riverpodMITCopyright 2020 Remi Rousselet
riverpod_annotationMITCopyright 2020 Remi Rousselet
go_routerBSD-3Copyright 2013 The Flutter Authors
just_audioMITCopyright 2019–2024 Ryan Heise
audio_sessionMITCopyright 2020–2024 Ryan Heise
shared_preferencesBSD-3Copyright 2017 The Flutter Authors
url_launcherBSD-3Copyright 2017 The Flutter Authors
in_app_purchaseBSD-3Copyright 2017 The Flutter Authors
License Texts
Apache License, Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work.
4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works in any medium, with or without modifications, in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients a copy of this License; (b) You must cause any modified files to carry prominent notices stating that You changed the files; (c) You must retain all copyright, patent, trademark, and attribution notices.
7. Disclaimer of Warranty. Unless required by applicable law, Licensor provides the Work on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND.
8. Limitation of Liability. In no event shall any Contributor be liable to You for damages.
Full text: http://www.apache.org/licenses/LICENSE-2.0
MIT License
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.
BSD 3-Clause License
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES.
SIL Open Font License, Version 1.1
PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions:
1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself.
2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license.
3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder.
4) The name(s) of the Copyright Holder(s) shall not be used to promote, endorse or advertise any Modified Version.
5) The Font Software, modified or unmodified, must be distributed entirely under this license.
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
Full text: https://openfontlicense.org/
Questions about these attributions or our use of open source software: