1. About These Terms
These Terms of Use ("Terms") govern your use of AndroSigner: APK & AAB Signer ("AndroSigner", the "App"), Android package com.krepelstudio.androsigner, provided by Krepel Studio ("we", "us", or "our").
By downloading, installing, or using the App, you agree to these Terms. If you do not agree, please do not use the App. Your use is also subject to applicable law and Google Play's applicable terms. The effective date of these Terms is the date displayed when they are published on the App's official Terms page.
2. Permitted Use and License
The App is a utility for lawful personal and professional use. Subject to these Terms and applicable platform licenses, you may use it to sign APK and Android App Bundle (AAB) files for which you have the necessary rights and authorization.
You agree not to use the App to infringe intellectual-property, security, privacy, or other rights; distribute unlawful or malicious content; impersonate another developer; fraudulently represent another person's app as your own; or circumvent applicable access, licensing, or security restrictions.
You must comply with laws and the terms of any platforms where you use or distribute signed files. Nothing in this section limits activities permitted by applicable law or open-source licenses.
3. Features and Technical Requirements
AndroSigner allows you to choose an existing APK or AAB file from your device, select or create a compatible signing keystore, enter key credentials, sign the file, verify the resulting cryptographic signature, and save or share the output.
The App does not create an AAB from an APK, modify application code or resources, provide a tool to extract installed applications, or guarantee that a signed file will be installable or accepted by an app store.
Its features depend on compatible file formats, valid keys and credentials, device storage, your Android version, and applicable system file access. Some processing may be interrupted when the App or device is closed, storage access is revoked, or resources are insufficient. Where a feature cannot be completed, an error may be shown.
4. Files and Intellectual-Property Rights
You retain any rights you hold in the files you select and the output files you create. You are responsible for ensuring that you are authorized to access, modify the signing status of, sign, export, share, and distribute the relevant APK or AAB.
Signing a file does not grant you ownership, licensing rights, publishing rights, or permission to use third-party code, trademarks, content, or certificates.
The App is designed to keep original selected files unchanged and to produce a separate signed output. You should nevertheless keep independent backups of important files before performing any operation.
5. Signing Keys, Keystores, and Passwords
You are responsible for the security, storage, and backup of your own keystores, private keys, aliases, and passwords. Keep them confidential and do not share them with unauthorized parties.
A new keystore must be saved by you to a location you control. If you lose your keystore or its credentials, it may be impossible to reproduce the same signature, sign future updates, or access apps that require the original signing identity. The App does not promise to recover lost private keys or passwords.
For an update to an existing published application, you may need to use the original authorized signing key or, where Google Play App Signing applies, the correct registered upload key. Generating a new keystore does not automatically authorize an update or replace a previously registered upload key.
6. Free Access
The App is available as a free download. Without a Pro purchase, you may successfully complete one APK signing and one AAB signing. These are two separate allowances.
An allowance is used only after successful signing, successful signature verification, and successful initial saving or system sharing of the verified output, as supported by the App's completion flow. An unsuccessful, failed, or canceled attempt does not intentionally use an allowance. Re-exporting an already completed output within the same active result session is not treated as a new signing operation.
Once the allowance for a particular format is used, a further signing operation in that format requires Lifetime Pro. An unused allowance for the other format remains available.
The App may keep free-use counters locally. Removing or clearing local App data may change local counters, but this does not create a right to bypass paid access or interfere with entitlement controls.
7. Lifetime Pro and One-Time Purchases
AndroSigner offers an optional Lifetime Pro upgrade through Google Play Billing as a one-time, non-consumable in-app purchase, not an automatically renewing subscription.
A valid Lifetime Pro purchase unlocks unlimited APK and AAB signing in this App, subject to the availability and supported functionality of AndroSigner. It does not grant access to other apps, different platforms, separate products, or services not included in the offer.
The App has no advertising in either its free or Lifetime Pro version. Lifetime Pro does not unlock a different signing algorithm or a higher level of signature security; its benefit is removal of the separate free signing limits.
The purchase price, currency, and applicable tax information shown by Google Play at checkout control the transaction. We do not charge a recurring subscription fee for this upgrade. Purchase recognition and restoration depend on valid entitlement information provided through Google Play.
If an eligible purchase is not recognized, use the App's available restore-purchases feature or contact us. A purchase does not override technical limits, signing requirements, or the rights of third-party app owners. Your mandatory consumer rights continue to apply.
8. Payments, Refunds, and Consumer Rights
Google Play processes in-app payments under its applicable terms. Krepel Studio does not receive your full payment-card details through the App.
Refunds may be requested through Google Play or, where appropriate, through Krepel Studio. Eligibility is determined by the transaction, applicable Google Play procedures, and the laws governing your purchase.
Nothing in these Terms excludes or reduces non-waivable consumer rights, including applicable rights to conformity, support, repair, price reduction, a refund, or other lawful remedies for defective or nonconforming digital content.
For purchase-related assistance, contact Krepelstudio@gmail.com with the App name and a description of the issue. Please do not email private signing keys, passwords, or complete payment-card details.
9. Local Processing and File Access
AndroSigner is designed to perform file signing and signature verification locally on your device. It uses Android's system file picker and document access mechanisms to operate on files and storage locations you explicitly select. It does not require broad permission to manage your entire device storage for the core signing function.
Temporary working files may be created in App-private storage during processing. You choose when and where to save an output or encrypted keystore. When you explicitly share an output using Android's sharing interface, the receiving app or service may access that file and handle it under its own terms and privacy policy.
You are responsible for managing exported files and for using trusted destinations. Removing the App does not necessarily delete files you have saved in separate device folders or third-party storage.
10. Privacy and Data Handling
Please review the App's Privacy Policy at:
https://sites.google.com/view/androsi-g/
It explains the intended handling of selected files, keystores, passwords, local preferences, temporary outputs, Google Play Billing information, and any information you voluntarily provide when contacting support.
These Terms do not replace the Privacy Policy or any legally required notices or user choices.
11. Third-Party Services and External Links
Google Play Billing is used for optional purchases. Google Play's services and payment processing are subject to Google's applicable terms and privacy policies.
A file provider, cloud-storage application, browser, or receiving app that you choose may operate under separate terms and process data independently. The App does not provide its own cloud-signing service or synchronize your private signing keys to Krepel Studio servers as part of the approved functionality.
Links to third-party websites do not imply endorsement of all external content. To the extent permitted by law, we are not responsible for independent third-party services, but we remain responsible for AndroSigner where required by applicable consumer law.
12. Intellectual Property in the App
The AndroSigner application, its branding, original interface, designs, and other protected elements belong to Krepel Studio or their respective rights holders and are protected by applicable law.
Your download or purchase grants the right to use the App under these Terms and the applicable platform license; it does not transfer ownership of protected App materials. Third-party and open-source components remain subject to their respective licenses.
13. Signature Verification and Output Limitations
A message stating that an APK or AAB signature was verified concerns the cryptographic signature check performed by the App. It does not mean that the file is safe, malware-free, legally distributable, compatible with all devices, or automatically eligible for Google Play publication.
In particular, Google Play may require an AAB signed with the correct upload key and may impose additional technical and policy requirements. An APK re-signed using a different certificate may not be accepted as an update to an installed app. Always verify the relevant platform's requirements before publishing or distributing signed output.
14. Availability, Updates, and Responsibility
We take reasonable steps to maintain the App and address reported errors, but software may experience bugs, compatibility issues, interrupted operations, or temporary unavailability. Features may also be affected by Android changes, device limitations, file corruption, invalid credentials, insufficient storage, or third-party service issues.
Keep independent backups of important APK/AAB files, keystores, and credentials. To the extent permitted by applicable law, Krepel Studio is not responsible for losses caused solely by unlawful misuse, unauthorized third-party materials, or circumstances beyond our reasonable control. We do not exclude liability that cannot legally be excluded or limit mandatory consumer remedies.
We may release updates to improve functionality, security, and compatibility, subject to applicable obligations regarding digital content and services.
15. Stopping Use and Access
You may stop using AndroSigner at any time, including by uninstalling the App. Uninstalling does not automatically refund a completed purchase or erase separate files that you exported or stored outside the App.
We may take lawful measures necessary to protect the App, comply with legal obligations, or address serious misuse, subject to any applicable requirements and mandatory consumer rights. The App does not promise remote management of locally stored files or keys.
16. Changes to These Terms
We may revise these Terms to reflect changes in the App, its features, relevant platform requirements, or applicable law. The version and effective date shown on the published Terms page identify the applicable terms.
Where legally required, we will provide notice or available choices before a material change takes effect. Changes do not remove mandatory rights or remedies that have already accrued.
17. Applicable Law and Disputes
These Terms are subject to the laws applicable to your use of the App and your consumer relationship with the developer. Nothing in these Terms prevents you from exercising mandatory rights under the laws of your country or region of residence where those rights apply.
If you have a complaint, contact us first so we can try to resolve it. This does not restrict your right to contact a consumer authority, use an available dispute-resolution mechanism, or bring proceedings before a court with jurisdiction under applicable law.
18. Contact
For questions about these Terms, signing functionality, purchases, privacy, or support, contact:
Krepel Studio
Website: https://krepelstudio.com/
Email: Krepelstudio@gmail.com
App: AndroSigner: APK & AAB Signer
Android package: com.krepelstudio.androsigner
The applicable developer or trader information is also provided through the App's Google Play listing, as required by law and Google Play policies.