Doku Solver

Doku Solver / Terms of use

Terms of use

Last updated November 4, 2026

A guide to using Doku Solver and finding the terms that apply to your store download. This page does not replace those terms or limit your mandatory consumer rights.

About the app

Doku Solver is an independent puzzle utility provided by John Cotter, with app identifier io.johncotter.dokusolver. It processes puzzle images and produces hints or solved pictures on your device. Public availability varies by store, device, country and release status.

Puzzles and screen assistance

Import images you have permission to use and avoid including unrelated personal information. The optional Android helper requires your permission and a deliberate capture of a supported game board. You can stop it or turn off its access in device settings. Recognition may be uncertain; the support guide explains how to review a grid.

Supported games remain separate products governed by their own terms. Their names identify compatible puzzle formats and do not imply affiliation or endorsement. Doku Solver does not grant rights to another publisher's game or artwork.

Trial and purchases

Android editions with a trial counter include ten successfully solved puzzles. A one-time Google Play full-app purchase unlocks further solves and hints; it is not a subscription. Your store shows the applicable localized price before confirmation. Pending or canceled payments do not grant the unlock.

Restore a completed purchase with the same Google Play account. Purchase and restore checks require a connection to Google Play. See the support guide for the existing trial, payment and restore behavior. The current iOS edition is free and does not include this Android purchase.

Local data and privacy

Doku Solver has no developer-operated puzzle history or cloud backup. Clearing app storage or uninstalling can remove local app data, subject to your device's separate backup behavior. The privacy policy describes temporary images, trial and purchase records, permissions and support correspondence.

Applicable store terms

Your download and purchases remain subject to the terms presented by the relevant store and the license applicable to that copy. For reference, see Apple's standard app license agreement and the Google Play Terms of Service. Included open-source components remain subject to their own licenses.

Support and consumer rights

For app support, email support@johncotter.io. For privacy questions or requests, email support@johncotter.io. No account or purchase is needed to ask for help.

Your rights under the applicable store agreement, open-source licenses and mandatory consumer law remain in place. The date above identifies the latest update to this page.