iShredder: Secure Data Eraser

What Data Eraser - iShredder is for

Data Eraser - iShredder is an Android app for erasing chosen files and overwriting unused storage on a phone. The listing names two situations: a phone you keep that holds sensitive files, and a phone you are selling, repairing or handing over. It also lists clearing work files on personal or shared devices, under an organization's policy.

Selecting photos, documents and folders to erase

A built-in file explorer lets you pick what to remove, such as private photos, videos, downloaded PDFs, scanned identity documents and work files you no longer need. Because you choose the items, you set the scope yourself instead of running a full factory reset to clear a few files. Supported SD cards can also be processed where they are accessible.

Wiping unused storage after files are deleted

Deleting a file and overwriting unused storage are separate operations in iShredder. The unused-space wipe writes to free storage to reduce accessible remnants of files you removed earlier. The listing says this is a privacy function and does not add to the phone's total storage, and it advises choosing it when the goal is to address traces of content already removed.

Overwrite methods, workflow and erasure reports

Overwrite methods include single-pass and multi-pass options, plus DoD 5220.22-M. The listing says the right method depends on the storage and the task rather than the highest pass count, and that more passes take longer. Available methods depend on your edition, and some features require an in-app purchase or subscription, with billing period and renewal terms shown in the app.

A typical run follows three steps: back up what you want to keep, select the files or unused storage and pick a method, then run the operation and review the result. Reports, which vary by edition, document a completed operation for your own records, a device handover or an internal review. The listing notes that a report records the selected process and does not guarantee every copy of a document is gone.

Erasure limits and the cited security validation

The listing says results depend on encryption and flash storage, and that app-level overwriting cannot guarantee access to every physical flash cell. Cloud backups and copies on other devices must be managed separately. For a full handover, it also directs you to the manufacturer's account-removal and factory-reset steps.

The listing cites a March 2026 DEKRA MASA L1 validation of version 7.2.3 against selected OWASP MASVS app-security requirements, and a Fortress Cybersecurity Award 2025. It presents both as separate from the outcome of any single erase operation.