Perhaps the most significant difference between the old version and the new is the reliance on local storage. In 2014, "the cloud" was not yet fully trusted by the masses. Keepsafe was primarily a local locker. What happened on the phone, stayed on the phone. This offered a sense of security that modern cloud-synced apps sometimes struggle to replicate.
Forget about restoring "broken" vaults. If you lose your PIN or the app corrupts your data, KeepSafe support will not help you with a version from the Obama administration. You will lose your files permanently. keepsafe old version 2014
For the average user with a modern iPhone or Pixel 7, installing the 2014 version is a terrible idea. It is unstable, insecure, and likely non-functional. You are better off paying the small subscription fee for the modern version or switching to a secure alternative like "Keepsafe Photo Vault (Premium Classic)" if you can find a legacy license. Perhaps the most significant difference between the old