Are you using any analytics? E.g. Google, Flurry, Hockey, etc.
No. Analytics-based software design is the software equivalent of populism. Features should be things people request in an engaged manner. Things they consciously care about. Hence, my email address and the invitation to request features is openly displayed in the app.
Designing interactions based on "unconscious biases" encourages users to behaviourally devolve back into apes and lizards. Our strength and evolution lies in subtlety and diversity, not in catering to common-denominator patterns which we've inherited through our cellular heritage. It’s not a coincidence that Internet companies with analytics-driven product design have helped devolve global politics (from every side) into what it is today. I don’t want my apps to be any part of this.
On the iOS level, if you have chosen "share data with developers" as part of your device setup, iOS will send anonymised reports which are aggregated in iTunes across all users using differential privacy. These reports provide high-level reports of how many installations there are across all users, how long the average installation period was, etc. You can find out more about this at developer.apple.com, specifically search for iTunes Connect and Analytics.
Can you or any thirdy-party see the contents I saved in Gladys?
No. Gladys keeps everything locally on your device. If iCloud sync is enabled then it also uploads copies to your own private iCloud container, which not even Apple can access without your credentials. It never reports on user actions or user contents to anyone.
An exception is crash reports sent by iOS - which are both anonymised and enabled only if you have chosen the option to share such reports with developers during your device setup. Those reports however still do not contain any info on what a user stores or does - although they may reveal, from a technical perspective, the action that caused the crash: "app exploded when user clicked on button X" for example, to help trace the problem and fix it.
Does the app collect my personal information?
No. Gladys stores only what you explicitly provide, and it doesn’t inspect or care about what it is. iCloud or App Store login credentials are held by iOS and the app could not see them even if it wanted to.
When you store a URL link Gladys will scan the origin once to pick up the site’s title and preview icon, so in theory a site owner could tell that someone from your IP address dropped a link to their page in Gladys if they were scanning their access logs for that scan. The same goes when using the download option for a data component with a link.
How is my information protected?
Gladys doesn’t take any additional steps to protect your information above what your device/iOS and Apple already do, which is quite sufficient. While Gladys does not perform any further encryption of the data, it's worth mentioning that the local filesystem itself IS encrypted by Apple. However if another app inside your device were to "hack" iOS (a-la Jailbreak, for instance) then it could in theory access your data inside Gladys’ sandbox. This means that Gladys may not be a place to store extreme military secrets, for example, but pretty secure in almost every other sense.