Knowledge base
The glossary
Every term we use with clients, defined plainly. Browse a subject area, jump to a letter, or search.
- 8 concepts
- 32 subject areas
All concepts, A to Z
U
Uninstall Rate Uninstall rate is the share of people who delete your app after installing it, and the fastest honest signal that something on the first screen is wrong. Read the definition Upselling Upselling is offering a customer a better or bigger version of what they already chose, at the moment they have decided but have not yet paid. Read the definition Uptime Uptime is the share of time a system stays available and working, usually written as a percentage over a month, such as 99.9%. Read the definition URL Redirect A URL redirect is a note left at an old web address that quietly sends every visitor and every search engine to the page's new home. Read the definition User Acceptance Testing UAT User acceptance testing is the buyer's own check of a new system before signing it off, run on the real machines over a few ordinary working days. Read the definition User Access Review A user access review is a regular check of who can still log into your systems, including the accounts nobody remembers creating. Read the definition User Roles and Permissions User roles and permissions decide who may do what inside a system, so a receptionist can book an appointment without ever seeing what the treatment cost. Read the definition UTM Parameters UTM UTM parameters are short tags added to the end of a link so your reports can tell you which advert, email or post actually brought the sale. Read the definition
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