The stock iOS Clock app has several useful features, including alarms, a timer, world clock and stopwatch. The stopwatch function is great for clocking lap times, but there aren't any options to save these numbers once collected. Now thanks to the jailbreak tweak Stopwatch Pro, the iOS clock can be even more useful.
There are no settings to configure once Stopwatch Pro is downloaded and installed via Cydia. The tweak simply adds a Save button to the stopwatch, making it possible to save a time or a series of laps before resetting and losing the information. All of the saved times can be labeled in different sections to keep track of events and group related measurements.
Of course, times can be reorganized or deleted directly while viewing the list. Instead of struggling to record several stopwatch times individually, Stopwatch Pro integrates the process into the stock Clock app. Although the tweak adds a new way to manage stopwatch times on an iOS device, as of this writing there's no simple way to share or export this data from the Clock app.
Stopwatch Pro is available on Cydia from the BigBoss repository for $0.99. Check here for instructions on how to jailbreak iOS 6.x with evasi0n. You can also find out how to purchase and install Cydia tweaks with this guide.