SplitShiftr

More bug fixes!

Take control of your activity data.

SplitShiftr is a powerful GPX editor for runners and cyclists who want full control over their activity files. Adjust splits, correct sensor data, and export a clean activity ready to upload anywhere.

Whether your watch recorded inaccurate pace, a GPS drift distorted your route, or a paused segment ruined your splits — SplitShiftr lets you fix it in seconds.

Key Features

Running & Cycling modes - Toggle between running (pace) and cycling (speed) for activity-appropriate editing.

Edit splits per kilometre - Adjust pace or speed for each segment or rebalance time across the activity.

Correct heart rate data - Offset, scale, or smooth heart rate readings affected by sensor errors.

Goal pace & speed calculator - Set a target time and automatically redistribute splits across the activity.

Edit activity metrics - Modify cadence, elevation, temperature, and other recorded values.

Remove pauses - Strip out breaks, stops, and paused segments to smooth your total time and get a clean, uninterrupted activity.

Route preview - Visualise your activity on a map and compare before and after changes.

Export GPX files - Download your edited activity and upload it to your training platform.

Fast processing - Edit and export most activities in under 30 seconds.

SplitShiftr works with GPX files from most running watches, cycling computers, and fitness apps.

Perfect for fixing: • GPS drift • Incorrect pauses • Sensor spikes • Split timing errors • Activity recording glitches • Long breaks inflating total time

SplitShiftr Pro

Unlock advanced editing tools and remove ads.

Pro features include: • Unlimited GPX processing • Per-split editing tools • Advanced activity charts • No ads

From £2.99/month or £19.99/year.

Subscription Information • SplitShiftr Pro Monthly — 1 month — £2.99/month, auto-renewing • SplitShiftr Pro Annual — 1 year — £19.99/year (£1.67/month), auto-renewing • Payment is charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period • Your account will be charged for renewal within 24 hours prior to the end of the current period • You can manage and cancel subscriptions in your App Store account settings after purchase • Privacy Policy: https://jackbarrell.github.io/splitr-legal/privacy.html • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeveula/