Name: Flex Intervals
Author: humunkulud

Flex Intervals is an offline interval timer for Garmin watches and compatible Edge cycling computers. Start with a preset or edit your two reusable workout templates, then build sessions with independent work/rest stages, preparation, cooldown, and nested repeat blocks.

- Nine presets: Tabata, HIIT, EMOM, AMRAP, boxing, circuit, pyramid, focus, and meditation. Run a preset immediately or confirm saving it over CUSTOM.
- Name your workouts, stages, and blocks. Enter names with the shared button/touch character editor or choose a common exercise label. Duplicate stages and blocks, move them, wrap a section in repeats, or restore a template.
- Independent stage durations with one-second, five-second, and one-minute editing steps. Up to four repeat levels, 64 stages/blocks, and a total duration below 100 hours; zero-second stages are skipped.
- Optional recovery time between block repetitions.
- Large adaptive timer digits, explicit pause status, light and dark displays, and a separate hours label for longer timers.
- Optional transition sound and vibration, countdown off or 3/5/10 seconds, independent countdown tone and vibration, and low/medium/high vibration intensity where supported. A preview helps check your cues; unsupported controls are hidden.
- A stopwatch with up to 128 named, individually deletable laps, individual lap durations, cumulative splits, and optional sounds for start/resume, pause, lap, and confirmed reset.
- Button navigation and touch scrolling on supported devices. Confirmations protect deletion, template replacement, timer stop/restart, and stopwatch reset/discard.
- Monochrome Instinct and Descent G1 layouts put round/menu/lap information in the inset screen. Compatible Edge models use the same standalone timer.
- Optional KEEP AWAKE while a workout or stopwatch is running; DIM DISPLAY requests 10% brightness on compatible devices. Both default to off and remain subject to Garmin display protections.
- Two workout templates and display/cue preferences saved locally on your device.
- Local session checkpoints every five seconds and on session changes. Enable RESTORE to reopen an interrupted workout or stopwatch paused at its last successful save, with downtime excluded; it defaults to off.

The interface is English. Sound, vibration, intensity adjustment, display controls, and touch support depend on the device. KEEP AWAKE releases when paused, finished, hidden, or exited; on MIP devices it controls the backlight. Keeping the display awake increases battery use, and Garmin can limit or reject requests. DIM DISPLAY requires a compatible backlight API on Connect IQ 3.2.1 or newer. Keep the app session open while timing: timers do not run as a background service. Optional RESTORE reopens an interrupted session paused after a restart; it never counts downtime. EMOM uses timed rounds; AMRAP is a countdown cap without rep logging. This standalone app does not record activities or synchronize workouts to Garmin Connect.

For intervals alongside a recorded activity, install the separate Flex Intervals Field data field and add it to a native activity screen. Its settings are independent of this app's saved workouts. Neither app requires a companion account or internet connection.

Activity data field: https://apps.garmin.com/apps/f0b6f29d-bb60-4073-ad99-f80e16e80d0f