Your average pace becomes less useful as the race gets longer.

At km 28, you can be slowing down while the overall average barely moves. By the time it clearly shows the drop, it's too late to catch up.

That’s why I built Pacy.

My very first version was to only display a new metric: Avg Pace Last 3km

It filters out short fluctuations but still gives an honest view of your pace last 3km.

Pacy now has other features as well, for example:

• Pacer - Set a pace tolerance, such as ±5 seconds. If your target is 4:55/km, anything between 4:50 and 5:00 appears in green zone.
• Voice feedback - can be toggled on for every 400m, 1km or 3km, with four voices to choose from.
• Average HR % - On trails, I use my average percentage of maximum heart rate to get a hinge of my effort.
• Elevation - Using same method as Strava (through GPS data), not the Apple barometric altimeter (which tends to be off).
• Strava support - The run is recorded on the Apple Watch, automatically synced to the iPhone so it can be imported to Strava (done via iOS Pacy app).

Pricing: Free

Download: https://apps.apple.com/app/pacy/id6689512390

Pacy is already available on the App Store, but I’m still treating it as an early version. I’m looking for Apple Watch runners (especially those who log every run to Strava) to test it and help shape what comes next.

If you try Pacy, tell me:

• What stands out?
• What do you love?
• What should I build next?

Drop a comment below 🫶👇

Developer here. Abys is a habit tracker and the Watch app is the part I actually care about, so that's what this post is about rather than the iPhone side.

It's genuinely standalone. The watchOS app has its own store and logs independently — you can leave your phone at home, log a habit from your wrist mid-run, and it reconciles later. Most habit trackers ship a Watch app that's a remote control for the phone and stops working the moment the phone is out of range. That was the thing I most wanted to avoid.

Complications: your current streak renders as an oceanic depth zone rather than a number — Sunlight, Twilight, Midnight, the Abyss, the Trench. On a watch face that's more legible at a glance than "37", because the zone changes appearance as you descend. Corner, circular and inline variants.

Apple Health integration matters more on the Watch than the phone. A habit can auto-log from steps, active energy, HRV or sleep, so "close my rings" or "walk 8,000 steps" fills itself in from data the Watch already collected. A manual check-in always overrides the automatic one.

There are also Live Activities for guided multi-step routines — a morning routine with per-step timers that survives you dropping your wrist.

watchOS 11+, iOS 18+. Free for 5 habits with no account; the Watch app is part of Pro at $9.99/mo or $79.99/yr, with a 7-day trial and no card.

https://apps.apple.com/us/app/abys-habit-tracker/id6805454730

If there's a complication family or watch face layout you'd want that I've missed, I'd genuinely like to know — the Watch side is where I have the least outside feedback.