# Fartlek: AI Running Intervals — Coach: Custom Runs & Plans

> Coach: Custom Runs & Plans (iPhone/iPad app by Axis SA.)

- Source: https://appshunter.io/ios/app/fartlek-ai-running-intervals/id6752724674 (this page in markdown: same URL + `.md`)
- Developer: [Axis SA](https://appshunter.io/developer/1621529800)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.5 · 29 MB
- Languages: American English, French (France), German (Germany), Hindi, Italian, European Spanish
- Released: 2025-10-30
- Data updated: 2026-07-18
- User reviews in markdown: https://appshunter.io/ios/app/fartlek-ai-running-intervals/id6752724674/reviews.md

## What is Fartlek?

Screenshot a workout. Describe it in a sentence. Or grab one from the library — and it's ready to run in seconds, warm-up to cooldown.

New: AI training plans that grow with you. Set a goal, and every run you finish shapes the next one.

50+ workouts runners actually love — HIIT, fartlek, tempo, hills, Yasso 800s. On iPhone and Apple Watch.

Because running the same pace every day only makes you better at running the same pace. Break the plateau.

EVERY RUN IS A NEW CHALLENGE
Every workout here has a specific goal and a different feel — so you actually train different muscles, systems, and skills instead of just logging miles. Your running workout is fun now :)

Speed: 200m pops, ladders, strides, sprint finishers
Strength: Hill repeats, power builders, switchbacks
Stamina: HIIT, Cruise intervals, tempo waves, Yasso 800s
Endurance: Progressive aerobic, negative splits, scenic cruises
Fun: Fartlek games, stoplight play, music flow runs

Each workout has a warm-up, main set, and cooldown — with clear effort guidance through every phase.

AI WORKOUT GENERATOR
Tell the AI coach what you want — "30 minutes, hill repeats, moderate" or "a fartlek that doesn't bore me" — and get a runnable workout in seconds. Paste a screenshot of a workout you saw online and we'll convert it into intervals.

A PLAN THAT GROWS WITH YOU
Tell your coach the goal — your first 5K, a faster 10K — and get a personalized training plan. Finish a run and the plan adapts: what comes next is always built on what you just did.

TRAIN BY EFFORT, NOT NUMBERS
Every interval shows a target effort (80% for work, 30% for recovery). No heart rate monitor needed. GPS pace lies anyway — effort just works better.

AUTO-LAP BY DISTANCE OR TIME
Distance intervals auto-complete when you hit 200m, 400m, 800m, or whatever target you set. Time intervals count down with precision. No fumbling with lap buttons mid-stride.

AUDIO & HAPTIC CUES
Get notified at interval start, halfway, and end. Works with your screen off, works on Apple Watch. Built for running outside, where you can't keep glancing at a screen.

APPLE WATCH COMPANION
Run straight from your wrist. Leave your phone behind for track sessions — the Watch app handles everything on its own.

CLEAN, GET-OUT-OF-THE-WAY DESIGN
Big, glove-friendly controls. Dark mode. One-screen run view with your current interval front and center, and what's next right there too.

AFTER YOUR RUN
Review every completed interval — distance, time, pace. Auto-syncs to Apple Health.

WORKOUT TYPES

Open Run: Free running with manual laps
Tempo: Sustained-effort training
Intervals: Structured speed work
Fartlek: Mixed-pace playful running
Hills: Uphill repeat sessions
Long Run: Extended endurance efforts

3 DURATION OPTIONS

Quick (10–15 min): Short, sharp sessions
Standard (20–35 min): Complete workouts
Long (40–60+ min): Extended training

WHO IT'S FOR
- Runners looking to improve their times
- Runners who like variety and fun
- Amateur athletes who want to gain leg strength and power
- Anyone looking to improve overall fitness and health
- Anyone looking to lose weight with HIIT (High-Intensity Interval Training)
- Anyone who wants to run intervals without 10 minutes of setup
- Anyone tired of complex running apps that feel more like Instagram

No social feeds. No data mining. Just running.
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly plan | $4.99 | per month |
| Yearly Premium | $29.99 | per year |



## Version history (last 5 releases)

### 1.7 — 2026-07-17

New: personalized AI training plans. Plus minor improvements.

### 1.6.1 — 2026-06-30

Polish and under-the-hood improvements for smoother runs.

### 1.6.0 — 2026-06-26

You can now edit your AI workouts — keep chatting with the coach to fine-tune any session.

### 1.5.0 — 2026-06-05

• Live Activity: follow your run from the Lock Screen and Dynamic Island.
• Apple Watch mirroring: start a workout on your Watch and pause, skip, or end it right from your iPhone.
• Refinements and polish across the app.

### 1.4.3 — 2026-05-28

Minor improvements and refinements.

## Apps similar to Fartlek

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Base Layer Coaching](https://appshunter.io/ios/app/base-layer-coaching/id6759665970) | — | Free | Health & Fitness |
| [Fartlek Interval Trainer](https://appshunter.io/ios/app/fartlek-interval-trainer/id1537547685) | — | Free | Health & Fitness |
| [HIIT & Run Interval Timer](https://appshunter.io/ios/app/hiit-and-run-interval-timer/id6749603263) | 5.0 (1) | Free | Health & Fitness |
| [Breathe for better HRV](https://appshunter.io/ios/app/breathe-for-better-hrv/id6479948641) | — | Free | Health & Fitness |
| [Custom Running Intervals](https://appshunter.io/ios/app/custom-running-intervals/id1533333253) | 2.0 (1) | Free | Health & Fitness |
| [Runs and Fartleks - IntervalUp](https://appshunter.io/ios/app/runs-and-fartleks-intervalup/id6467430781) | 1.0 (1) | Free | Health & Fitness |

## More apps by Axis SA

- [Facecam Recorder - ReactCam](https://appshunter.io/ios/app/facecam-recorder-reactcam/id1621529797)
- [Alba: AI Daily Planner](https://appshunter.io/ios/app/alba-ai-daily-planner/id6753690813)

All apps by Axis SA: https://appshunter.io/developer/1621529800

## Related topics

[hiit running workouts](https://appshunter.io/ios/topics/hiit-running-workouts)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-18.*