# Fondo - Zone 2 Training — Zone 2 heart rate training

> Zone 2 heart rate training (iPhone/iPad app by Lorenzo Franceschini.)

- Source: https://appshunter.io/ios/app/fondo-zone-2-training/id6822203361 (this page in markdown: same URL + `.md`)
- Developer: [Lorenzo Franceschini](https://appshunter.io/developer/1870782240)
- Category: Health & Fitness
- Price: Free
- Age rating: 12+
- Requires: iOS 18.0 · 5 MB
- Languages: American English, Italian
- Released: 2026-10-14
- Data updated: 2026-10-14

## What is Fondo?

Fondo helps you build your aerobic base with Zone 2 training: the intensity at which you can still hold a conversation, the one that improves endurance and recovery.

A GOAL EVERY WEEK
• Choose how many Zone 2 minutes to do each week: Fondo counts them and tells you how many are left, day by day.
• The 80/20 balance shows whether you're keeping about 80% of your time easy.

TRAIN WITH A STRAP OR APPLE WATCH
• Connect a Bluetooth heart rate strap (Polar, Garmin, Wahoo and other compatible straps) or train directly with Apple Watch.
• Pick the zone to hold and the duration: if you leave your zone, a voice tells you to slow down or push a little, and your phone or watch vibrates.
• Heart rate, zone and time stay visible on the Lock Screen and in the Dynamic Island.

INTERVALS
• Ready-made workouts: Norwegian 4×4, 30/30 and 5×3′, with adjustable repetitions, durations and zones.
• Spoken cues at every phase change: warm-up, work, recovery, cool-down.

ZONES MADE FOR YOU
• Zones calculated from your max and resting heart rate, using the Karvonen method or % of max HR, or set manually.
• With the Health app, Fondo estimates your max heart rate from your age and reads your resting heart rate.

HEALTH, WIDGETS AND TRENDS
• With Health, workouts from Apple Watch and other apps count too; workouts recorded with Fondo are saved to Health.
• Widgets for the Home Screen and Lock Screen.
• Trends: Zone 2 minutes per week, resting heart rate and VO2 max.

ONE PRICE, FOREVER
Fondo is free to download with a 14-day full trial, no sign-up and no card required. Then a one-time purchase unlocks everything forever: no subscription, no ads. If you don't unlock, your week and zones remain available.

PRIVACY
No account, no servers, no tracking. Your data stays on your iPhone, your Apple Watch and in the Health app.

Fondo is not a medical device and does not replace medical advice.


## Version history (last 1 release)

### 1.0 — 2026-10-14

No release notes.

## More apps by Lorenzo Franceschini

- [SteelGO](https://appshunter.io/ios/app/steelgo/id6758082152)
- [SteelLog Workout Tracker](https://appshunter.io/ios/app/steellog-workout-tracker/id6758090335)
- [TrainingData: Personal Trainer](https://appshunter.io/ios/app/trainingdata-personal-trainer/id6767159828)
- [Ritmo Workout Timer](https://appshunter.io/ios/app/ritmo-workout-timer/id6779528819)
- [FittyPal Fitness Tracker](https://appshunter.io/ios/app/fittypal-fitness-tracker/id6780820420)

All apps by Lorenzo Franceschini: https://appshunter.io/developer/1870782240

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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 2026-10-14.*