# Jolt Cycling: Zone 2 Training — Zones, routes & fueling alerts

> Zones, routes & fueling alerts (iPhone/iPad app by Amberglass.)

- Source: https://appshunter.io/ios/app/jolt-cycling-zone-2-training/id6775438225 (this page in markdown: same URL + `.md`)
- Developer: [Amberglass](https://appshunter.io/developer/982754464)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18 · 16 MB
- Languages: American English, Danish, Dutch, German (Germany), Hungarian, Polish
- Released: 2026-06-20
- Data updated: 2026-09-06
- User reviews in markdown: https://appshunter.io/ios/app/jolt-cycling-zone-2-training/id6775438225/reviews.md

## What is Jolt Cycling?

Jolt turns your iPhone into a heart rate zone computer for cycling. Big, glanceable numbers show your live heart rate, current zone and time in zone, so you can hold Zone 2 on endurance days and actually hit your intervals on hard days. No head unit needed.

WHY JOLT
On a training ride you shouldn't juggle a navigation app, a workout tracker and a kitchen timer. Jolt puts heart rate, route and fueling on one dark, sunlight-readable screen built for quick glances at 30 km/h.

TRAIN BY HEART RATE ZONE
- Live heart rate from a Bluetooth chest strap or your Apple Watch
- Current zone, percent of max and time in every zone, always visible
- Zones based on your max heart rate, fully configurable
- Colour-coded and readable in direct sunlight

FUEL ON TIME, EVERY RIDE
- Set an interval (for example every 30 minutes) and get a clear alert when it's time to eat
- Track carbs per hour against your target
- Never bonk on a long ride because you forgot to eat

FOLLOW ROUTES WITHOUT CLUTTER
- Import any GPX route from Komoot, Strava, RideWithGPS and others
- One clean line on the map: no POI pins, no search, no feed
- Elevation profile shows the climbs ahead and distance to go

TRACK EVERY RIDE
- Speed, distance, elevation, moving time and laps
- Workouts saved to Apple Health
- Export any ride as a GPX file via the share sheet

BUILT FOR REAL RIDES
- Designed for 1 to 4 hour training rides
- High-contrast dark interface, easy on battery, easy to read in sunlight
- Big, glove-friendly controls
- Works offline once your route is loaded

WHAT JOLT IS NOT
No social feed, no segments, no ads. Jolt does one thing: it keeps the numbers that matter in front of you while you ride.

WORKS WITH
Bluetooth heart rate straps (Polar, Wahoo, Garmin and other standard BLE straps) and Apple Watch. Requires iOS 18 or later.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://joltbike.app/privacy

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Jolt Pro | $8.99 | one-time |



## Version history (last 5 releases)

### 0.3.2 — 2026-08-27

• Jolt now speaks German, Dutch, Polish, Hungarian and Danish. Pick yours in Settings.
• Ride without a heart-rate strap — the map takes the top of the screen.
• A slim ECG trace sweeps once per heartbeat, in your zone's colour.
• Navigate plans across the whole of Europe from one map.

### 0.3.1 — 2026-08-08

All-new outdoor, satellite and hybrid maps on every screen.

The ride screen is redesigned: a full-width elevation profile coloured by how steep the road actually is, the map in its own column, and live calories in the FUEL tile with the eat-again countdown as its ring. Everything fits without scrolling, down to an SE.

Apple Watch heart rate no longer drops to zero when the watch link stutters.

You can also tap a café or trailhead straight off the map to ride there, expand a past ride's map full screen, and find Jolt Team at the top of Settings with Restore Purchases.

### 0.3.0 — 2026-07-15

Team/Coach Mode:
• Scan QR codes or enter 6-character join codes to form teams
• Real-time heart rate monitoring across teammate devices
• Auto-join preference in Settings toggle
• Lock-open HUD panel during rides with live status updates
• Zone bars show teammate distribution per HR zone
• Team tiles docked to map for glanceable group visibility

Home Screen:
• Reorganized layout: hero ride at top, actions below
• Compact design fits short screens (XS-class devices)
• Tappable last-ride hero for quick replay

Ride Experience:
• Collapsed lobby → start flow into one full-screen cover
• Dual HR readiness gates before ride start
• Better HR data retention with noise filtering
• Panel auto-closes on map countdown timer
• Optimized tile sizing for all screen sizes

### 0.2.3 — 2026-07-14

We've improved the stability of our navigation back-end.

### 0.2.2 — 2026-07-13

• Apple Health: rides now save to Apple Health automatically, with calories
  calculated from your heart rate. Toggle it on in Settings.
• Strava: connect your account to upload rides automatically when you finish,
  or sync any past ride with a tap.
• Fixes and refinements under the hood.

## More apps by Amberglass

- [AmberAI - AI Assistant](https://appshunter.io/ios/app/amberai-ai-assistant/id6446290308)

All apps by Amberglass: https://appshunter.io/developer/982754464

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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 2026-09-06.*