# Lact8 — Lactate Threshold Testing

> Lactate Threshold Testing (iPhone/iPad app by BEN REEVE.)

- Source: https://appshunter.io/ios/app/lact8/id6757203590 (this page in markdown: same URL + `.md`)
- Developer: [BEN REEVE](https://appshunter.io/developer/1835532057)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English
- Released: 2026-01-05
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/lact8/id6757203590/reviews.md

## What is Lact8?

Lact8 helps athletes identify their lactate thresholds (LT1 and LT2) from step test data and calculate personalized training zones.

Features:

  • Record lactate, heart rate, and power/pace from step tests
  • Automatic threshold detection using proven methods
  • Multiple zone systems (3-Zone, 7-Zone Touretski, 8-Zone Couzens)
  • Track threshold progression over time
  • Export data as CSV, JSON, or Markdown

Perfect for cyclists, runners, and triathletes who want data-driven training zones based on their own physiology.


## Version history (last 2 releases)

### 1.1 — 2026-01-11

Minor bugfixes

### 1.0 — 2026-01-05

No release notes.

## More apps by BEN REEVE

- [GrappleTimer](https://appshunter.io/ios/app/grappletimer/id6751516133)

All apps by BEN REEVE: https://appshunter.io/developer/1835532057

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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 2026-05-17.*