Kompanion App Review UK (2026)

A fasting tracker with ketosis monitoring - mixed reviews on value and subscription practices

Trustpilot No reviews
Claimed Users 15M+
Price ~£40/yr
Best For Fasting beginners
Quick Verdict: Kompanion (sometimes called "Kompanion Fasting Tracker 16:8") is a fasting app that tracks your fasting windows and estimates when you enter ketosis and autophagy. With claimed 15 million users but no Trustpilot presence, reviews are mixed - some appreciate its simplicity, others criticise pricing transparency and subscription practices.

What is Kompanion?

Kompanion positions itself as "the ultimate fasting tracker" - helping users follow intermittent fasting protocols like 16:8. It focuses on when you eat rather than what you eat, with visual feedback on your body's metabolic state.

The app tracks estimated biological stages during fasting: when you enter ketosis, when autophagy may begin, and when insulin levels decline.

What Kompanion Offers

  • Fasting Timer: Track fasting windows for various protocols
  • Ketosis Tracking: Estimates when you enter ketosis
  • Autophagy Indicator: Shows when cellular cleanup may begin
  • Body Stage Tracking: Visual feedback on metabolic state
  • Fasting History: Track your progress over time
  • Reminders: Notifications for eating windows

Kompanion Pricing

  • Free Version: Limited features
  • Premium Monthly: Around $9.99/month (~£8)
  • Premium Annual: Around $49.99/year (~£40)

Pricing may vary based on promotions. Some users report confusion about what's included free versus premium.

Subscription Concerns: While Kompanion has no Trustpilot reviews, App Store feedback mentions: subscription cancellation difficulties, pricing not clearly explained upfront, charges appearing after trials, and limited functionality for the cost. Be very clear about trial terms before signing up.

How It Works

Kompanion focuses on the timing aspect of intermittent fasting:

  1. Set your fasting protocol (16:8, 18:6, etc.)
  2. Start your fast when you finish eating
  3. Watch the timer count through metabolic stages
  4. Get notified when your eating window begins
  5. Track your fasting history and streaks

The body stage indicators (ketosis, autophagy) are estimates based on typical fasting timelines, not actual measurements.

Pros & Cons

Pros

  • Simple fasting timer
  • Visual body stage feedback
  • Ketosis/autophagy estimates
  • Multiple fasting protocols
  • Easy to understand

Cons

  • No Trustpilot presence
  • Subscription complaints
  • Pricing transparency issues
  • No meal tracking
  • Limited free features
  • Stage estimates not measured

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What Users Say

With no Trustpilot reviews, feedback comes from app stores and review sites:

"Simple and easy to use for tracking fasting times. The ketosis stage indicator is motivating during longer fasts." - App Store review
"Subscription charges weren't clear. Got charged after what I thought was a free trial. Difficult to cancel." - User feedback analysis

What positive reviewers say: Simple, motivating stage tracking, easy to use

What negative reviewers say: Subscription issues, limited for the price, basic features

Who Kompanion Is For

Fasting Beginners

Simple interface for those new to IF.

Visual Learners

Like seeing body stage indicators.

Timer-Only Users

Just want to track fasting windows.

Careful Subscribers

Willing to manage subscription closely.

Who Should Look Elsewhere

  • Calorie trackers: No food logging - just timing
  • Those wanting free apps: Free version is limited
  • Users concerned about billing: Subscription complaints exist
  • Detail seekers: Very basic feature set

The Bottom Line

Kompanion is a straightforward fasting timer with visual indicators for ketosis and autophagy stages. For users who just want to track fasting windows without complicated features, it delivers that simply.

However, the lack of Trustpilot presence and App Store complaints about subscriptions are concerning. The app also doesn't track what you eat - only when - which limits its usefulness for comprehensive health tracking.

If you want a basic fasting timer, Kompanion works. But be extremely careful with any trial or subscription - note exactly how to cancel and monitor your payment methods. Free alternatives like Zero may offer similar functionality with fewer billing concerns.

Our verdict: Basic fasting timer. Subscription caution needed. Consider free alternatives.

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