# NightKnight Glucose Tracker — Manage Diabetes Beautifully

> Manage Diabetes Beautifully (iPhone/iPad app by FERGUS COONEY.)

- Source: https://appshunter.io/ios/app/nightknight-glucose-tracker/id6784815820 (this page in markdown: same URL + `.md`)
- Developer: [FERGUS COONEY](https://appshunter.io/developer/6775220541)
- Category: Lifestyle, Medical
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English
- Released: 2026-07-03
- Data updated: 2026-07-21
- User reviews in markdown: https://appshunter.io/ios/app/nightknight-glucose-tracker/id6784815820/reviews.md

## What is NightKnight Glucose Tracker?

NightKnight is a fast, private, beautifully clear way to follow continuous glucose
monitoring (CGM) data from your own server. It connects to a NightKnight or
Nightscout-compatible deployment you control — so your glucose history stays yours,
never sold and never mined for ads.

A GLANCEABLE DASHBOARD
• Your current glucose in big, colour-coded type with a live trend arrow and a
  last-hour sparkline.
• A clean 24-hour chart with your target band, high/low lines, and points coloured
  by range. Drag across it to scrub any reading.
• Trailing summary you can flip between 24h, 7, 14, 30 and 90 days: updated GMI
  (uGMI), average glucose, Time in Range and variability (CV), with a stacked
  time-in-range bar.

ANALYSIS THAT ACTUALLY EXPLAINS ITSELF
• Glycemia Risk Index (GRI) with its hypo/hyper breakdown and risk zone.
• Ambulatory Glucose Profile (AGP): every day overlaid into one 24-hour picture with
  median and percentile bands.
• Time-of-day patterns — overnight, morning, afternoon, evening — so you can see when
  things drift.
• Hypo/hyper episode detection with a recent-events feed, plus advanced variability
  (J-Index, MAGE, CONGA, SD).
• Every metric has a plain-language "?" explainer with a link to the clinical source.

BOTH UNITS, FIRST-CLASS
mg/dL and mmol/L are both fully supported. Switch any time; every chart, metric and
alarm follows instantly.

ON-DEVICE ALARMS
Optional high, low and rapid-drop alerts that run on your phone. Simple on/off, no
accounts, nothing to configure in the cloud.

APPLE WATCH & WIDGETS
A glanceable Watch app and complication, plus Home Screen and Lock Screen widgets,
keep your latest number and trend a wrist-flick away.

APPLE HEALTH
Optionally read glucose from Apple Health, or write your readings back to it — you
choose, and you can turn it off any time.

PRIVATE & SECURE BY DESIGN
• Talks only to the server you point it at — your NightKnight or Nightscout instance.
• Credentials are sent in headers, never in the URL.
• Default deployment works behind Cloudflare Access with a service token.
• No third-party analytics, no advertising SDKs, no account with us.

WHAT YOU NEED
NightKnight is a follower/viewer app. You need a NightKnight or Nightscout-compatible
server with your CGM data. See github page for details. Add your server URL and device token in Settings and you're in.

NOT A MEDICAL DEVICE
NightKnight is for information and personal insight only. It is not a medical device
and must not be used as the sole basis for any treatment decision. Always confirm with
your CGM/meter and follow your healthcare provider's guidance.


## Version history (last 2 releases)

### 2 — 2026-07-08

Colour-matched widgets

### 1.0 — 2026-07-03

No release notes.

## More apps by FERGUS COONEY

- [Shortcutter HTTP Helper](https://appshunter.io/ios/app/shortcutter-http-helper/id6775220539)
- [Printer Invaders](https://appshunter.io/ios/app/printer-invaders/id6781042997)

All apps by FERGUS COONEY: https://appshunter.io/developer/6775220541

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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 2026-07-21.*