Comparison

Nightscout X vs iOB

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nightscout X

This app provides a mobile interface to view your Nightscout web page, displaying glucose levels from your CGM device. It offers features like lock screen widgets and settings to prevent screen locking or rotation, optimized for iPhone X but compatible with all iPhones and iPads.

Highlights
  • View Nightscout web page
  • iPhone X optimized
  • iPad compatible
  • Lock screen widget
  • Prevent screen locking
  • Lock screen rotation
Features
Read full description

An alternative client of Nightscout, developed in Swift and optimized for the iPhone X. * View your Nightscout web page with this app. * Optimized for iPhone X but working perfect on any iPhone. * Working perfect on iPad. * Widget to see the glucose with the screen lock. * App settings: prevent screen locking: with this option enabled, your device will not lock your screen automatically. * App settings: lock screen rotation: with this option enabled, your device will not rotate the screen. Nightscout project allow diabetics to see their glucose level in any connected device from their CGM device. More information and how to set up your Nightscout web page in www.nightscout.info

About

iOB

This app helps manage insulin doses by tracking long-acting and short-acting injections. Schedule reminders for injections and their expiration, and generate reports on average doses. It aids in understanding insulin on-board to avoid over-dosing.

Highlights
  • Track basal and bolus insulin doses
  • Schedule injection reminders
  • Set dose expiration notifications
  • Save entries to iPhone calendar
  • Generate average dose reports
  • Calculate insulin on-board
Features
Read full description

iOB was developed by a diabetic of 40 years and is a handy app for your iPhone to help you keep track of the insulin doses that you administer. Once you’ve spent a bit of time setting up your preferences and understanding the information iOB displays, we hope it’ll prove to be a valuable tool in making decisions on when and how much insulin to take. You can record both long acting (basal) and short acting (bolus) doses, and schedule notifications to remind you when the injections were taken, when they're going to expire and even schedule a dose for sometime in the future. Entries can be saved to the iPhone’s calendar and you can call up a report to show average doses that have been recorded. iOB is meant to help you work out how much insulin you have on-board and avoid stacking your insulin too much or knowing what kind of ‘top-up’ you could need. If you don’t understand insulin on-board or splitting doses please talk you your diabetic clinic or diabetes specialist nurse before using this app. ** iOB is not intended as a way to recommend how much insulin to take, only help you come to a decision. You must take insulin based on your experience, current circumstances and what you have been told by your clinic. *** iOB cannot magically tell you how much insulin is actually active in your body and is meant only for information purposes. Do not ignore how you feel!

Screenshots

Nightscout X4 screens
iOB4 screens

Verdict

The call

The clearest difference is price: Nightscout X at Free against iOB's $0.99. Nightscout X also leads on rating (4.3 vs 3.6) and update cadence (every 2 weeks vs every 2 months). iOB's advantage is in-app purchases (none vs 5) and review sentiment (77% vs 63%). On ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Nightscout X is free to download; iOB costs $0.99 up front. Nightscout X sells 5 one-off in-app purchases. iOB asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Nightscout X holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 12 and 10 respectively. Written reviews complicate that: 63% of Nightscout X's written reviews are positive against 77% of iOB's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Nightscout X ships an update every 2 weeks, iOB every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
Nightscout X versus iOB: the parameters behind the verdict, then further details
ParameterNightscout XiOB
PriceFree — better$0.99
Rating4.3 (12 ratings) — better3.6 (10 ratings)
Positive reviews62.5% of reviews76.9% of reviews — better
Number of ratings12 — better10
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better14.0
Further details — not scored
Size16 MB10 MB
Age rating17+4+
DeveloperDaniel Fernandez GarciaBrightScreenTV

Customer experience

Nightscout X

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews8 reviews
Positive62.5%
Neutral25.0%
Negative12.5%

iOB

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

In-app purchases

5 purchases

Nightscout X

One-time5
  • Contribution - Expresso$0.99
  • Contribution - Macchiato$1.99
  • Contribution - Cappuccino$3.99
Show 2 more
  • Contribution - Latte$5.99
  • Contribution - Mocha$8.99
None

iOB

No in-app purchases

Questions

Is Nightscout X free?
Nightscout X is free to download, with in-app purchases available.
Is iOB free?
iOB costs $0.99, with no in-app purchases.
Which has better reviews, Nightscout X or iOB?
Nightscout X is rated higher. Nightscout X averages 4.3 out of 5 from 12 ratings, while iOB averages 3.6 from 10 ratings.
Do Nightscout X or iOB have ads?
Neither Nightscout X nor iOB shows ads.
Which is updated more often, Nightscout X or iOB?
Nightscout X ships an update every 2 weeks, and iOB every 2 months. Most recently, Nightscout X was updated on November 2, 2026 and iOB on November 3, 2026.

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