Comparison

Wattify vs ChangeDay

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

Head to head
About

Wattify

Features
Read full description

With the Wattify app, you can easily manage your (semi)-public charge stations, split billing accounts, residencies, find an available charge point, review your charge sessions and much more. Key features include: * Charge card, session and invoice overviews * Personal charge site information * Realtime information on availability and pricing details * Map with driving directions using Google Maps * Profile management

About

ChangeDay

Features
Read full description

ChangeDay helps people with Type 1 Diabetes and their caregivers remember when insulin infusion sites, CGMs, and pump batteries were last changed, and when they are due next. Built for simple shared routines, ChangeDay keeps the focus on the three things you need to check quickly: your site, your sensor, and your pump battery. Log a change in one tap, see the next due day, and optionally share the same tracker with a caregiver or family member using Apple’s CloudKit Sharing. Whether you are tracking your own routine or helping someone else stay organized, ChangeDay is designed to be calm, private, and easy to use. Key features: β€’ Track insulin infusion site changes β€’ Track glucose sensor change days β€’ Track insulin pump battery changes β€’ See last changed and next due dates at a glance β€’ Log site, sensor, or pump battery changes in one tap β€’ View upcoming change days on a simple calendar β€’ Review change history β€’ Set local reminders for due dates β€’ Share one tracker with another person using iCloud/CloudKit Sharing β€’ Keep data stored locally and in your personal iCloud account β€’ No account, ads, or subscription ChangeDay is intentionally simple. It is not a blood glucose tracker, dosing calculator, medication manager, or diabetes treatment app. It does not provide medical advice, dosing guidance, diagnosis, treatment recommendations, or emergency alerts. Always follow guidance from your clinician and the instructions from your device manufacturer.

Screenshots

Wattify4 screens
ChangeDay4 screens

Verdict

The call

The clearest difference is device support: Wattify at 3 against ChangeDay's 1. Wattify also leads on iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences Β· 4 level
Wattify versus ChangeDay: the parameters behind the verdict, then further details
ParameterWattifyChangeDay
PriceFreeFree
Update frequencyMonthlyβ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS15.1 β€” better17.6
Further details β€” not scored
Size69 MB5 MB
Age rating4+4+
DeveloperWattify BVjonathan hering

In-app purchases

None

Wattify

No in-app purchases

None

ChangeDay

No in-app purchases

Questions

Is Wattify free?
Wattify is free to download, with no in-app purchases.
Is ChangeDay free?
ChangeDay is free to download, with no in-app purchases.
Do Wattify or ChangeDay have ads?
Neither Wattify nor ChangeDay shows ads.

Other comparisons