Time Calculator Premium vs Notifications Center
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time Calculator Premium
Easily add and subtract hours and minutes without complex conversions. This app remembers your calculations and allows for large hour amounts, plus decimal conversion. The premium version offers multiplication and division of time values.
- Add and subtract hours/minutes
- Decimal time conversion
- Save calculations
- Multiply/divide time values
- Ad-free experience
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Our calculator is designed to help you add and subtract hours and minutes rapidly and without going into complicated conversions. Handy and user friendly, you will be able to see your calculations as you write them down and thus not loosing the thread during long additions. The App keeps all your calculations in memory after closing it. You can calculate up to hundreds of thousands of hours. You can easily convert hours in decimal for instance 2h30 = 2,5 With this Premium version you will also be able to divide and multiply your hours and minutes. The Premium version doesn’t have any adds.
Notifications Center
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Attraverso questa applicazione gli utenti avranno la possibilità di ricevere notifiche ed informazioni relativamente alla partecipazione ad eventi, diffusione di notizie ed avvisi provenienti dalle organizzazioni di interesse mediante il sistema Notifications Center. L'applicazione è dedicata a tutti gli utenti aderenti alle organizzazioni facenti parte del sistema Notifications Center.
Screenshots
Verdict
The clearest difference is price: Notifications Center at Free against Time Calculator Premium's $3.99. Notifications Center also leads on update cadence (every 2 weeks vs every 6 months) and iOS requirement (12.1 vs 15.6). On ads, in-app purchases 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
Notifications Center is free to download; Time Calculator Premium costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Time Calculator Premium ships an update every 6 months, Notifications Center every 2 weeks. Both last shipped on November 11, 2026.
| Parameter | Time Calculator Premium | Notifications Center |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.6 (10 ratings) — better | — |
| Positive reviews | 68.8% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 6 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Adrien Brecheteau | AK-12 SRL |
In-app purchases
Time Calculator Premium
No in-app purchases
Notifications Center
No in-app purchases
Questions
Is Time Calculator Premium free?
Is Notifications Center free?
Do Time Calculator Premium or Notifications Center have ads?
Which is updated more often, Time Calculator Premium or Notifications Center?
Other comparisons
