# Time Calculator Premium vs Notifications Center

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.

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.

## The numbers

| Metric | Time Calculator Premium | Notifications Center |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/time-calculator-premium/id1048440277/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 5 MB | 38 MB |
| Requires iOS | 15.6 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrien Brecheteau](https://appshunter.io/developer/956859837) | [AK-12 SRL](https://appshunter.io/developer/1332598229) |

## What reviewers say

### Time Calculator Premium

[App page](https://appshunter.io/ios/app/time-calculator-premium/id1048440277)

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.

**Highlights:** Add and subtract hours/minutes, Decimal time conversion, Save calculations, Multiply/divide time values, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Notifications Center

[App page](https://appshunter.io/ios/app/notifications-center/id1346602064)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Time Calculator Premium free?

Time Calculator Premium costs $3.99, with no in-app purchases.

### Is Notifications Center free?

Notifications Center is free to download, with no in-app purchases.

### Do Time Calculator Premium or Notifications Center have ads?

Neither Time Calculator Premium nor Notifications Center shows ads.

### Which is updated more often, Time Calculator Premium or Notifications Center?

Time Calculator Premium ships an update every 6 months, and Notifications Center every 2 weeks. Most recently, Time Calculator Premium was updated on November 11, 2026 and Notifications Center on November 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*