# Time & Date Calculator ++ vs Decibel Meter Plus Pro

The clearest difference is price: Time & Date Calculator ++ at Free against Decibel Meter Plus Pro's $2.99. Time & Date Calculator ++ also leads on review sentiment (84% vs 53%) and update cadence (every 3 weeks vs every 2 months). Decibel Meter Plus Pro's advantage is iOS requirement (15.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Time & Date Calculator ++ is free to download; Decibel Meter Plus Pro costs $2.99 up front. Time & Date Calculator ++ sells 2 in-app purchases, starting at $1.99 per month and Decibel Meter Plus Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Time & Date Calculator ++ ships an update every 3 weeks, Decibel Meter Plus Pro every 2 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Time & Date Calculator ++ | Decibel Meter Plus Pro |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[3.7 (81 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews)** |
| Number of ratings | — | **81** |
| Positive reviews | **83.7% of reviews** | 52.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 11 MB | 12 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Verosocial Studio](https://appshunter.io/developer/354566841) | [华芳 张](https://appshunter.io/developer/586041482) |

## What reviewers say

### Time & Date Calculator ++

[App page](https://appshunter.io/ios/app/time-and-date-calculator-plus-plus/id430831835)

This app provides a fast and accurate way to perform calculations involving dates and times, eliminating the need for manual methods or spreadsheets. It's ideal for professionals who need precise results for work hours, payroll, billing, and more, with a clean interface and offline functionality.

**Highlights:** Add and subtract time instantly, Convert time formats (HH:MM, decimal hours, total minutes), Accurate payroll and billing calculations, Persistent calculation history, Clean, calculator-style interface, Works fully offline

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $1.99 | per month |
| Lifetime Pro Unlock | $14.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick calculations
- 👍 Versatile for various needs
- 👍 Helpful for work/scheduling
- 👍 Great for time calculations

**What reviewers complain about**

- 💰 Subscription required
- 🐛 Broken since last update
- 🐛 UI issues with left/right-handed modes
- 🐛 Calculator buttons too small
- 🐛 No decimal hours in recent versions

**Reported bugs**

- Calculation list hidden under selection menu in right-handed mode
- Keypad hidden in left-handed mode
- 'Number of days between dates' calculator not working
- Tapping 'today' button no longer enters today's date
- Calculate button does nothing for 'number of days between dates'

**Requested features**

- Add decimal hours back
- Bring back option for permanent left-side selection menu
- Get rid of pointless back arrow
- Add milliseconds support
- Allow multiple time entries for adding up hours


### Decibel Meter Plus Pro

[App page](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476)

Measure the sound levels around you with this utility app. It displays average, peak, and max values, offers decibel exposure time guidelines, and provides information on noise-induced hearing loss. The app also allows data recording and export for analysis.

**Highlights:** Measure sound levels, Display average, peak, and max values, Decibel exposure time guidelines, Information on noise-induced hearing loss, Record and export data, Calibrate measurements, Universal app support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Reports | $4.99 | one-time |


## Frequently asked questions

### Is Time & Date Calculator ++ free?

Time & Date Calculator ++ is free to download, with in-app purchases available.

### Is Decibel Meter Plus Pro free?

Decibel Meter Plus Pro costs $2.99, and also offers in-app purchases.

### Do Time & Date Calculator ++ or Decibel Meter Plus Pro have ads?

Neither Time & Date Calculator ++ nor Decibel Meter Plus Pro shows ads.

### Which is updated more often, Time & Date Calculator ++ or Decibel Meter Plus Pro?

Time & Date Calculator ++ ships an update every 3 weeks, and Decibel Meter Plus Pro every 2 months. Most recently, Time & Date Calculator ++ was updated on October 30, 2026 and Decibel Meter Plus Pro on October 29, 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.*