# Calculator++P vs Interval Voice Clock

The clearest difference is update cadence: Interval Voice Clock at every 2 weeks against Calculator++P's every 3 months. Interval Voice Clock also leads on price ($1.99 vs $2.99). Calculator++P's advantage is rating (4.2 vs 4.0) and iOS requirement (13.0 vs 15.0). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Calculator++P costs $2.99 and Interval Voice Clock $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator++P holds the better App Store score, 4.2 against 4.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 67% of Calculator++P's written reviews are positive against 63% of Interval Voice Clock's.

Calculator++P ships an update every 3 months, Interval Voice Clock every 2 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Calculator++P | Interval Voice Clock |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/calculator-plus-plus-p/id1072096140/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/interval-voice-clock/id6476801545/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | **66.7% of reviews** | 62.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 73 MB | 32 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [YUTAKA KENJO](https://appshunter.io/developer/1070080613) | [Ryo Okamoto](https://appshunter.io/developer/418850607) |

## What reviewers say

### Calculator++P

[App page](https://appshunter.io/ios/app/calculator-plus-plus-p/id1072096140)

This utility app simplifies calculations with expression input, one-touch discount and tax calculations, and automatic history saving. It offers a memory function and customizable decimal/punctuation formats for efficient use in everyday scenarios like shopping and estimations.

**Highlights:** Expression-based calculations, One-touch discount and tax calculation, Automatic calculation history, Memory function (M+, M-, MC, MAC), Customizable decimal and punctuation formats, Resumable calculations after interruption

**Features:** Vision Pro support

**In-app purchases:** none


### Interval Voice Clock

[App page](https://appshunter.io/ios/app/interval-voice-clock/id6476801545)

This app announces the current time at customizable intervals, allowing for hands-free time checks. It offers adjustable volume, voice options, and background playback, functioning entirely offline.

**Highlights:** Customizable announcement intervals, Adjustable announcement volume, Choice of male or female voice, Background playback support, Offline functionality, Multiple announcement types

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator++P free?

Calculator++P costs $2.99, with no in-app purchases.

### Is Interval Voice Clock free?

Interval Voice Clock costs $1.99, with no in-app purchases.

### Which has better reviews, Calculator++P or Interval Voice Clock?

Calculator++P is rated higher. Calculator++P averages 4.2 out of 5 from 5 ratings, while Interval Voice Clock averages 4.0 from 2 ratings.

### Do Calculator++P or Interval Voice Clock have ads?

Neither Calculator++P nor Interval Voice Clock shows ads.

### Which is updated more often, Calculator++P or Interval Voice Clock?

Calculator++P ships an update every 3 months, and Interval Voice Clock every 2 weeks. Most recently, Calculator++P was updated on November 6, 2026 and Interval Voice Clock on November 4, 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.*