# Calculator++P vs Simple Ruler inch/cm

The clearest difference is review sentiment: Simple Ruler inch/cm at 100% against Calculator++P's 67%. Simple Ruler inch/cm also leads on update cadence (daily vs every 3 months) and price ($0.99 vs $2.99). Calculator++P's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.1). On ads, in-app purchases and monetization model there is nothing between them.

Calculator++P costs $2.99 and Simple Ruler inch/cm $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator++P ships an update every 3 months, Simple Ruler inch/cm daily. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Calculator++P | Simple Ruler inch/cm |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/calculator-plus-plus-p/id1072096140/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Paid | Paid |
| Size | 73 MB | 1 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YUTAKA KENJO](https://appshunter.io/developer/1070080613) | [Systemiko Inc.](https://appshunter.io/developer/680630947) |

## 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


### Simple Ruler inch/cm

[App page](https://appshunter.io/ios/app/simple-ruler-inchcm/id6479048575)

This utility transforms your iPhone into a precise on-screen ruler for measuring in inches and centimeters. It offers a simple interface for quick measurements, serving as a handy tool for various tasks.

**Highlights:** On-screen ruler, Inch measurement, Centimeter measurement, Simple interface, Accurate measurements

**In-app purchases:** none


## Frequently asked questions

### Is Calculator++P free?

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

### Is Simple Ruler inch/cm free?

Simple Ruler inch/cm costs $0.99, with no in-app purchases.

### Do Calculator++P or Simple Ruler inch/cm have ads?

Neither Calculator++P nor Simple Ruler inch/cm shows ads.

### Which is updated more often, Calculator++P or Simple Ruler inch/cm?

Calculator++P ships an update every 3 months, and Simple Ruler inch/cm daily. Most recently, Calculator++P was updated on November 6, 2026 and Simple Ruler inch/cm 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.*