# IP Keypad Pro vs Smith Charts

The clearest difference is rating: IP Keypad Pro at 4.7 against Smith Charts's 3.7. IP Keypad Pro also leads on review sentiment (75% vs 50%) and ratings volume (31 vs 3). Smith Charts's advantage is update cadence (every 3 weeks vs every 2 months) and device support (3 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

IP Keypad Pro costs $1.99 and Smith Charts $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IP Keypad Pro holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: IP Keypad Pro has 31 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 75% of IP Keypad Pro's written reviews are positive against 50% of Smith Charts's.

IP Keypad Pro ships an update every 2 months, Smith Charts every 3 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | IP Keypad Pro | Smith Charts |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | **[4.7 (31 ratings)](https://appshunter.io/ios/app/ip-keypad-pro-subnet-calc/id503779744/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/smith-charts/id1602503719/reviews) |
| Number of ratings | **31** | 3 |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 1 MB | 24 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Furuya](https://appshunter.io/developer/503779747) | [Edoardo Orzes](https://appshunter.io/developer/1665361246) |

## What reviewers say

### IP Keypad Pro

[App page](https://appshunter.io/ios/app/ip-keypad-pro-subnet-calc/id503779744)

This application simplifies network calculations with a dedicated keypad and intuitive pickers for subnet masks and prefix lengths. It calculates essential network addresses and offers features like clipboard copying and binary digit viewing for enhanced usability.

**Highlights:** Dedicated keypad for input, Subnet mask and prefix length pickers, Network, host, and broadcast address calculation, Copy to clipboard functionality, Binary digit view, Input history

**In-app purchases:** none


### Smith Charts

[App page](https://appshunter.io/ios/app/smith-charts/id1602503719)

Design matching networks, analyze device parameters, and compute stability circles with this interactive tool. Supports S parameters, various components, and offers advanced engineering features for RF design. Available in dark mode and exportable to PDF.

**Highlights:** Interactive Smith chart with drag and zoom, Design matching networks with various components, Compute stability, equi gain, and noise circles, Import S parameters from Touchstone files, Export designs to PDF, image, or file, Dark mode support, Ruler for wavelength measurement

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

**In-app purchases:** none


## Frequently asked questions

### Is IP Keypad Pro free?

IP Keypad Pro costs $1.99, with no in-app purchases.

### Is Smith Charts free?

Smith Charts costs $3.99, with no in-app purchases.

### Which has better reviews, IP Keypad Pro or Smith Charts?

IP Keypad Pro is rated higher. IP Keypad Pro averages 4.7 out of 5 from 31 ratings, while Smith Charts averages 3.7 from 3 ratings.

### Do IP Keypad Pro or Smith Charts have ads?

Neither IP Keypad Pro nor Smith Charts shows ads.

### Which is updated more often, IP Keypad Pro or Smith Charts?

IP Keypad Pro ships an update every 2 months, and Smith Charts every 3 weeks. Most recently, IP Keypad Pro was updated on November 1, 2026 and Smith Charts on November 7, 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.*