# Smith Charts vs X Speed Reader

The clearest difference is price: X Speed Reader at Free against Smith Charts's $3.99. X Speed Reader also leads on update cadence (every 5 days vs every 3 weeks). Smith Charts's advantage is in-app purchases (none vs 3) and chart position (#196 vs unranked). On ads, device support and iOS requirement there is nothing between them.

X Speed Reader is free to download; Smith Charts costs $3.99 up front. X Speed Reader sells 3 in-app purchases, starting at $2.99 per month. Smith Charts asks for nothing beyond the download.

Smith Charts ships an update every 3 weeks, X Speed Reader every 5 days. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Smith Charts | X Speed Reader |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/smith-charts/id1602503719/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Paid | — |
| Best chart rank | **#196** | — |
| Size | 24 MB | 48 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Edoardo Orzes](https://appshunter.io/developer/1665361246) | [Oleksandr Kryzhanovskyi](https://appshunter.io/developer/1755912450) |

## What reviewers say

### Smith Charts

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

**Currently charting:** #196 Top Paid · Productivity (US App Store)

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


### X Speed Reader

[App page](https://appshunter.io/ios/app/x-speed-reader-rsvp-reader/id6758070169)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $7.99 | per year |
| Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Smith Charts free?

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

### Is X Speed Reader free?

X Speed Reader is free to download, with in-app purchases available.

### Do Smith Charts or X Speed Reader have ads?

Neither Smith Charts nor X Speed Reader shows ads.

### Which is updated more often, Smith Charts or X Speed Reader?

Smith Charts ships an update every 3 weeks, and X Speed Reader every 5 days. Most recently, Smith Charts was updated on October 8, 2026 and X Speed Reader on October 1, 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.*