# SM vs RFCReaderPlus

The clearest difference is in-app purchases: SM at none against RFCReaderPlus's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RFCReaderPlus sells 1 one-off in-app purchase. SM asks for nothing beyond the download.

SM ships an update every 2 months, RFCReaderPlus every 3 months. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SM | RFCReaderPlus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 105 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maksim Korshunov](https://appshunter.io/developer/1541129680) | [飞 龙](https://appshunter.io/developer/965611281) |

## What reviewers say

### SM

[App page](https://appshunter.io/ios/app/sm-locator/id1541129678)

**Features:** macOS Compatibility

**In-app purchases:** none


### RFCReaderPlus

[App page](https://appshunter.io/ios/app/rfcreaderplus/id1573574247)

Access and read technical internet standards documents offline. Features include searching, bookmarking, text formatting, and navigation aids for various document formats.

**Highlights:** List all RFC documents, Search RFC by keywords or number, Add RFCs to favorites, Text formatting and styling, Offline RFC reading, Support for PDF and HTML formats

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Functional Version | $1.99 | one-time |


## Frequently asked questions

### Is SM free?

SM is free to download, with no in-app purchases.

### Is RFCReaderPlus free?

RFCReaderPlus is free to download, with in-app purchases available.

### Do SM or RFCReaderPlus have ads?

Neither SM nor RFCReaderPlus shows ads.

### Which is updated more often, SM or RFCReaderPlus?

SM ships an update every 2 months, and RFCReaderPlus every 3 months. Most recently, SM was updated on October 5, 2026 and RFCReaderPlus on October 14, 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.*