# 30 CFR by LawStack vs SKC SmartWave

The clearest difference is review sentiment: 30 CFR by LawStack at 89% against SKC SmartWave's 0%. 30 CFR by LawStack also leads on update cadence (every 2 months vs every 18 months) and ratings volume (7 vs 1). SKC SmartWave's advantage is rating (5.0 vs 3.7) and in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 30 CFR by LawStack sells 2 one-off in-app purchases. SKC SmartWave asks for nothing beyond the download.

SKC SmartWave holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: 30 CFR by LawStack has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 89% of 30 CFR by LawStack's written reviews are positive against 0% of SKC SmartWave's, so the app with the better star average is not the one people write more warmly about.

30 CFR by LawStack ships an update every 2 months, SKC SmartWave every 18 months. The most recent releases landed on June 11, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 30 CFR by LawStack | SKC SmartWave |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (7 ratings)](https://appshunter.io/ios/app/30-cfr-by-lawstack/id325716756/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/skc-smartwave/id1453417531/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | **88.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 18 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 79 MB | 36 MB |
| Requires iOS | **9.0** | 10.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tekk Innovations LLC](https://appshunter.io/developer/320464672) | [SKC Inc.,](https://appshunter.io/developer/569246813) |

## What reviewers say

### 30 CFR by LawStack

[App page](https://appshunter.io/ios/app/30-cfr-by-lawstack/id325716756)

Access the complete Title 30 Code of Federal Regulations (CFR) for Mineral Resources offline. This app allows for bookmarking, highlighting, note-taking, and full-text searching. Share content easily with colleagues.

**Highlights:** Complete Title 30 CFR offline, Custom bookmarks, highlighting, and notes, Full-text and advanced search, Email and share content, Includes all tables and images, Free trial

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 CFR - 3 Months | $14.99 | one-time |
| 30 CFR - 1 Year | $99.99 | one-time |


### SKC SmartWave

[App page](https://appshunter.io/ios/app/skc-smartwave/id1453417531)

Monitor and control SKC Air Sample Pumps remotely via Bluetooth. View real-time status, adjust sampling parameters, and manage pump operations. Secure your devices with a lock feature.

**Highlights:** Bluetooth pump detection, Real-time status monitoring, Adjust sampling parameters, Start/stop/pause pump runs, Pump naming, Secure Lock feature

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 30 CFR by LawStack free?

30 CFR by LawStack is free to download, with in-app purchases available.

### Is SKC SmartWave free?

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

### Which has better reviews, 30 CFR by LawStack or SKC SmartWave?

SKC SmartWave is rated higher. 30 CFR by LawStack averages 3.7 out of 5 from 7 ratings, while SKC SmartWave averages 5.0 from 1 ratings.

### Do 30 CFR by LawStack or SKC SmartWave have ads?

Neither 30 CFR by LawStack nor SKC SmartWave shows ads.

### Which is updated more often, 30 CFR by LawStack or SKC SmartWave?

30 CFR by LawStack ships an update every 2 months, and SKC SmartWave every 18 months. Most recently, 30 CFR by LawStack was updated on June 11, 2026 and SKC SmartWave on September 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*