# Smart Tools Pro vs Seismometer ∞

The clearest difference is price: Seismometer ∞ at Free against Smart Tools Pro's $0.99. Seismometer ∞ also leads on update cadence (every 2 weeks vs every 5 months). Smart Tools Pro's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Seismometer ∞ is free to download; Smart Tools Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Smart Tools Pro ships an update every 5 months, Seismometer ∞ every 2 weeks. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Smart Tools Pro | Seismometer ∞ |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.3 (8 ratings)](https://appshunter.io/ios/app/smart-tools-pro-smarttools/id762552951/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 11 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shajir Kalady](https://appshunter.io/developer/1673992247) | [辰巳家有限公司](https://appshunter.io/developer/1781943256) |

## What reviewers say

### Smart Tools Pro

[App page](https://appshunter.io/ios/app/smart-tools-pro-smarttools/id762552951)

Transform your iPhone into a professional measurement and utility toolkit with 30 powerful tools. Measure objects, angles, and distances with precision, or use utility functions like a flashlight, compass, and QR code scanner.

**Highlights:** Ruler and protractor for precise measurements, AR-based distance and height measurement, Real-time GPS speedometer, Digital compass and spirit level, QR code scanner and generator, Magnifier and flashlight, Audio analyzer and seismograph

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

**In-app purchases:** none


### Seismometer ∞

[App page](https://appshunter.io/ios/app/seismometer/id6761700650)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Tools Pro free?

Smart Tools Pro costs $0.99, with no in-app purchases.

### Is Seismometer ∞ free?

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

### Do Smart Tools Pro or Seismometer ∞ have ads?

Seismometer ∞ shows ads; Smart Tools Pro does not.

### Which is updated more often, Smart Tools Pro or Seismometer ∞?

Smart Tools Pro ships an update every 5 months, and Seismometer ∞ every 2 weeks. Most recently, Smart Tools Pro was updated on October 8, 2026 and Seismometer ∞ on September 30, 2026.

---

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