# Smart Vibration Meter・Detector vs SoloPro Invoice

The clearest difference is rating: SoloPro Invoice at 5.0 against Smart Vibration Meter・Detector's 4.1. SoloPro Invoice also leads on in-app purchases (none vs 17) and ads (none vs shown). Smart Vibration Meter・Detector's advantage is ratings volume (27 vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Smart Vibration Meter・Detector sells 17 in-app purchases, starting at $0.99 per 7 days. SoloPro Invoice asks for nothing beyond the download.

SoloPro Invoice holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Smart Vibration Meter・Detector has 27 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Smart Vibration Meter・Detector | SoloPro Invoice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (27 ratings)](https://appshunter.io/ios/app/smart-vibration-meterdetector/id1121590218/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solopro-invoice/id6758626018/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 79 MB | 34 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [PRADEEP MISHRA](https://appshunter.io/developer/1874026680) |

## What reviewers say

### Smart Vibration Meter・Detector

[App page](https://appshunter.io/ios/app/smart-vibration-meterdetector/id1121590218)

This utility app transforms your phone into a seismograph to measure vibrations and detect earthquakes. It displays readings on both the Richter and Mercalli scales, offering insights into seismic activity.

**Highlights:** Measures vibration using phone sensors, Displays readings on Richter scale, Displays readings on Mercalli intensity scale, Acts as a seismic detector, Calibration feature for accuracy, Classifies seismic activity effects

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

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $0.99 | per 7 days |
| Unlimited access | $1.99 | per 7 days |
| Unlimited access | $2.99 | per 7 days |
| Unlimited access | $3.99 | per 7 days |
| Unlock premuium features | $4.99 | per 7 days |
| Unlock premuium features | $5.99 | per 7 days |
| Unlock premuium features | $6.99 | per 7 days |
| Unlock premuium features | $7.99 | per 7 days |
| Unlock premuium features | $8.99 | per 7 days |
| Unlock premuium features | $9.99 | per year |
| Unlimited access | $19.99 | per year |
| Unlock premuium features | $19.99 | per month |
| Unlimited access | $29.99 | per year |
| Unlock premuium features | $29.99 | per month |
| Unlimited access | $39.99 | per year |
| Unlimited access | $49.99 | per year |
| Ads-Free | $0.99 | one-time |


### SoloPro Invoice

[App page](https://appshunter.io/ios/app/solopro-invoice/id6758626018)

Create professional invoices and quotes quickly from your phone. Organize client details, track job history, and share polished PDFs. Designed for tradespeople and freelancers to reduce administrative time.

**Highlights:** Professional invoice and quote creation, Client and job management, PDF generation and sharing, Price catalog for services, Smart total calculations, Real-time sync with offline support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Vibration Meter・Detector free?

Smart Vibration Meter・Detector is free to download, with in-app purchases available.

### Is SoloPro Invoice free?

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

### Which has better reviews, Smart Vibration Meter・Detector or SoloPro Invoice?

SoloPro Invoice is rated higher. Smart Vibration Meter・Detector averages 4.1 out of 5 from 27 ratings, while SoloPro Invoice averages 5.0 from 1 ratings.

### Do Smart Vibration Meter・Detector or SoloPro Invoice have ads?

Smart Vibration Meter・Detector shows ads; SoloPro Invoice does not.

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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.*