# SMS Alert vs VSim

The clearest difference is review sentiment: VSim at 84% against SMS Alert's 0%. VSim also leads on rating (4.7 vs 4.0) and update cadence (every 2 months vs every 14 months). SMS Alert's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. VSim sells 6 one-off in-app purchases. SMS Alert asks for nothing beyond the download.

VSim holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: VSim has 16K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of SMS Alert's written reviews are positive against 84% of VSim's.

SMS Alert ships an update every 14 months, VSim every 2 months. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | SMS Alert | VSim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sms-alert/id1100172188/reviews) | **[4.7 (16K ratings)](https://appshunter.io/ios/app/vsim-sms-verification-code/id1661720255/reviews)** |
| Number of ratings | 2 | **16K** |
| Positive reviews | 0.0% of reviews | **84.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 46 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [朝山 马](https://appshunter.io/developer/596304901) | [Elmond](https://appshunter.io/developer/1837068464) |

## What reviewers say

### SMS Alert

[App page](https://appshunter.io/ios/app/sms-alert/id1100172188)

This app monitors temperature, humidity, analog signals, and power status for various devices. It sends alerts via SMS and phone calls when predefined limits are reached. Users can also query device status via text and schedule periodic reports.

**Highlights:** Temperature and humidity monitoring, Analog signal monitoring (4-20mA, 0-5V), Power monitoring (single/three-phase), SMS and phone call alerts, Remote status query via text, Scheduled status reporting, Modbus RTU/TCP cloud platform support

**Features:** macOS Compatibility

**In-app purchases:** none


### VSim

[App page](https://appshunter.io/ios/app/vsim-sms-verification-code/id1661720255)

Get a temporary virtual phone number to receive SMS verification codes without revealing your personal number. Activate accounts quickly and maintain privacy from unwanted spam. All messages are conveniently stored within the app.

**Highlights:** Receive SMS verification codes, Virtual numbers for account activation, In-app message inbox, Privacy protection, Pay-as-you-go credits, Supports popular platforms

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Credit | $0.99 | one-time |
| 30 Credit | $2.99 | one-time |
| 50 Credit | $4.99 | one-time |
| 100 Credit | $9.99 | one-time |
| 250 Credit | $24.99 | one-time |
| 500 credit | $49.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient
- 👍 User-friendly
- 💡 Innovative features
- 🔒 Secure and reliable
- 🤝 Great customer support

**What reviewers complain about**

- 🐛 Bugs and glitches
- 💰 Expensive pricing
- 📵 Numbers not working as expected
- 🚫 Banned/blocked numbers

**Reported bugs**

- Verification codes not received
- Numbers already in use
- Account bans without explanation

**Requested features**

- Ability to earn free credits
- More number options
- Improved privacy policy
- Better FAQ and community support


## Frequently asked questions

### Is SMS Alert free?

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

### Is VSim free?

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

### Which has better reviews, SMS Alert or VSim?

VSim is rated higher. SMS Alert averages 4.0 out of 5 from 2 ratings, while VSim averages 4.7 from 16K ratings.

### Do SMS Alert or VSim have ads?

VSim shows ads; SMS Alert does not.

### Which is updated more often, SMS Alert or VSim?

SMS Alert ships an update every 14 months, and VSim every 2 months. Most recently, SMS Alert was updated on October 5, 2026 and VSim on October 18, 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.*