# Smart FM+ vs deviceOwl

The clearest difference is rating: deviceOwl at 4.3 against Smart FM+'s 2.3. deviceOwl also leads on ratings volume (539 vs 15). Smart FM+'s advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. deviceOwl sells 1 in-app purchase, starting at $9.99 per year. Smart FM+ asks for nothing beyond the download.

deviceOwl holds the better App Store score, 4.3 against 2.3. That said, the two scores are not equally well evidenced: deviceOwl has 539 ratings behind it against 15, so its average is the more settled of the two. Written reviews split almost evenly too, at 50% and 49% positive.

Smart FM+ ships an update every 3 weeks, deviceOwl every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Smart FM+ | deviceOwl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (15 ratings)](https://appshunter.io/ios/app/smart-fm-plus/id1476802817/reviews) | **[4.3 (539 ratings)](https://appshunter.io/ios/app/deviceowl-find-spy-devices/id1484893288/reviews)** |
| Number of ratings | 15 | **539** |
| Positive reviews | **50.0% of reviews** | 49.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Freemium |
| Size | 17 MB | 61 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [桂标 曾](https://appshunter.io/developer/985954900) | [Entropic, LLC](https://appshunter.io/developer/1127939476) |

## What reviewers say

### Smart FM+

[App page](https://appshunter.io/ios/app/smart-fm-plus/id1476802817)

This app helps you locate your parked car using your phone's location and Bluetooth connectivity. It also monitors your car's battery voltage and provides historical data. Simply plug in the transmitter, connect via Bluetooth, and set your car radio to a matching FM frequency.

**Highlights:** Car-seeking positioning, Voltage detection, FM frequency settings, Bluetooth connectivity, Parking location recording, Map navigation to car

**In-app purchases:** none


### deviceOwl

[App page](https://appshunter.io/ios/app/deviceowl-find-spy-devices/id1484893288)

This app uses AI to identify household and covert spy devices by simply pointing your smartphone at them. It reveals device capabilities, privacy implications, and manufacturer details to help you protect your privacy.

**Highlights:** AI device identification, Privacy implications revealed, Device capabilities details, Manufacturer information, Offline device checking, Basic and Advanced Editions

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Advanced Subscription | $9.99 | per year |

**What reviewers like**

- 🚀 Accurate detection
- 👍 Useful for travel and public places
- 🔒 Helps protect privacy
- 💡 Innovative concept

**What reviewers complain about**

- 🐛 Inconsistent performance
- 💰 Expensive subscription
- 🤔 Limited device recognition
- 📱 Compatibility issues

**Reported bugs**

- Frequent crashes and freezes
- Unreliable device detection
- Subscription management problems
- Unresponsive customer support

**Requested features**

- Free trial period for premium features
- Expanded device database
- Improved user interface
- Seamless integration with other security apps


## Frequently asked questions

### Is Smart FM+ free?

Smart FM+ is free to download, with no in-app purchases.

### Is deviceOwl free?

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

### Which has better reviews, Smart FM+ or deviceOwl?

deviceOwl is rated higher. Smart FM+ averages 2.3 out of 5 from 15 ratings, while deviceOwl averages 4.3 from 539 ratings.

### Do Smart FM+ or deviceOwl have ads?

Neither Smart FM+ nor deviceOwl shows ads.

### Which is updated more often, Smart FM+ or deviceOwl?

Smart FM+ ships an update every 3 weeks, and deviceOwl every 2 months. Most recently, Smart FM+ was updated on November 3, 2026 and deviceOwl on November 3, 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.*