# deviceOwl vs ImpromptuPost

The clearest difference is in-app purchases: ImpromptuPost at none against deviceOwl's 1. ImpromptuPost also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

deviceOwl ships an update every 2 months, ImpromptuPost every 3 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | deviceOwl | ImpromptuPost |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (539 ratings)](https://appshunter.io/ios/app/deviceowl-find-spy-devices/id1484893288/reviews)** | — |
| Number of ratings | **539** | — |
| Positive reviews | 49.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 61 MB | 64 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Entropic, LLC](https://appshunter.io/developer/1127939476) | [ImpromptuPost LLC](https://appshunter.io/developer/1702194938) |

## What reviewers say

### 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


### ImpromptuPost

[App page](https://appshunter.io/ios/app/impromptupost/id6460935394)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is deviceOwl free?

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

### Is ImpromptuPost free?

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

### Do deviceOwl or ImpromptuPost have ads?

Neither deviceOwl nor ImpromptuPost shows ads.

### Which is updated more often, deviceOwl or ImpromptuPost?

deviceOwl ships an update every 2 months, and ImpromptuPost every 3 weeks. Most recently, deviceOwl was updated on November 3, 2026 and ImpromptuPost on October 27, 2026.

---

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