# Ultrasonic Repeller vs Shutter Safe

The clearest difference is price: Shutter Safe at Free against Ultrasonic Repeller's $0.59. Shutter Safe also leads on rating (5.0 vs 3.6) and update cadence (every 4 weeks vs every 2 months). Ultrasonic Repeller's advantage is ratings volume (51 vs 1) and iOS requirement (16.1 vs 27.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

Shutter Safe is free to download; Ultrasonic Repeller costs $0.59 up front. Neither carries in-app purchases, so what you see is what you pay.

Shutter Safe holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Ultrasonic Repeller has 51 ratings behind it against 1, so its average is the more settled of the two.

Ultrasonic Repeller ships an update every 2 months, Shutter Safe every 4 weeks. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Ultrasonic Repeller | Shutter Safe |
| --- | --- | --- |
| Price | $0.59 | **Free** |
| Rating | [3.6 (51 ratings)](https://appshunter.io/ios/app/ultrasonic-repeller/id445318668/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shutter-safe/id6751868798/reviews)** |
| Number of ratings | **51** | 1 |
| Positive reviews | 43.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 2 MB | 5 MB |
| Requires iOS | **16.1** | 27.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandr Balyberdin](https://appshunter.io/developer/336185043) | [Calvin Fraites](https://appshunter.io/developer/1802751239) |

## What reviewers say

### Ultrasonic Repeller

[App page](https://appshunter.io/ios/app/ultrasonic-repeller/id445318668)

This app uses ultrasound technology to create a protective barrier against insects, rodents, and aggressive dogs. It also offers features for personal space and experimental bat deterrence, with advanced controls and Apple Watch integration.

**Highlights:** Insect repellent, Rodent deterrent, Dog deterrent, Personal space protector, Apple Watch support, High-precision frequency generator, Background mode

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✅ Effective on mosquitoes and insects
- ✅ Works on rodents when volume is high
- ✅ Free app with no cost
- ✅ Simple and intuitive interface
- ✅ Multiple pest settings available

**What reviewers complain about**

- ❌ Inconsistent effectiveness across different pests
- ❌ Doesn't work on dogs or older animals
- ❌ Requires high volume to be effective
- ❌ Limited range of effectiveness
- ❌ Effectiveness diminishes over time as pests adapt

**Reported bugs**

- App crashes on startup (multiple iOS versions)
- Incompatible with iOS 8 and older versions
- App force closes when screen is locked
- Crashes on iPhone 6s and later models
- No sound output on iPad 1

**Requested features**

- Add cat repeller mode
- Add bat repeller mode
- Add ant repeller mode
- Add fly repeller mode
- Add snake repeller mode


### Shutter Safe

[App page](https://appshunter.io/ios/app/shutter-safe/id6751868798)

This app helps photographers catalog and manage their camera gear. Securely store details like make, model, and serial numbers for all your equipment. Keep a reliable record of your cameras, lenses, and accessories for insurance and safekeeping.

**Highlights:** Catalog gear with make, model, and type, Save serial numbers for insurance, Organize cameras, lenses, and accessories, Quickly search and update collection, Lightweight, fast, and intuitive design

**In-app purchases:** none


## Frequently asked questions

### Is Ultrasonic Repeller free?

Ultrasonic Repeller costs $0.59, with no in-app purchases.

### Is Shutter Safe free?

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

### Which has better reviews, Ultrasonic Repeller or Shutter Safe?

Shutter Safe is rated higher. Ultrasonic Repeller averages 3.6 out of 5 from 51 ratings, while Shutter Safe averages 5.0 from 1 ratings.

### Do Ultrasonic Repeller or Shutter Safe have ads?

Neither Ultrasonic Repeller nor Shutter Safe shows ads.

### Which is updated more often, Ultrasonic Repeller or Shutter Safe?

Ultrasonic Repeller ships an update every 2 months, and Shutter Safe every 4 weeks. Most recently, Ultrasonic Repeller was updated on October 18, 2026 and Shutter Safe on October 11, 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.*