Ultrasonic Repeller vs ChronStop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultrasonic Repeller
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.
- Insect repellent
- Rodent deterrent
- Dog deterrent
- Personal space protector
- Apple Watch support
- High-precision frequency generator
- Background mode
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Discover the power of ultrasound technology right in your pocket! Ultrasonic Repeller is a revolutionary app that transforms your iPhone into the ultimate protection device against a wide range of unwanted encounters. Key Features: Insect Repellent: Say goodbye to pesky mosquitoes and other bothersome insects. Rodent Deterrent: Keep mice and rats at bay with powerful ultrasonic frequencies. Dog Deterrent: Safely discourage aggressive dogs without harm. Personal Space Protector: Maintain your personal bubble in crowded spaces. Experimental Bat Repellent Mode: Test our cutting-edge technology designed to deter flying mammals. Advanced Functionality: EXCLUSIVE! Apple Watch Support: Take your protection to the next level with our Apple Watch app, allowing for quick and discreet activation right from your wrist! NEW! High-Precision Frequency Generator: Fine-tune your deterrent signals with our advanced, newly implemented frequency control system. Background Mode: Continuous protection even when your phone is locked. Live Activity Support: Quick access to controls from your lock screen. Dynamic Island Integration: Seamless monitoring on compatible iPhone models. Ultrasonic Repeller is incredibly user-friendly and absolutely ad-free! No need to invest in expensive hardware devices. Your iPhone, combined with our app, provides all the protection you need. Experience the future of personal safety and pest control. Download Ultrasonic Repeller now and take control of your environment!
ChronStop
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An alternative stopwatch for your Watch and Phone. Each watch update I've hoped to see new options and features for the stopwatch features native stopwatch app. I got tired of waiting and had to write my own! This app shows you your current lap time so you don't have to calculate it in your head. It also allows you to keep track of stop time (paused time). And it allows you to adjust the time of a lap or delete one if you fat fingered something! Now it also has a companion phone app.
Screenshots
Verdict
The clearest difference is price: ChronStop at Free against Ultrasonic Repeller's $0.59. Ultrasonic Repeller's advantage is iOS requirement (16.1 vs 26.5). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ChronStop is free to download; Ultrasonic Repeller costs $0.59 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Ultrasonic Repeller | ChronStop |
|---|---|---|
| Price | $0.59 | Free — better |
| Rating | 3.6 (51 ratings) — better | — |
| Positive reviews | 43.6% of reviews | — |
| Number of ratings | 51 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.1 — better | 26.5 |
| Further details — not scored | ||
| Size | 2 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandr Balyberdin | Jeff Garvens |
Bugs and requests
Ultrasonic Repeller
Reported bugs
9 issues- 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
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- App doesn't open or loads to grey screen
- Volume controls not accessible in app
- Flickers and immediately closes
- Compatibility issues with various iOS versions
Requested features
10 requests- Add cat repeller mode
- Add bat repeller mode
- Add ant repeller mode
- Add fly repeller mode
- Add snake repeller mode
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- Background operation when screen locked
- Better volume control interface
- External speaker integration
- Continuous operation mode
- User instructions and support documentation
ChronStop
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ultrasonic Repeller
No in-app purchases
ChronStop
No in-app purchases
Questions
Is Ultrasonic Repeller free?
Is ChronStop free?
Do Ultrasonic Repeller or ChronStop have ads?
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