# Dog Repeller LITE vs SignSync

The clearest difference is ads: SignSync at none against Dog Repeller LITE's shown. SignSync also leads on update cadence (every 11 days vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dog Repeller LITE ships an update every 4 months, SignSync every 11 days. The most recent releases landed on September 23, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Dog Repeller LITE | SignSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (11 ratings)](https://appshunter.io/ios/app/dog-repeller-lite/id465932559/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 21.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 11 days** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 36 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TiAu Engineering UG haftungsbeschraenkt](https://appshunter.io/developer/384087141) | [Coding Minds, Inc.](https://appshunter.io/developer/1480612283) |

## What reviewers say

### Dog Repeller LITE

[App page](https://appshunter.io/ios/app/dog-repeller-lite/id465932559)

Deter aggressive dogs using a high-frequency ultrasonic sound undetectable by humans. Ideal for cyclists, walkers, and joggers, this app provides a safe way to protect yourself from stray or vicious animals without causing them harm. Features adjustable frequency for optimal effectiveness.

**Highlights:** Ultrasonic sound emission, Adjustable frequency, Human-inaudible sound, Dog deterrence, Personal safety tool

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

**In-app purchases:** none


### SignSync

[App page](https://appshunter.io/ios/app/signsync/id6572281582)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dog Repeller LITE free?

Dog Repeller LITE is free to download, with no in-app purchases.

### Is SignSync free?

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

### Do Dog Repeller LITE or SignSync have ads?

Dog Repeller LITE shows ads; SignSync does not.

### Which is updated more often, Dog Repeller LITE or SignSync?

Dog Repeller LITE ships an update every 4 months, and SignSync every 11 days. Most recently, Dog Repeller LITE was updated on September 23, 2026 and SignSync on May 17, 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.*