# Joylog vs Luckysmart Sonar

The clearest difference is update cadence: Joylog at every 4 months against Luckysmart Sonar's every 15 months. Joylog also leads on iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Joylog ships an update every 4 months, Luckysmart Sonar every 15 months. The most recent releases landed on June 1, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Joylog | Luckysmart Sonar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/joylog/id1457651013/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 15 months |
| Monetization | Free | — |
| Size | 14 MB | 51 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joylog Tech Co.,Ltd](https://appshunter.io/developer/1457651012) | [天喜 胡](https://appshunter.io/developer/1535746096) |

## What reviewers say

### Joylog

[App page](https://appshunter.io/ios/app/joylog/id1457651013)

This app uses a smart sonar system to detect fish location, size, and depth up to 40 meters underwater. It also provides real-time information on underwater topography, water depth, and temperature, displayed on your mobile device.

**Highlights:** High-precision miniature sonar system, Detects fish location, size, and depth, Underwater topographic map generation, Real-time water depth and temperature, Mobile app integration for live data

**Features:** macOS Compatibility

**In-app purchases:** none


### Luckysmart Sonar

[App page](https://appshunter.io/ios/app/luckysmart-sonar/id1564200878)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Joylog free?

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

### Is Luckysmart Sonar free?

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

### Do Joylog or Luckysmart Sonar have ads?

Neither Joylog nor Luckysmart Sonar shows ads.

### Which is updated more often, Joylog or Luckysmart Sonar?

Joylog ships an update every 4 months, and Luckysmart Sonar every 15 months. Most recently, Joylog was updated on June 1, 2026 and Luckysmart Sonar on June 5, 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.*