# SDJ vs Traiden

The clearest difference is update cadence: SDJ at fortnightly against Traiden's every 23 months. SDJ also leads on iOS requirement (9.0 vs 12.0). Traiden's advantage is review sentiment (32% vs 11%) and ratings volume (42 vs 5). On price, rating, ads and in-app purchases there is nothing between them.

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

Traiden holds the better App Store score, 3.6 against 3.4. That said, the two scores are not equally well evidenced: Traiden has 42 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 11% of SDJ's written reviews are positive against 32% of Traiden's.

SDJ ships an update fortnightly, Traiden every 23 months. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SDJ | Traiden |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/sdj/id1500362834/reviews) | **[3.6 (42 ratings)](https://appshunter.io/ios/app/traiden/id1549788143/reviews)** |
| Number of ratings | 5 | **42** |
| Positive reviews | 11.1% of reviews | **31.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 23 months |
| Monetization | Free | Free |
| Size | 49 MB | 175 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tianlang innovation Technology (Shenzhen) Co.,Ltd.](https://appshunter.io/developer/1383171492) | [Miguel Michel](https://appshunter.io/developer/1549788145) |

## What reviewers say

### SDJ

[App page](https://appshunter.io/ios/app/sdj/id1500362834)

This smart sweeping robot offers integrated dust collection, sweeping, and mopping functions for smooth, flat surfaces. It operates quietly, providing efficient, hands-free cleaning with long battery life to create a comfortable living space.

**Highlights:** Intelligent electric universal driving, Dust collection, Sweeping, Mopping, Low noise operation, Long endurance

**Features:** macOS Compatibility

**In-app purchases:** none


### Traiden

[App page](https://appshunter.io/ios/app/traiden/id1549788143)

Control your air conditioning remotely from anywhere using your smartphone. Share device access with family members and manage multiple units simultaneously. Schedule operations with timers and utilize various pre-set modes for convenience.

**Highlights:** Remote AC control, Device sharing, Multi-device management, Timer scheduling, Multiple operating modes

**In-app purchases:** none


## Frequently asked questions

### Is SDJ free?

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

### Is Traiden free?

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

### Which has better reviews, SDJ or Traiden?

Traiden is rated higher. SDJ averages 3.4 out of 5 from 5 ratings, while Traiden averages 3.6 from 42 ratings.

### Do SDJ or Traiden have ads?

Neither SDJ nor Traiden shows ads.

### Which is updated more often, SDJ or Traiden?

SDJ ships an update fortnightly, and Traiden every 23 months. Most recently, SDJ was updated on October 8, 2026 and Traiden on October 14, 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.*