# Rotator Smartlock vs NaruTango

The clearest difference is review sentiment: NaruTango at 100% against Rotator Smartlock's 0%. NaruTango also leads on update cadence (every 2 weeks vs every 5 weeks). Rotator Smartlock's advantage is in-app purchases (none vs 6) and iOS requirement (10.0 vs 13.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. NaruTango sells 6 one-off in-app purchases. Rotator Smartlock asks for nothing beyond the download.

Rotator Smartlock ships an update every 5 weeks, NaruTango every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Rotator Smartlock | NaruTango |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 62 MB | 642 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GLOBAL LOCK SYSTEMS](https://appshunter.io/developer/1565932994) | [Guangzhou Youtu Information Technology Co., Ltd.](https://appshunter.io/developer/1523128639) |

## What reviewers say

### Rotator Smartlock

[App page](https://appshunter.io/ios/app/rotator-smartlock/id1533067095)

Control your smart lock remotely with this app. Adjust lock settings, grant temporary access codes, and monitor user activity. Manage up to 40 users and schedule access for specific times.

**Highlights:** One-click direction adjustment, Set number of lock turns, Create one-time access codes, Adjustable motor speed, Automatic and delayed locking, Manage up to 40 users, Grant time-restricted access

**In-app purchases:** none


### NaruTango

[App page](https://appshunter.io/ios/app/narutango-learn-jlpt-words/id6742486695)

This app helps you memorize Japanese vocabulary for the JLPT exams (N1-N5) using flashcards. It offers pronunciation, customizable learning modes, and supports multiple devices for a seamless study experience.

**Highlights:** JLPT N1-N5 vocabulary lists, Flashcard learning with customizable display, High-quality real-person pronunciation, Gojūon (kana) learning, Cross-device data sharing

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JLPT N1 Word List | $6.99 | one-time |
| JLPT N3 Word List | $6.99 | one-time |
| JLPT N2 Word List | $6.99 | one-time |
| Kaoyan Word List | $8.99 | one-time |
| JLPT Word Lists | $14.99 | one-time |
| NaruTango Pro | $24.99 | one-time |


## Frequently asked questions

### Is Rotator Smartlock free?

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

### Is NaruTango free?

NaruTango is free to download, with in-app purchases available.

### Do Rotator Smartlock or NaruTango have ads?

Neither Rotator Smartlock nor NaruTango shows ads.

### Which is updated more often, Rotator Smartlock or NaruTango?

Rotator Smartlock ships an update every 5 weeks, and NaruTango every 2 weeks. Most recently, Rotator Smartlock was updated on October 24, 2026 and NaruTango on October 24, 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.*