# SISTER 進發 vs SentryGuard

The clearest difference is update cadence: SentryGuard at fortnightly against SISTER 進發's every 5 weeks. SISTER 進發's advantage is iOS requirement (13.0 vs 15.1). 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.

SISTER 進發 ships an update every 5 weeks, SentryGuard fortnightly. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SISTER 進發 | SentryGuard |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 87.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 18 MB | 36 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GT MARKET CONSULTING CO., LTD.](https://appshunter.io/developer/927846054) | [Benjamin Barghoud](https://appshunter.io/developer/6779729862) |

## What reviewers say

### SISTER 進發

[App page](https://appshunter.io/ios/app/sister/id1198930609)

**Features:** macOS Compatibility

**In-app purchases:** none


### SentryGuard

[App page](https://appshunter.io/ios/app/sentryguard/id6779729590)

This app enhances your Tesla's security by providing instant alerts for intrusion attempts and automatically activating Sentry Mode recording. It also offers remote deterrence features and a detailed event history, all while respecting user privacy.

**Highlights:** Auto Sentry Mode recording, Real-time push and Telegram alerts, Remote horn and Boombox deterrence, Zero battery drain telemetry, Virtual key pairing for commands, Detailed alert history, Simplified Sentry Mode control

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

**In-app purchases:** none


## Frequently asked questions

### Is SISTER 進發 free?

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

### Is SentryGuard free?

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

### Do SISTER 進發 or SentryGuard have ads?

Neither SISTER 進發 nor SentryGuard shows ads.

### Which is updated more often, SISTER 進發 or SentryGuard?

SISTER 進發 ships an update every 5 weeks, and SentryGuard fortnightly. Most recently, SISTER 進發 was updated on October 11, 2026 and SentryGuard on October 10, 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.*