S4_control vs SimDock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S4_control
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在这里你可以连接上音箱,里面有许多功能,比如音乐,麦克风,吉他音量都是可以调节的。在个别界面还有均衡功能,也还有见红音效,高中低音等。 让你无须接触蓝牙音箱,在一定距离内就可以控制音箱了。
SimDock
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SimDock helps you organize SIM card assets, track expiration dates, and securely view important messages across your own devices. KEY FEATURES • SIM card asset management: Manually enter ICCID, phone number, carrier, country or region, purpose, and notes. • Expiration reminders: Record activation and expiration dates, renewal cycles, and reminder preferences. • Multi-device sync: View SMS, app notifications, and call records synchronized from source devices you authorize. • End-to-end protection: New message titles and bodies are encrypted on the message-source device using AES-256-GCM. Content keys remain in secure storage on your devices. • Device management: View connected devices, online status, recent activity, and synchronization status. • Account security: Email verification, anti-bot login checks, password recovery, recovery keys, and permanent account deletion. PRIVACY AND PERMISSIONS Message collection is off by default and requires explicit permission for each capability. Devices used only to view synchronized data do not collect local SMS, notifications, or call records. SimDock does not read historical SMS. ICCID is always entered manually. SimDock does not provide eSIM downloads, switching, activation, LPA, APDU, or carrier services.
Screenshots
Verdict
The clearest difference is iOS requirement: S4_control at 9.0 against SimDock's 15.6. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | S4_control | SimDock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 108 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | GUANDDONG TIANPU TECHNOLOGY GROUP CO.,LTD. | 上海英纵网络科技有限公司 |
In-app purchases
S4_control
No in-app purchases
SimDock
No in-app purchases









