KeyPlus3 vs MotionSeer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyPlus3
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Special Key KeyPlus provides customers with a unique experience. Creating a world where you can easily control and share car doors with just one phone, enabling a special life. The one thing that turns my car into a smart car is Special Key KeyPlus. YouTube Introduction Video: https://www.youtube.com/watch?v=rcryNcxolg8&t=2s Company Website: http://smartkeyplus.com/ Blog: https://blog.naver.com/sokeyplus
MotionSeer
Transform your iPhone into a private security camera with advanced motion and sound detection. Receive instant alerts and access live video streams securely from anywhere. Local and cloud recording options ensure your footage is always safe.
- Advanced motion and sound detection
- Instant alerts and recording
- 14 days free local recording
- Automatic cloud backup
- Secure live streaming
- Privacy-focused local storage
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MotionSeer is a simple, private, and powerful security camera app that requires no signup, no login, and no complicated pairing. Just place your iPhone and start monitoring instantly. Watch live video from anywhere in the world through a secure private link. No need to install on a second phone. Key Features: • Advanced motion, sound, and device-movement detection • Instant alerts when motion is detected and recording started • 14 days of local recording retention included for free • Automatic cloud backup to Google Drive and iCloud Drive • Secure live streaming (pro) • Automatic overwrite of old recordings when space is low • Alerts when device storage is getting full or battery level low The app is built from the ground up with battery life and CPU efficiency in mind. Every design decision prioritizes doing more with less, so your device stays reliable when it matters most. Your recordings belong to you — stored locally on your iPhone or uploaded directly to your own iCloud or Google Drive accounts. There are no intermediate servers, no third-party databases, and no one else with access. Perfect for protecting motorcycles, cars, garages, homes, and valuables — as well as baby monitoring, elderly care, pet watching. Your evidence stays safe even if the device is lost or damaged — recordings are automatically backed up to your cloud storage (Pro). Download now and enjoy reliable private monitoring with peace of mind. Privacy Policy: https://motionseer.com/privacy Terms of Use: https://motionseer.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: KeyPlus3 at none against MotionSeer's 2. MotionSeer's advantage is update cadence (every 10 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. MotionSeer sells 2 in-app purchases, starting at $5.99 per month. KeyPlus3 asks for nothing beyond the download.
KeyPlus3 ships an update every 3 weeks, MotionSeer every 10 days. The most recent releases landed on September 8, 2026 and September 16, 2026 respectively.
| Parameter | KeyPlus3 | MotionSeer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 30 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Special One Co., Ltd. | HARDI SOSNITSKI |
In-app purchases
KeyPlus3
No in-app purchases
MotionSeer
- Pro1 Month trial$5.991 Month
- Pro7 Days trial$34.991 Year









