YI Home vs MathBell
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
YI Home
Access a live 24/7 view of your home from anywhere with this intuitive camera app. Enjoy real-time streaming, two-way audio, and motion detection alerts. Features include pan, tilt, zoom, and 1080p HD video with night vision.
- 24/7 live view from anywhere
- Real-time video streaming
- Two-way conversation and audio
- Motion detection highlights
- Pan, tilt, and zoom controls
- 1080p HD video with night vision
- Micro SD card video security
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The YI Home app is the intuitive and easy-to-use app for all your YI Home Cameras. Follow the simple onscreen instructions to add your YI Home camera then easily access 24/7 live view of your home, from anywhere. App Features • Real-time video streaming from your camera to your phone • 2-way conversation and audio • Activity highlights of unusual motion detected activity • Pan, tilt, and zoom on your phone to see more details of the room • 1080p HD video with both day and night vision • Secure your videos with a micro SD card Auto-renewing subscriptions info: -Subscription name:Kami Cloud Entry(Yearly) 1 cam, 7 days history, motion -Length of subscription: 365 days -Price of subscription: $29.99 per year -Subscription name:Kami Cloud CVR(Yearly) -Length of subscription: 365 days -Price of subscription: $59.99 per year -Subscription name:Kami Cloud Standard(Yearly) -Length of subscription: 365 days -Price of subscription: $79.99 per year -Subscription name:Kami Cloud Plus(Yearly) -Length of subscription: 365 days -Price of subscription: $129.99 per year -Subscription name: Kami Cloud Entry (Monthly) -Length of subscription: 30 days -Price of subscription: $2.99 per month -Subscription name:Kami Cloud CVR (Monthly) -Length of subscription: 30 days -Price of subscription: $7.99 per month -Subscription name:Kami Cloud Standard (Monthly) -Length of subscription: 30 days -Price of subscription: $9.99 per month -Subscription name:Kami Cloud Standard (Monthly) -Length of subscription: 30 days -Price of subscription: $14.99 per month -Payment: The user confirms the purchase and pays it with their iTunes account. -Cancel renewal:If you need to cancel the renewal, please manually turn off the automatic renewal function in Itunes / Apple ID settings management 24 hours before the current subscription expire -Renew:Apple iTunes account will be debited within 24 hours before expiration, and the subscription cycle will be postponed for one month after the deduction is successful -Precautions:After renewing the subscription automatically, the service is free for the first month, and the trial period ends from the day of purchase to the day of next month, and the charge is automatically deducted -Terms of use:https://api.yitechnology.com/home/terms_of_use?location=USA&lang=zh-CN?location=USA&lang=zh-CN -Privacy policy:https://api.yitechnology.com/home/privacy_agreement?location=USA&lang=zh-CN?location=USA&lang=zh-CN -YI Cloud Service Agreement:https://api.yitechnology.com/homecamera/cloud_agreement_ios.html - A functional link to the Terms of Use (EULA) Automatic Renewal Service Agreement:https://app.yitechnology.com/#/YihomeAutoRenewalAgreement
MathBell
This app uses math puzzles to ensure you wake up. Solve arithmetic, missing numbers, or running totals to silence your alarm. It offers follow-up alerts and a wake-up check to keep you alert.
- Math puzzles to stop alarms
- Multiple puzzle types and difficulties
- Follow-up alarms until solved
- Limited snooze functionality
- Customizable alarm repeats
- Home and Lock Screen widgets
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MathBell is a math alarm clock. Your alarm rings through Silent and Focus, and it only stops when you solve a short puzzle. Solve to stop Each alarm asks for a few quick sums before it goes quiet. Pick the puzzle type and difficulty: arithmetic, running totals, missing numbers and more. Follow-ups until you solve it If you dismiss the alarm without solving, MathBell rings again every minute until the puzzle is solved. Snooze is limited, so you cannot keep putting it off. Built for mornings - Alarms ring through Silent and Focus with the system alarm sound - Weekday, weekend and custom repeats - Choose from six alarm sounds - Home Screen and Lock Screen widgets that show your next alarm - A wake-up check a few minutes after you solve, so you know you are really up Made for iPhone Duo MathBell works in portrait and landscape on both displays, so you can set alarms on the outer display or spread out on the inner one. Free and Pro Start with 3 alarms for free. MathBell Pro unlocks unlimited alarms, every puzzle type and difficulty, all sounds and widget styles. Choose a yearly or monthly subscription, or pay once for lifetime access. Subscriptions renew automatically until cancelled; manage them in Settings. No account, no ads, no tracking. MathBell stores your alarms on your device. Questions or feedback: mathbell@curatolabs.app Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mathbell.curatolabs.app/privacy/
Screenshots
Verdict
The clearest difference is rating: YI Home at 4.3 against MathBell's 3.0. YI Home also leads on ratings volume (72K vs 1) and chart position (#180 vs unranked). MathBell's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price, in-app purchases and monetization model 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. YI Home sells 10 in-app purchases, starting at $4.99 per month and MathBell sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
YI Home holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: YI Home has 72K ratings behind it against 1, so its average is the more settled of the two.
YI Home ships an update every 2 weeks, MathBell every 4 days. The most recent releases landed on November 12, 2026 and November 9, 2026 respectively.
| Parameter | YI Home | MathBell |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (72K ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 12.7% of reviews | — |
| Number of ratings | 72K — better | 1 |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | #180 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 285 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | ZK (HK) LIMITED | Tien Dat Nguyen |
Customer experience
YI Home
MathBell
Bugs and requests
YI Home
Reported bugs
4 issues- App crashes on launch
- Inability to view recordings beyond 24 hours
- Cameras randomly going offline
- Issues with connecting to new WiFi networks
Requested features
6 requests- Add iPad app with multi-camera view
- Improve video playback controls and timeline
- Allow more flexible motion detection zones
- Provide option to disable motion alerts but still record
- Add background audio support for baby monitor use
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- Improve customer support and response times
MathBell
Not enough reviews yet to summarise bugs or requests.
In-app purchases
YI Home
- 7d. Loop(30d.), 1 Cam$4.991 Month
- 7d. Loop(30d.), 1 Cam, CVR$7.991 Month
- 15d. Loop(30d.), 5 Cam$11.991 Month
Show 7 moreShow fewer
- 5 cams,15 days history, motion$11.991 Month
- 30d. Loop(30d.), 5 Cam$14.991 Month
- Kami Cloud Entry Plan$15.991 Month
- Kami Cloud CVR Plan$18.991 Month
- Kami Cloud Standard Plan$22.991 Month
- Kami Cloud Plus Plan$25.991 Month
- Kami Cloud Entry Plan3 Days trial$59.991 Year
MathBell
- MathBell Pro Monthly$1.991 Month
- MathBell Pro Yearly$4.991 Year
- MathBell Pro$14.99









