P.M.M.D Calculator vs HGsmart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
P.M.M.D Calculator
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P.M.M.D Calculator makes division, multiplication, addition and subtraction steps quickly and easily. Easy to understand. Perfect for teachers, students, or anyone who wants to learn or prepare math exercises. Features: • Clean, easy-to-use interface. • Instant calculation results. • Copy answers into other apps. • Save results as an image directly to your camera roll. • Customize font type, text color, and background color. • Option to show or hide calculation steps [Plus/Minus]. • Option to show or hide the remainder [Division]. • Option to show or hide the plus sign in calculations [Multiplication]. This app is great for: Teachers & Educators – Create math materials and examples instantly Students – Practice and understand plus/minus/multiplication/division operations step by step Parents – Quickly check kids’ homework with ease Make learning and teaching math simpler with P.M.M.D Calculator. Simplify math practice and make division, multiplication, addition and subtraction easier with P.M.M.D Calculator. Thanks for your support! Visit nitrio.com for more great apps for your iOS devices.
HGsmart
This app connects with smart pet products to offer comprehensive care solutions. It allows remote control of devices, customization of settings, and real-time monitoring of your pet's health and routine.
- Remote device operation
- Customizable working modes
- Real-time device monitoring
- Pet health data recording
- User-friendly interface
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HGsmart is the perfect companion for you and HONEYGUARDIAN pet smart products, let our smart products and smart app work together to provide you with a full range of pet care solutions, providing a peace of mind and more good times for your beloved pets. Please follow the product body prompts or user manual to download and use this app. 1. Remote operation of litter box, feeder and other smart devices; 2. Various customizable features to tailor the working mode to you and your furry friend; 3. Real-time device monitoring, recording and reporting the working status, allowing you to keep track of your pet's routine; 4. Recording pet health data to help you analyze your pet's well-being; 5. User-friendly experience with prompt feedback for your suggestions; 6. Unlock more features and join us now! For more information, please contact us at support@honeyguardian.com .
Screenshots
Verdict
The clearest difference is price: HGsmart at Free against P.M.M.D Calculator's $3.99. HGsmart also leads on update cadence (every 6 weeks vs every 22 months) and rating (1.3 vs 1.0). P.M.M.D Calculator's advantage is iOS requirement (13 vs 15.6). On 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
HGsmart is free to download; P.M.M.D Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HGsmart holds the better App Store score, 1.3 against 1.0. That said, the two scores are not equally well evidenced: HGsmart has 14 ratings behind it against 1, so its average is the more settled of the two.
P.M.M.D Calculator ships an update every 22 months, HGsmart every 6 weeks. Both last shipped on October 30, 2026.
| Parameter | P.M.M.D Calculator | HGsmart |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) | 1.3 (14 ratings) — better |
| Positive reviews | — | 22.0% of reviews |
| Number of ratings | 1 | 14 — better |
| Update frequency | Every 22 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Heng Jia Liang | Shenzhen Tahao Technology Co., Ltd. |
Bugs and requests
P.M.M.D Calculator
Not enough reviews yet to summarise bugs or requests.
HGsmart
Reported bugs
22 issues- Cannot log in
- Account does not exist error
- Email not correct error during registration
- WiFi only accepts 5 character passwords
- No notifications for feed distribution
Show 17 moreShow fewer
- Cannot connect device
- No verification code sent to email
- Cannot log in from second phone
- App suddenly stopped working
- Error message in Chinese characters
- Service not found error
- Unable to retrieve states error
- Cannot delete device to re-register
- Password section has a glitch
- WiFi not responding
- App does not allow access
- Request timed out when changing feeding plan
- System internal error
- Feeding plan not displayed
- Cannot remove feeding time
- Litter box offline but it's not
- App reads full bin when empty
Requested features
12 requests- Notification when feed is distributed
- Fix login issues
- Fix registration issues
- Fix WiFi connection issues
- Fix Chinese error messages
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- Improve server stability
- Allow editing of feeding plans
- Fix low food warnings
- Allow conversion to standard time
- Adjustable font size
- Accurate food quantity display
- Fix offline status reporting
In-app purchases
P.M.M.D Calculator
No in-app purchases
HGsmart
No in-app purchases
