AI Trash Navi vs Cat Weight Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI Trash Navi
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- Collection Calendar & Notifications Features a calendar that shows "What day is it today?" at a glance. Stay on top of your busy schedule with alert functions (the day before and the day of) to prevent missed pickups. Simply take a photo of your local collection calendar, and the AI will automatically scan and sync the schedule to the app. - AI Sorting Recognition: Just Point and Scan Unsure how to dispose of something? Just snap a photo, and the AI instantly identifies the item. It provides advice on the correct disposal method based on your specific local rules. - Supports Local Rules Throughout Japan Covers a wide range of areas across Japan. Whether you’ve just moved or are on the go, you can instantly check the accurate waste disposal rules for your current location. - Multilingual Support for Everyone To ensure foreign residents who are not yet familiar with Japanese can use it with peace of mind, the app supports multiple languages.
Cat Weight Tracker
Easily track your cat's weight by weighing yourself with and without them. Log entries in seconds and monitor for concerning weight loss with customizable alerts based on veterinary guidelines.
- Weigh cat while holding
- Quick entry with pre-filled values
- Home-screen widget for latest weight
- Monitors for concerning weight loss
- Customizable loss thresholds
- Supports multiple scale types
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A cat's weight is the most accessible health signal you can track at home. But cats don't sit on scales, and logs don't get kept — so this app is built to make it stick. ■ Weigh while holding Pick up your cat and step on the scale. Enter the total, and the app subtracts your registered weight to get your cat's. Readings from pet scales, baby scales, and the vet all go into the same graph. ■ Three seconds per entry The last value is pre-filled, so a few taps on +10g / -10g is all it takes. Hold to move faster. A home-screen widget shows the latest weight and the change since last time. ■ Loss matters more than gain Unlike people, weight loss is the more worrying sign in cats. This app never congratulates a drop. It watches both directions and quietly flags changes such as a 3% loss over 4 weeks, a 5% loss over 8 weeks, or a 10% drop from the six-month high. The thresholds and their sources (WSAVA, AAHA, and others) are published in full inside the app. Alerts are not a diagnosis. If something concerns you, please consult your veterinarian.
Screenshots
Verdict
The clearest difference is update cadence: AI Trash Navi at every 3 days against Cat Weight Tracker's every 3 weeks. Cat Weight Tracker's advantage is iOS requirement (15.0 vs 17.0). 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.
AI Trash Navi ships an update every 3 days, Cat Weight Tracker every 3 weeks. The most recent releases landed on October 21, 2026 and October 30, 2026 respectively.
| Parameter | AI Trash Navi | Cat Weight Tracker |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 3 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | SATOSHI UTSUNOMIYA | Makino Shii |
In-app purchases
AI Trash Navi
No in-app purchases
Cat Weight Tracker
No in-app purchases
Questions
Is AI Trash Navi free?
Is Cat Weight Tracker free?
Do AI Trash Navi or Cat Weight Tracker have ads?
Which is updated more often, AI Trash Navi or Cat Weight Tracker?
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