CATLINK vs RulerApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CATLINK
This app connects users to an IoT ecosystem for pet care, focusing on cats. It facilitates interaction between people, pets, and connected devices, with product development driven by the needs of cats and their owners.
- IoT ecosystem for pet care
- Connect people, pets, and devices
- Cat-centric product development
- Focus on owner needs
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CATLINK is an intelligent pet care brand founded in 2017, the company is committed to building an Internet of Things ecosystem where people, things and pets could connect with each other. Product research and development are conducted totally based on the actual needs of cats and their parents. CATLINK，LINK EVERYTHING FOR CAT’S LIFE.
RulerApp
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Turn your iPhone or iPad into a precise on-screen ruler. Hold any small object against the screen and read its exact size — no tape measure, no guesswork. FEATURES • Accurate out of the box — no manual calibration. Ruler scale is calculated from your exact device's screen density. • Switch between centimeters, inches, or both at once. • Drag to drop a crosshair anywhere and read precise X/Y measurements from the corner. • Toggle a grid overlay (off, major lines, or major + minor) for finer alignment. • iPad extras: hover measurements with a trackpad or Apple Pencil, and keyboard shortcuts (U for units, G for grid) with a hardware keyboard. Simple, fast, and always in your pocket.
Screenshots
Verdict
The clearest difference is iOS requirement: CATLINK at 13.0 against RulerApp's 16.0. 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.
| Parameter | CATLINK | RulerApp |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (94 ratings) — better | — |
| Positive reviews | 28.0% of reviews | — |
| Number of ratings | 94 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 523 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Shanghai Catlink Intelligent Technology Co.,Ltd | Mathieu Rancourt |
Bugs and requests
CATLINK
Reported bugs
23 issues- WiFi connection fails during setup and frequently disconnects
- App crashes during device pairing process
- QR code scanning causes app to crash
- Device not found errors for various features
- Server error messages when changing settings
Show 18 moreShow fewer
- Phone number binding functionality broken
- SMS verification code not being received or instantly expiring
- App gets stuck at data transfer screen (33% loading)
- Automatic logouts without user action
- Account information lost after app updates
- Device information disappears after re-login
- Weight detection highly inaccurate and inconsistent
- Cat identification failing for multiple cats
- Notifications displaying in wrong language despite selection
- Chinese characters appearing in English interface
- Clipboard content being read without permission
- Password field limited to 6-14 characters (security concern)
- Time zone not respecting local settings
- Video not saving or including cat in frame
- Setup instructions in Chinese despite English selection
- Device offline messages despite active WiFi connection
- App layout misaligned when using non-English languages
- Hard-coded metric units despite imperial selection
Requested features
14 requests- Metric to imperial unit conversion (kg to lbs, Celsius to Fahrenheit)
- Detailed historical records and activity logs
- Improved notification system with better translations
- Pet identification by type of waste (urination vs defecation)
- Manual cleaning button in timed mode without mode switching
Show 9 moreShow fewer
- Google Home and smart home integration
- Ability to share account across multiple devices simultaneously
- Improved setup instructions with better documentation
- SMS verification code format that accepts numbers only
- WiFi password field that accepts spaces
- Adjustable feeding intervals for facial recognition mode
- Litter type customization options
- Real-time weight and humidity display on main screen
- Offline functionality without WiFi requirement
RulerApp
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CATLINK
No in-app purchases
RulerApp
No in-app purchases
