Ruler - Scale Ruler
Ruler is a productivity tool for iOS that displays measurement scales for architectural and engineering tasks.
The App DNA
What makes this app unique?
It replaces physical scale rulers for users who need quick, portable measurement references on mobile devices.
For Users requiring quick, portable reference scales for architectural, engineering, or general measurement tasks on mobile devices.
What does it look like?
Key features
Displays measurement scales based on user-defined units, magnification ratios, and reduced scales. Revenue link: Ad-supported interface during the unlocking process.
Allows manual scale adjustment from 1:1 to 1:100 via screen drag or manual keyboard input. Revenue link: Ad-supported interface during the unlocking process.
Adjusts ruler length and pixel-per-inch density to match specific device hardware.
Disables in-app advertisements through a one-time purchase. Revenue link: In-app purchase gate.
How much does it cost?
Freemium model uses ad-supported free tier with a single in-app purchase to remove advertisements.
Velocity
Dormant developmentplatform expansionShow more...
With only one release in the observed window and 222 days since the last update, the app is currently in a zombie state. Development momentum has ceased, and there have been no feature additions or maintenance patches for over seven months. The latest release focused solely on hardware compatibility for specific iPhone and iPad models.
Who built it?
mitsunori oishi
4 apps tracked · Productivity
Camera - Take photos in 3steps
Bolt Length - (Nominal Length)
語呂合わせ電卓User Sentiment
What do users think recently?
Recent user voice shows an upset sentiment.
How are ratings & reviews evolving?
What users say, by theme
- Lack of scrolling functionality prevents users from measuring items larger than the physical screen size
1 of 1 recent reviews analyzed · limited sample
Read the full review analysisUnlock 1 more frustration theme and 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Ruler - Scale Ruler
How's the Productivity market?
Ruler occupies a niche in the productivity category, maintaining a 3.67-star rating across a small sample of 3 total ratings. The lack of updates for over seven months suggests a maintenance-mode posture rather than active market expansion.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Ruler - Scale Ruler
Where is it heading?
The productivity measurement category is shifting toward apps that integrate hardware-specific calibration with flexible, multi-unit interfaces. Ruler remains exposed due to its static design and lack of feature updates, which will likely lead to further churn as users seek tools that accommodate larger measurement ranges.
- The seven-month release silence suggests the developer has moved to maintenance mode, leaving the app vulnerable to newer, actively updated competitors.
- User complaints regarding the lack of scrolling indicate the app fails to meet the basic requirements for professional measurement, limiting its growth potential.
The SWOT
- Manual PPI calibration enables hardware-specific accuracy.
- Implementing dual-sided ruler interface improves utility.
Next best moves
Ship scrolling functionality because it is the top-requested missing feature -> unlock professional measurement utility.
+ 1 more prioritized moveThe counter-intuitive read
The app's seven-month silence is not a failure of maintenance…
Read the full takeBottom line
Ruler serves a narrow utility, but the lack of scrolling functionality prevents it from displacing physical tools for professional tasks. Addressing this usability gap would unlock the retention needed to justify further investment in the ad-supported free tier.
Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is Ruler suitable for professional architectural work?
Does Ruler allow me to see metric and imperial units at the same time?
What are the main limitations of the free version?
Sources
- [1] App Store
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