Ruler App vs LYNX II
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ruler App
Transform your iPhone or Apple Watch into a precise measuring tool. Easily switch between imperial and metric units and adjust the ruler's height for direct comparisons. Customize your experience with different color schemes.
- Imperial and metric scale switching
- Adjustable ruler height
- Color scheme customization
- Apple Watch compatibility
- Switchable ruler scales
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Turn your iPhone or Apple Watch into a ruler and measure the scale of any small thing. Features: - switch between imperial and metric scales - adjust the height of the ruler for direct comparison - different color schemes - switchable ruler scales Apple Watch App: - switch between imperial and metric scales - switchable ruler scales
LYNX II
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LYNX II, the APP for all Orion connected devices. Configure Lyra and get notifications directly on you phone when abnormal behavior is detected on your facilities. To use the app a company and user account needs to be setup in Orion, contact your local SafeLine support for more info.
Screenshots
Verdict
The clearest difference is price: LYNX II at Free against Ruler App's $0.99. LYNX II also leads on update cadence (monthly vs every 11 months). Ruler App's advantage is iOS requirement (12.0 vs 15.0). 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
LYNX II is free to download; Ruler App costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ruler App ships an update every 11 months, LYNX II monthly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Ruler App | LYNX II |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 11 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 378 MB |
| Age rating | 4+ | 4+ |
| Developer | Piet Jonas | SafeLine Group |
In-app purchases
Ruler App
No in-app purchases
LYNX II
No in-app purchases
