Ruler App vs TouchNav Pro
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
Read full descriptionHide full description
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
TouchNav Pro
Read full descriptionHide full description
Step 1: Open the app and ensure Bluetooth is enabled.If Bluetooth is not enabled, an instruction will appear to turn it on. Step 2: Search for nearby Bluetooth devices.Available devices will be displayed for connection. Step 3: Click to open the control page. Page 1: Control functions using on-screen buttons. Page 2: Use the touchscreen to simulate a mouse. Page 3: View instructions on how to use the app.
Screenshots
Verdict
The clearest difference is price: TouchNav Pro at Free against Ruler App's $0.99. TouchNav Pro also leads on update cadence (every 3 weeks vs every 11 months). On ads, in-app purchases, device support and iOS requirement 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
TouchNav Pro 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, TouchNav Pro every 3 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Ruler App | TouchNav Pro |
|---|---|---|
| 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 | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 2 MB | 23 MB |
| Age rating | 4+ | 9+ |
| Developer | Piet Jonas | 杨 周 |
In-app purchases
Ruler App
No in-app purchases
TouchNav Pro
No in-app purchases
Questions
Is Ruler App free?
Is TouchNav Pro free?
Do Ruler App or TouchNav Pro have ads?
Which is updated more often, Ruler App or TouchNav Pro?
Other comparisons
