Ruler App vs Battery Genie Debug
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
Battery Genie Debug
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You could change some parameters by App terminal to make SOC showing exactly.
Screenshots
Verdict
The clearest difference is price: Battery Genie Debug at Free against Ruler App's $0.99. On update cadence, 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
Battery Genie Debug 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, Battery Genie Debug every 13 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | Ruler App | Battery Genie Debug |
|---|---|---|
| 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 — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 32 MB |
| Age rating | 4+ | 17+ |
| Developer | Piet Jonas | RPS Battery Co.,Ltd |
In-app purchases
Ruler App
No in-app purchases
Battery Genie Debug
No in-app purchases
Questions
Is Ruler App free?
Is Battery Genie Debug free?
Do Ruler App or Battery Genie Debug have ads?
Which is updated more often, Ruler App or Battery Genie Debug?
Other comparisons
