RidgeRelay vs CellArc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RidgeRelay
Control up to six relay outputs directly from your iPhone. Personalize relay names, icons, and colors. Monitor live hardware status via Bluetooth connection.
- Control six relay outputs
- Customize relay names
- Personalize icons and colors
- View live hardware status
- Bluetooth connectivity
Read full descriptionHide full description
RidgeRelay lets you control six relay outputs from your iPhone. Customize relay names, icons, and colors while viewing live hardware-reported status over Bluetooth.
CellArc
Read full descriptionHide full description
Routine Trials keeps your user-recorded battery-use observations in a local notebook and compares a changed habit with its baseline only when conditions match. HOW IT WORKS 1. Open Power Lab and choose Routine Trials. Explore the clearly labeled example to see how matching works. 2. Record completed trials with their activity, changed habit, timing, battery percentages, brightness, network and surroundings. Flag charging or interruptions. 3. Collect at least three matching pairs, inspect the median drain rates and reading-resolution limits, then share the observation report. Battery Action Plan, Scenario Studio, foreground battery history, charging sessions, trip planning, thermal tools and offline references remain available. Routine Trials is prominently linked from Power Lab. Corrupt trial files are preserved and blocked from overwrite. WHAT TO KNOW Battery readings and conditions are manually recorded. This is not battery health, capacity measurement, continuous monitoring or proof of causation. Trials last 15–240 minutes; less than two percentage points of drain is excluded. Pairing requires matching activity/network/surroundings, brightness and start levels within 5 points, and duration within 25%. Observations are never reused or counted across overlapping periods. Up to 2,000 observations are saved locally. iPhone and iPad.
Screenshots
Verdict
The clearest difference is price: RidgeRelay at Free against CellArc's $1.99. CellArc's advantage is update cadence (every 10 days vs every 18 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
RidgeRelay is free to download; CellArc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RidgeRelay ships an update every 18 months, CellArc every 10 days. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | RidgeRelay | CellArc |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 18 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | SWITCHED KINETIC IDEAS LLC | Robert Corbin |
In-app purchases
RidgeRelay
No in-app purchases
CellArc
No in-app purchases









