Comparison

RidgeRelay vs CellArc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RidgeRelay

Control up to six relay outputs directly from your iPhone. Personalize relay names, icons, and colors. Monitor live hardware status via Bluetooth connection.

Highlights
  • Control six relay outputs
  • Customize relay names
  • Personalize icons and colors
  • View live hardware status
  • Bluetooth connectivity
Features
Read 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.

About

CellArc

Features
Read 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

RidgeRelay3 screens
CellArc3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

RidgeRelay is free to download; CellArc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
RidgeRelay versus CellArc: the parameters behind the verdict, then further details
ParameterRidgeRelayCellArc
PriceFree — better$1.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 18 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size1 MB62 MB
Age rating4+4+
DeveloperSWITCHED KINETIC IDEAS LLCRobert Corbin

In-app purchases

None

RidgeRelay

No in-app purchases

None

CellArc

No in-app purchases

Questions

Is RidgeRelay free?
RidgeRelay is free to download, with no in-app purchases.
Is CellArc free?
CellArc costs $1.99, with no in-app purchases.
Do RidgeRelay or CellArc have ads?
Neither RidgeRelay nor CellArc shows ads.
Which is updated more often, RidgeRelay or CellArc?
RidgeRelay ships an update every 18 months, and CellArc every 10 days. Most recently, RidgeRelay was updated on September 22, 2026 and CellArc on September 21, 2026.

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