Comparison

MRVI Display vs Helios EOS Timer

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

Head to head

About

MRVI Display

Features

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This MRVI app utilizes Bluetooth technology to remotely display the dial face of the CHANCE® Multi-Range Voltage Indicator® (MRVI) which is a portable tool used by qualified personnel to confirm that a high-voltage line is energized or de-energized prior to performing maintenance.

About

Helios EOS Timer

Features

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The Helios EOS Timer app is a comprehensive tool to configure the functionality of the EOS Timer. Examples include setting the functional mode, batch frequency, and PPM. Live data is also displayed in the app such as temperature, flow rate, and solar panel volts and amps.

Screenshots

MRVI Display3 screens

Helios EOS Timer3 screens

Verdict

The call

The clearest difference is update cadence: Helios EOS Timer at every 5 weeks against MRVI Display's every 3 months. MRVI Display's advantage is device support (4 vs 1) and iOS requirement (9.0 vs 18.0). On price, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MRVI Display ships an update every 3 months, Helios EOS Timer every 5 weeks. The most recent releases landed on October 10, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 3 level

MRVI Display versus Helios EOS Timer: the parameters behind the verdict, then further details
Parameter	MRVI Display	Helios EOS Timer
Price	Free	Free
Update frequency	Every 3 months	Every 5 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod, Apple Watch — better	iPhone
Requires iOS	9.0 — better	18.0
Further details — not scored
Size	6 MB	4 MB
Age rating	4+	4+
Developer	Bevins Co	Valormill

In-app purchases

None

MRVI Display

No in-app purchases

None

Helios EOS Timer

No in-app purchases

Questions

Is MRVI Display free?

MRVI Display is free to download, with no in-app purchases.

Is Helios EOS Timer free?

Helios EOS Timer is free to download, with no in-app purchases.

Do MRVI Display or Helios EOS Timer have ads?

Neither MRVI Display nor Helios EOS Timer shows ads.

Which is updated more often, MRVI Display or Helios EOS Timer?

MRVI Display ships an update every 3 months, and Helios EOS Timer every 5 weeks. Most recently, MRVI Display was updated on October 10, 2026 and Helios EOS Timer on September 21, 2026.