# Metric Seconds vs BTC ePlug

The clearest difference is iOS requirement: BTC ePlug at 12.0 against Metric Seconds's 14.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Metric Seconds ships an update every 7 months, BTC ePlug every 10 months. The most recent releases landed on June 1, 2026 and December 15, 2025 respectively.

## The numbers

| Metric | Metric Seconds | BTC ePlug |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/metric-seconds/id1257282334/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Monetization | Free | — |
| Size | 2 MB | 21 MB |
| Requires iOS | 14.1 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tangozulu R&D](https://appshunter.io/developer/373001554) | [Behavior Tech Computer Corp.](https://appshunter.io/developer/1573381703) |

## What reviewers say

### Metric Seconds

[App page](https://appshunter.io/ios/app/metric-seconds/id1257282334)

This utility app simplifies time calculations by converting to and from metric units. It allows users to tell and measure time using seconds as the base unit, with multipliers like kilo, Mega, and Giga for larger durations. It offers a fun and practical way to approach time measurement, especially for scientific or engineering contexts.

**Highlights:** Convert time to and from metric units, Tell time in metric, Measure time in metric, Uses seconds as the base unit, Supports metric multipliers (kilo, Mega, Giga), UTC-based time with no time zones

**Features:** macOS Compatibility

**In-app purchases:** none


### BTC ePlug

[App page](https://appshunter.io/ios/app/btc-eplug/id1573381701)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Metric Seconds free?

Metric Seconds is free to download, with no in-app purchases.

### Is BTC ePlug free?

BTC ePlug is free to download, with no in-app purchases.

### Do Metric Seconds or BTC ePlug have ads?

Neither Metric Seconds nor BTC ePlug shows ads.

### Which is updated more often, Metric Seconds or BTC ePlug?

Metric Seconds ships an update every 7 months, and BTC ePlug every 10 months. Most recently, Metric Seconds was updated on June 1, 2026 and BTC ePlug on December 15, 2025.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*