# HeyOnCall vs MultiClock Civil/Solar/Metric

The clearest difference is rating: HeyOnCall at 5.0 against MultiClock Civil/Solar/Metric's 4.0. MultiClock Civil/Solar/Metric's advantage is update cadence (every 3 weeks vs every 2 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

HeyOnCall holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

HeyOnCall ships an update every 2 months, MultiClock Civil/Solar/Metric every 3 weeks. The most recent releases landed on June 1, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | HeyOnCall | MultiClock Civil/Solar/Metric |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/heyoncall/id6444051499/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/multiclock-civilsolarmetric/id6468424886/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 21 MB | 1 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CircuitLab, Inc.](https://appshunter.io/developer/864319991) | [Michael Olson](https://appshunter.io/developer/1709885754) |

## What reviewers say

### HeyOnCall

[App page](https://appshunter.io/ios/app/heyoncall/id6444051499)

Manage on-call schedules and receive important alerts directly on your device. This utility app is designed for teams of any size, offering a cost-effective solution for managing critical communication.

**Highlights:** On-call rotations, Alerting system, Escalation management, Push notifications, Affordable for all team sizes

**In-app purchases:** none


### MultiClock Civil/Solar/Metric

[App page](https://appshunter.io/ios/app/multiclock-civilsolarmetric/id6468424886)

This utility app displays time in multiple formats, including civil, solar, and metric. It offers a progress bar for the day's elapsed percentage and shows sunrise/sunset times. A converter tool allows for easy time conversions between different systems.

**Highlights:** Civil time with DST, Solar time based on sun position, Metric time (10,000 units per day), Daily progress bar, Sunrise and sunset times, Time converter tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HeyOnCall free?

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

### Is MultiClock Civil/Solar/Metric free?

MultiClock Civil/Solar/Metric is free to download, with no in-app purchases.

### Which has better reviews, HeyOnCall or MultiClock Civil/Solar/Metric?

HeyOnCall is rated higher. HeyOnCall averages 5.0 out of 5 from 1 ratings, while MultiClock Civil/Solar/Metric averages 4.0 from 3 ratings.

### Do HeyOnCall or MultiClock Civil/Solar/Metric have ads?

Neither HeyOnCall nor MultiClock Civil/Solar/Metric shows ads.

### Which is updated more often, HeyOnCall or MultiClock Civil/Solar/Metric?

HeyOnCall ships an update every 2 months, and MultiClock Civil/Solar/Metric every 3 weeks. Most recently, HeyOnCall was updated on June 1, 2026 and MultiClock Civil/Solar/Metric on June 5, 2026.

---

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