# Approximationist World Clock vs Spectrum

The clearest difference is price: Spectrum at Free against Approximationist World Clock's $0.99. Spectrum also leads on update cadence (every 4 days vs every 2 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

Spectrum is free to download; Approximationist World Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Approximationist World Clock against 5.0 for Spectrum. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Approximationist World Clock ships an update every 2 months, Spectrum every 4 days. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Approximationist World Clock | Spectrum |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/approximationist-world-clock/id6762967230/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/spectrum-apps-in-messages/id6777616651/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 6 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Simply Useful Apps](https://appshunter.io/developer/321416742) | [Photon Codes](https://appshunter.io/developer/1879316128) |

## What reviewers say

### Approximationist World Clock

[App page](https://appshunter.io/ios/app/approximationist-world-clock/id6762967230)

This app simplifies understanding global time zones with a focus on approximations rather than exact minutes. It helps users quickly see if a time is suitable for others worldwide, making coordination easier for remote teams, travelers, and families.

**Highlights:** Approximation-first time zone display, Compare multiple cities at a glance, Quick overlap spotting for availability, Human-friendly time descriptions, Time slider functionality, Export/import and share team info

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Spectrum

[App page](https://appshunter.io/ios/app/spectrum-apps-in-messages/id6777616651)

This app provides a mini-app launcher directly within iMessage. It allows users to quickly access recent mini-apps, browse visual cards, and preview lightweight experiences without exiting their conversations.

**Highlights:** iMessage mini-app launcher, Access recent mini-apps, Browse visual cards, Preview lightweight experiences, Compact and expanded views, Detailed preview states

**Features:** iMessage stickers

**In-app purchases:** none


## Frequently asked questions

### Is Approximationist World Clock free?

Approximationist World Clock costs $0.99, with no in-app purchases.

### Is Spectrum free?

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

### Which has better reviews, Approximationist World Clock or Spectrum?

Approximationist World Clock and Spectrum are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do Approximationist World Clock or Spectrum have ads?

Neither Approximationist World Clock nor Spectrum shows ads.

### Which is updated more often, Approximationist World Clock or Spectrum?

Approximationist World Clock ships an update every 2 months, and Spectrum every 4 days. Most recently, Approximationist World Clock was updated on October 6, 2026 and Spectrum on October 22, 2026.

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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.*