# Approximationist World Clock vs osaring sizer

The clearest difference is price: osaring sizer at Free against Approximationist World Clock's $0.99. osaring sizer also leads on update cadence (every 4 days vs every 2 months) and iOS requirement (15 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

osaring sizer 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.

Approximationist World Clock ships an update every 2 months, osaring sizer every 4 days. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Approximationist World Clock | osaring sizer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/approximationist-world-clock/id6762967230/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 2 MB | 58 MB |
| Requires iOS | 17.0 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Simply Useful Apps](https://appshunter.io/developer/321416742) | [Shenzhen Huoyan Intelligence Co.,Ltd](https://appshunter.io/developer/1895154951) |

## 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


### osaring sizer

[App page](https://appshunter.io/ios/app/osaring-sizer/id6766071045)

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

**In-app purchases:** none


## Frequently asked questions

### Is Approximationist World Clock free?

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

### Is osaring sizer free?

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

### Do Approximationist World Clock or osaring sizer have ads?

Neither Approximationist World Clock nor osaring sizer shows ads.

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

Approximationist World Clock ships an update every 2 months, and osaring sizer every 4 days. Most recently, Approximationist World Clock was updated on October 6, 2026 and osaring sizer on October 1, 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.*