# Circa³ vs hoootag

The clearest difference is price: hoootag at Free against Circa³'s $3.99. hoootag also leads on update cadence (every 6 days vs monthly). Circa³'s advantage is device support (4 vs 2) and iOS requirement (11.0 vs 16.6). On ads and in-app purchases there is nothing between them.

hoootag is free to download; Circa³ costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Circa³ ships an update monthly, hoootag every 6 days. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Circa³ | hoootag |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.5 (384 ratings)](https://appshunter.io/ios/app/circa-time-zone-converter/id968698352/reviews)** | — |
| Number of ratings | **384** | — |
| Positive reviews | 63.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Free | — |
| Size | 39 MB | 52 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kostiantyn Zuiev](https://appshunter.io/developer/1053341480) | [Suzhou Aiqian Technology Co., Ltd](https://appshunter.io/developer/1823526259) |

## What reviewers say

### Circa³

[App page](https://appshunter.io/ios/app/circa-time-zone-converter/id968698352)

Easily manage time across different locations and time zones. Find optimal meeting times and generate invitations that suit everyone's schedule. This tool helps synchronize teams working in various parts of the world.

**Highlights:** Compare time across multiple locations, View working hour overlaps, Integrate calendars, Organize personally, Create one-touch meeting invitations

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### hoootag

[App page](https://appshunter.io/ios/app/hoootag/id6755594834)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Circa³ free?

Circa³ costs $3.99, with no in-app purchases.

### Is hoootag free?

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

### Do Circa³ or hoootag have ads?

Neither Circa³ nor hoootag shows ads.

### Which is updated more often, Circa³ or hoootag?

Circa³ ships an update monthly, and hoootag every 6 days. Most recently, Circa³ was updated on October 26, 2026 and hoootag on October 28, 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.*