# Time Zone Converter・Convertime vs Butterfly Subscription Tracker

The clearest difference is iOS requirement: Time Zone Converter・Convertime at 16.0 against Butterfly Subscription Tracker's 26.0. 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.

Time Zone Converter・Convertime ships an update every 2 months, Butterfly Subscription Tracker monthly. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Time Zone Converter・Convertime | Butterfly Subscription Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/time-zone-converterconvertime/id6479019000/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 9 MB | 3 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Siarhei Serdziukou](https://appshunter.io/developer/1575791894) | [Eduardo Salinas Marquez](https://appshunter.io/developer/1459387057) |

## What reviewers say

### Time Zone Converter・Convertime

[App page](https://appshunter.io/ios/app/time-zone-converterconvertime/id6479019000)

Easily find the current time and plan meetings across different time zones. This tool helps you avoid mental calculations by visually aligning schedules and identifying overlapping hours for seamless coordination.

**Highlights:** Multiple time zone display, Meeting planner, Visual time scale, AM/PM or 24-hour format, GMT code display, Meeting time export

**Features:** macOS Compatibility

**In-app purchases:** none


### Butterfly Subscription Tracker

[App page](https://appshunter.io/ios/app/butterfly-subscription-tracker/id6761439670)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Zone Converter・Convertime free?

Time Zone Converter・Convertime is free to download, with no in-app purchases.

### Is Butterfly Subscription Tracker free?

Butterfly Subscription Tracker is free to download, with no in-app purchases.

### Do Time Zone Converter・Convertime or Butterfly Subscription Tracker have ads?

Neither Time Zone Converter・Convertime nor Butterfly Subscription Tracker shows ads.

### Which is updated more often, Time Zone Converter・Convertime or Butterfly Subscription Tracker?

Time Zone Converter・Convertime ships an update every 2 months, and Butterfly Subscription Tracker monthly. Most recently, Time Zone Converter・Convertime was updated on November 8, 2026 and Butterfly Subscription Tracker on November 9, 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.*