# OpenSesame vs Teezee

The clearest difference is device support: Teezee at 5 against OpenSesame's 3. OpenSesame's advantage is iOS requirement (15.6 vs 17.0). 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.

OpenSesame ships an update weekly, Teezee every 3 days. The most recent releases landed on September 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | OpenSesame | Teezee |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/teezee-visual-world-clock/id6790106315/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Paid |
| Size | 31 MB | 43 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [David Jackson](https://appshunter.io/developer/1873012916) | [XenoCode](https://appshunter.io/developer/1834922938) |

## What reviewers say

### OpenSesame

[App page](https://appshunter.io/ios/app/opensesame-gate-code-manager/id6758457219)

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

**In-app purchases:** none


### Teezee

[App page](https://appshunter.io/ios/app/teezee-visual-world-clock/id6790106315)

Visualize time zones as a visual timeline representing each city's day and night cycle. Easily compare times across different locations by dragging a shared cursor, eliminating the need for complex calculations.

**Highlights:** Visual day/night timelines for cities, Interactive time scrubbing, Real sunrise and sunset times, Home city offset display, iCloud sync across devices, Map-based city adding, Extensive city database

**Features:** Family Sharing, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is OpenSesame free?

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

### Is Teezee free?

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

### Do OpenSesame or Teezee have ads?

Neither OpenSesame nor Teezee shows ads.

### Which is updated more often, OpenSesame or Teezee?

OpenSesame ships an update weekly, and Teezee every 3 days. Most recently, OpenSesame was updated on September 12, 2026 and Teezee on October 8, 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.*