# Chaos Clock vs Postplane

The clearest difference is update cadence: Postplane at every 10 days against Chaos Clock's every 2 months. Chaos Clock's advantage is rating (4.9 vs 4.6) and review sentiment (100% vs 80%). On price, ratings volume, 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.

Chaos Clock holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 12 and 11 respectively. Written reviews point the same way: 100% of Chaos Clock's written reviews are positive against 80% of Postplane's.

Chaos Clock ships an update every 2 months, Postplane every 10 days. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Chaos Clock | Postplane |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (12 ratings)](https://appshunter.io/ios/app/chaos-clock/id977164677/reviews)** | [4.6 (11 ratings)](https://appshunter.io/ios/app/postplane/id1523234862/reviews) |
| Number of ratings | **12** | 11 |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free | Free |
| Size | 13 MB | 50 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Special Treat, LLC](https://appshunter.io/developer/739067466) | [Postplane LLC](https://appshunter.io/developer/1523234864) |

## What reviewers say

### Chaos Clock

[App page](https://appshunter.io/ios/app/chaos-clock/id977164677)

Track time and dates according to Discordian principles and Erisian measurements. Features a countdown to X-Day and includes numerous Discordian holidays.

**Highlights:** Discordian date and time measurement, Erisian Time Measurement, Countdown to X-Day, St. Tib's Day and canonical Holydays, 165 Discordian Holydays

**Features:** macOS Compatibility

**In-app purchases:** none


### Postplane

[App page](https://appshunter.io/ios/app/postplane/id1523234862)

A digital canvas for collaborative expression and communication. Share your creations instantly with others viewing your postplanes for synchronized interaction.

**Highlights:** Digital canvas for self-expression, Collaborative content creation, Instantly synchronized communication, Shareable postplanes, Cross-device compatibility

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

**In-app purchases:** none


## Frequently asked questions

### Is Chaos Clock free?

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

### Is Postplane free?

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

### Which has better reviews, Chaos Clock or Postplane?

Chaos Clock is rated higher. Chaos Clock averages 4.9 out of 5 from 12 ratings, while Postplane averages 4.6 from 11 ratings.

### Do Chaos Clock or Postplane have ads?

Neither Chaos Clock nor Postplane shows ads.

### Which is updated more often, Chaos Clock or Postplane?

Chaos Clock ships an update every 2 months, and Postplane every 10 days. Most recently, Chaos Clock was updated on October 6, 2026 and Postplane 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.*