# 13 vs ごみゼロ

The clearest difference is price: ごみゼロ at Free against 13's $3.99. ごみゼロ also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 4 months). 13's advantage is iOS requirement (12.0 vs 14). On ads there is nothing between them.

ごみゼロ is free to download; 13 costs $3.99 up front. 13 sells 3 one-off in-app purchases. ごみゼロ asks for nothing beyond the download.

13 ships an update every 4 months, ごみゼロ every 3 weeks. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 13 | ごみゼロ |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.6 (31 ratings)](https://appshunter.io/ios/app/1320sync-db/id1463342762/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 84.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 29 MB | 128 MB |
| Requires iOS | **12.0** | 14 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The RedHouse Apps](https://appshunter.io/developer/384363265) | [CLEARWATERPROJECT, General Inc. Association](https://appshunter.io/developer/623719425) |

## What reviewers say

### 13

[App page](https://appshunter.io/ios/app/1320sync-db/id1463342762)

Explore the natural cycles of time and discover your unique Galactic Signature. This app offers insights into ancient wisdom and a new perspective on time, helping you connect with Earth and strengthen synchronicity. It provides detailed information and tools to sync with cosmic cycles.

**Highlights:** Galactic Signature discovery, Mayan Dreamspell Calendar Dashboard, 13:20 Theory information, Tzolkin calendar with GAP days, Contact import and Mayan readings, 13 Moon Calendar integration, Combined Kin Calculator

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip Jar: Small Coffee | $1.99 | one-time |
| Tip Jar: Medium Coffee | $4.99 | one-time |
| Tip Jar: Large Coffee | $9.99 | one-time |


### ごみゼロ

[App page](https://appshunter.io/ios/app/id6470788377)

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

**In-app purchases:** none


## Frequently asked questions

### Is 13 free?

13 costs $3.99, and also offers in-app purchases.

### Is ごみゼロ free?

ごみゼロ is free to download, with no in-app purchases.

### Do 13 or ごみゼロ have ads?

Neither 13 nor ごみゼロ shows ads.

### Which is updated more often, 13 or ごみゼロ?

13 ships an update every 4 months, and ごみゼロ every 3 weeks. Most recently, 13 was updated on September 30, 2026 and ごみゼロ on October 13, 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.*