# Contest Queue vs Layers by AgriBio Systems

The clearest difference is update cadence: Contest Queue at every 4 days against Layers by AgriBio Systems's every 6 weeks. Contest Queue also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, 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.

Contest Queue ships an update every 4 days, Layers by AgriBio Systems every 6 weeks. The most recent releases landed on October 4, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Contest Queue | Layers by AgriBio Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/layers-by-agribio-systems/id6738145559/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Monetization | — | Free |
| Size | 48 MB | 8 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mike Nelson](https://appshunter.io/developer/1745001791) | [Jacob Sorrill](https://appshunter.io/developer/1779595085) |

## What reviewers say

### Contest Queue

[App page](https://appshunter.io/ios/app/contest-queue/id6502308131)

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

**In-app purchases:** none


### Layers by AgriBio Systems

[App page](https://appshunter.io/ios/app/layers-by-agribio-systems/id6738145559)

This app simplifies composting by helping users track temperatures, monitor moisture, and balance C:N ratios. It provides tools and insights for efficient compost creation, transforming organic waste into nutrient-rich soil amendments.

**Highlights:** Compost tracking, Temperature monitoring, Moisture level monitoring, C:N ratio balancing, Organic waste transformation, Nutrient-rich compost creation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Contest Queue free?

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

### Is Layers by AgriBio Systems free?

Layers by AgriBio Systems is free to download, with no in-app purchases.

### Do Contest Queue or Layers by AgriBio Systems have ads?

Neither Contest Queue nor Layers by AgriBio Systems shows ads.

### Which is updated more often, Contest Queue or Layers by AgriBio Systems?

Contest Queue ships an update every 4 days, and Layers by AgriBio Systems every 6 weeks. Most recently, Contest Queue was updated on October 4, 2026 and Layers by AgriBio Systems on September 23, 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.*