# Idle Chest vs BioDecoder

The clearest difference is ads: BioDecoder at none against Idle Chest's shown. Idle Chest's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.5). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Idle Chest sells 5 one-off in-app purchases and BioDecoder sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Idle Chest ships an update every 10 days, BioDecoder fortnightly. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Idle Chest | BioDecoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (109 ratings)](https://appshunter.io/ios/app/idle-chest/id6744372975/reviews)** | — |
| Number of ratings | **109** | — |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 192 MB | 2 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Thomas Gunzburger](https://appshunter.io/developer/1807389356) | [Richard Magney](https://appshunter.io/developer/1792734341) |

## What reviewers say

### Idle Chest

[App page](https://appshunter.io/ios/app/idle-chest/id6744372975)

Embark on a treasure-hunting adventure where every click earns rewards. Upgrade your skills, collect and enhance equipment, and unlock unique abilities. Discover the secrets of this world through engaging gameplay and an addictive incremental experience.

**Highlights:** Open various chests, Loot and upgrade equipment, Buy skill upgrades, Unlock unique skills, Discover game story

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Underwater Background Skin | $3.99 | one-time |
| Underwater Chests Skin | $3.99 | one-time |
| Underwater Acolytes Skin | $3.99 | one-time |
| No Ads | $3.99 | one-time |
| Underwater Complete Skins Pack | $8.99 | one-time |

**What reviewers like**

- 👍 Fun short idle clicker
- 👍 Consistent theme
- 👍 Enjoyable experience
- 👍 Minimalistic but rewarding grind
- 💰 Non-intrusive ads

**What reviewers complain about**

- 🐛 Game breaking bug with 'Chosen One' minion
- 🔍 Difficult to compare tap damage to acolyte damage
- 🔍 Some explanations could be improved
- 🔍 Slightly linear progression

**Reported bugs**

- Progress resets or reverts
- Minions not working after equipping 'Chosen One'

**Requested features**

- Dark mode option
- Better UI for comparing damage sources


### BioDecoder

[App page](https://appshunter.io/ios/app/biodecoder/id6749856010)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $8.99 | one-time |


## Frequently asked questions

### Is Idle Chest free?

Idle Chest is free to download, with in-app purchases available.

### Is BioDecoder free?

BioDecoder is free to download, with in-app purchases available.

### Do Idle Chest or BioDecoder have ads?

Idle Chest shows ads; BioDecoder does not.

### Which is updated more often, Idle Chest or BioDecoder?

Idle Chest ships an update every 10 days, and BioDecoder fortnightly. Most recently, Idle Chest was updated on October 11, 2026 and BioDecoder on October 14, 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.*