# Discovery World Hidden Object vs Terra Merge

The clearest difference is ads: Discovery World Hidden Object at none against Terra Merge's shown. Terra Merge's advantage is update cadence (weekly vs every 63 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Discovery World Hidden Object ships an update every 63 months, Terra Merge weekly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Discovery World Hidden Object | Terra Merge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/terra-merge/id6446323733/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 63 months | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 125 MB | 228 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dipak Keshariya](https://appshunter.io/developer/654456671) | [Ezgi Evrensel](https://appshunter.io/developer/1664776677) |

## What reviewers say

### Discovery World Hidden Object

[App page](https://appshunter.io/ios/app/discovery-world-hidden-object/id1035583253)

**Features:** macOS Compatibility

**In-app purchases:** none


### Terra Merge

[App page](https://appshunter.io/ios/app/terra-merge/id6446323733)

A merge-3 puzzle game focused on planetary terraforming. Players gather resources, unlock new worlds, and guide humanity's cosmic expansion.

**Highlights:** Merge-3 gameplay, Planetary terraforming, Resource gathering, Unlock new planets, Cosmic exploration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Discovery World Hidden Object free?

Discovery World Hidden Object is free to download, with no in-app purchases.

### Is Terra Merge free?

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

### Do Discovery World Hidden Object or Terra Merge have ads?

Terra Merge shows ads; Discovery World Hidden Object does not.

### Which is updated more often, Discovery World Hidden Object or Terra Merge?

Discovery World Hidden Object ships an update every 63 months, and Terra Merge weekly. Most recently, Discovery World Hidden Object was updated on November 6, 2026 and Terra Merge on November 3, 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.*