# MK Congress vs Redstring

The clearest difference is in-app purchases: MK Congress at none against Redstring's 3. MK Congress also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Redstring sells 3 in-app purchases, starting at $2.99 per month. MK Congress asks for nothing beyond the download.

MK Congress ships an update every 5 days, Redstring every 9 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MK Congress | Redstring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/redstring-ancient-mystery-map/id6790043505/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 57 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [LetzFair](https://appshunter.io/developer/1590302077) | [Michael Dube](https://appshunter.io/developer/1858655640) |

## What reviewers say

### MK Congress

[App page](https://appshunter.io/ios/app/mk-congress/id6754776192)

**Features:** macOS Compatibility

**In-app purchases:** none


### Redstring

[App page](https://appshunter.io/ios/app/redstring-ancient-mystery-map/id6790043505)

Explore a 3D globe featuring 305 real case files on ancient ruins, deep mysteries, and unexplained phenomena. Each location offers a brief overview and links to further research, presented with clear evidence labeling for informed exploration.

**Highlights:** Interactive 3D globe with 305 case files, Daily new file declassification, Meta-mystery 'Case Zero', Curated 'Threads' for guided exploration, Personal evidence wall ('The Board'), Offline playback of downloaded content

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clearance — Monthly | $2.99 | per month |
| Clearance — Annual | $14.99 | per year |
| Clearance — Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is MK Congress free?

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

### Is Redstring free?

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

### Do MK Congress or Redstring have ads?

Redstring shows ads; MK Congress does not.

### Which is updated more often, MK Congress or Redstring?

MK Congress ships an update every 5 days, and Redstring every 9 days. Most recently, MK Congress was updated on October 28, 2026 and Redstring on October 31, 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.*