# C.SIGN vs Mountain Identifier

The clearest difference is in-app purchases: C.SIGN at none against Mountain Identifier's 2. C.SIGN also leads on update cadence (every 2 weeks vs every 5 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Mountain Identifier sells 2 in-app purchases, starting at $5.99 per 7 days. C.SIGN asks for nothing beyond the download.

C.SIGN ships an update every 2 weeks, Mountain Identifier every 5 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | C.SIGN | Mountain Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mountain-identifier-peaks/id6752865266/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 162 MB | 116 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CMC Technology and Solution Company Limited](https://appshunter.io/developer/1498575851) | [Patrick Tammaro](https://appshunter.io/developer/1539155948) |

## What reviewers say

### C.SIGN

[App page](https://appshunter.io/ios/app/csign/id6443462181)

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

**In-app purchases:** none


### Mountain Identifier

[App page](https://appshunter.io/ios/app/mountain-identifier-peaks/id6752865266)

Instantly identify mountains worldwide using AI and GPS. Discover detailed information about peaks, track your adventures, and collect personal stats. Share your discoveries with friends and enjoy a dark mode option.

**Highlights:** Instant AI mountain identification, Detailed peak profiles, Personal adventure log, Collectable stats and achievements, Social sharing capabilities, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $5.99 | per 7 days |
| Pro | $29.99 | per year |


## Frequently asked questions

### Is C.SIGN free?

C.SIGN is free to download, with no in-app purchases.

### Is Mountain Identifier free?

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

### Do C.SIGN or Mountain Identifier have ads?

Neither C.SIGN nor Mountain Identifier shows ads.

### Which is updated more often, C.SIGN or Mountain Identifier?

C.SIGN ships an update every 2 weeks, and Mountain Identifier every 5 months. Most recently, C.SIGN was updated on October 11, 2026 and Mountain Identifier on October 11, 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.*