# Calki vs DocShelf

The clearest difference is in-app purchases: DocShelf at none against Calki's 3. DocShelf also leads on ads (none vs shown) and update cadence (every 2 days vs fortnightly). On price and device support there is nothing between them.

Both are free to download. Calki sells 3 in-app purchases, starting at $0.99 per month. DocShelf asks for nothing beyond the download.

Calki ships an update fortnightly, DocShelf every 2 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Calki | DocShelf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/calki-scanner-calculator/id6747059181/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 52 MB | 31 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vimal Parthan](https://appshunter.io/developer/1819662283) | [Sunil Mulgund](https://appshunter.io/developer/1896692548) |

## What reviewers say

### Calki

[App page](https://appshunter.io/ios/app/calki-scanner-calculator/id6747059181)

This app combines a powerful camera number scanner, a full-featured unit converter, and a beautifully designed calculator. It allows you to scan numbers from documents, convert units across various categories, and perform calculations with live previews and advanced history.

**Highlights:** Camera number scanner (OCR), Unit converter with 12 categories, Smart calculator with live preview, Advanced calculation history, Customizable themes and fonts, Ad-free experience

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calki Pro Monthly | $0.99 | per month |
| Calki Pro Yearly | $2.99 | per year |
| Calki Pro Lifetime | $5.99 | one-time |


### DocShelf

[App page](https://appshunter.io/ios/app/docshelf-documents-simplified/id6770281835)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calki free?

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

### Is DocShelf free?

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

### Do Calki or DocShelf have ads?

Calki shows ads; DocShelf does not.

### Which is updated more often, Calki or DocShelf?

Calki ships an update fortnightly, and DocShelf every 2 days. Most recently, Calki was updated on October 24, 2026 and DocShelf on October 12, 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.*