# docolab vs CARL Xpress

docolab and CARL Xpress are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

docolab ships an update monthly, CARL Xpress every 2 months. The most recent releases landed on September 18, 2026 and May 14, 2026 respectively.

## The numbers

| Metric | docolab | CARL Xpress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 67 MB | 23 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [docolab](https://appshunter.io/developer/1251470428) | [CARL INTERNATIONAL](https://appshunter.io/developer/1506781701) |

## What reviewers say

### docolab

[App page](https://appshunter.io/ios/app/docolab/id1251470429)

**Features:** macOS Compatibility

**In-app purchases:** none


### CARL Xpress

[App page](https://appshunter.io/ios/app/carl-xpress/id1506781702)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is docolab free?

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

### Is CARL Xpress free?

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

### Do docolab or CARL Xpress have ads?

Neither docolab nor CARL Xpress shows ads.

### Which is updated more often, docolab or CARL Xpress?

docolab ships an update monthly, and CARL Xpress every 2 months. Most recently, docolab was updated on September 18, 2026 and CARL Xpress on May 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.*