# CALC by Webb Labs vs AIChatDoo

The clearest difference is in-app purchases: CALC by Webb Labs at none against AIChatDoo's 3. CALC by Webb Labs also leads on update cadence (every 2 days vs every 5 days). AIChatDoo's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AIChatDoo sells 3 in-app purchases, starting at $3.99 per 7 days. CALC by Webb Labs asks for nothing beyond the download.

CALC by Webb Labs ships an update every 2 days, AIChatDoo every 5 days. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CALC by Webb Labs | AIChatDoo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 5 days |
| Size | 179 MB | 9 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Webb Labs Ltd.](https://appshunter.io/developer/1888390157) | [NovaMind AI](https://appshunter.io/developer/1837941195) |

## What reviewers say

### CALC by Webb Labs

[App page](https://appshunter.io/ios/app/calc-by-webb-labs/id6761248737)

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

**In-app purchases:** none


### AIChatDoo

[App page](https://appshunter.io/ios/app/aichatdoo-write-think-create/id6777403201)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| week membership | $3.99 | per 7 days |
| year membership | $14.99 | per year |
| lifetime membership | $19.99 | one-time |


## Frequently asked questions

### Is CALC by Webb Labs free?

CALC by Webb Labs is free to download, with no in-app purchases.

### Is AIChatDoo free?

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

### Do CALC by Webb Labs or AIChatDoo have ads?

CALC by Webb Labs shows ads; AIChatDoo does not.

### Which is updated more often, CALC by Webb Labs or AIChatDoo?

CALC by Webb Labs ships an update every 2 days, and AIChatDoo every 5 days. Most recently, CALC by Webb Labs was updated on October 18, 2026 and AIChatDoo on October 24, 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.*