# BioLabCalculators vs Ai Chat Plus Open Conversation

The clearest difference is price: Ai Chat Plus Open Conversation at Free against BioLabCalculators's $6.99. Ai Chat Plus Open Conversation also leads on update cadence (every 3 months vs every 10 months). BioLabCalculators's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Ai Chat Plus Open Conversation is free to download; BioLabCalculators costs $6.99 up front. Ai Chat Plus Open Conversation sells 2 in-app purchases, starting at $5.99 per 7 days. BioLabCalculators asks for nothing beyond the download.

BioLabCalculators ships an update every 10 months, Ai Chat Plus Open Conversation every 3 months. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BioLabCalculators | Ai Chat Plus Open Conversation |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | — | **[4.6 (19 ratings)](https://appshunter.io/ios/app/ai-chat-plus-open-conversation/id6453888200/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 15 MB |
| Requires iOS | 14.0 | **13.1** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Valeriy Tarasov](https://appshunter.io/developer/1470827581) | [Ryabov Vladislav](https://appshunter.io/developer/797052222) |

## What reviewers say

### BioLabCalculators

[App page](https://appshunter.io/ios/app/biolabcalculators/id1480948459)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ai Chat Plus Open Conversation

[App page](https://appshunter.io/ios/app/ai-chat-plus-open-conversation/id6453888200)

Engage in advanced AI conversations using GPT-3.5 and GPT-4 models. Get academic help, business advice, entertainment, or emotional support. Your chats are kept private and are not used for AI training.

**Highlights:** GPT-4 and GPT-3.5 models, Academic assistance, Professional guidance, Daily life advice, Device synchronization, Absolute privacy

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ai Chat Plus | $5.99 | per 7 days |
| Ai Chat Plus One Month | $19.99 | per month |


## Frequently asked questions

### Is BioLabCalculators free?

BioLabCalculators costs $6.99, with no in-app purchases.

### Is Ai Chat Plus Open Conversation free?

Ai Chat Plus Open Conversation is free to download, with in-app purchases available.

### Do BioLabCalculators or Ai Chat Plus Open Conversation have ads?

Neither BioLabCalculators nor Ai Chat Plus Open Conversation shows ads.

### Which is updated more often, BioLabCalculators or Ai Chat Plus Open Conversation?

BioLabCalculators ships an update every 10 months, and Ai Chat Plus Open Conversation every 3 months. Most recently, BioLabCalculators was updated on October 15, 2026 and Ai Chat Plus Open Conversation 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.*