# Chat with o1 vs TechStack by JSP

The clearest difference is device support: TechStack by JSP at 3 against Chat with o1's 1. TechStack by JSP also leads on iOS requirement (14.0.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Chat with o1 sells 4 in-app purchases, starting at $19.99 per 7 days and TechStack by JSP sells 9 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Chat with o1 | TechStack by JSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/chat-with-o1-chatbot/id6739226622/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Daily |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 80 MB |
| Requires iOS | 17.0 | **14.0.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Sozzled LLC](https://appshunter.io/developer/1715133421) | [Daryl Marcano](https://appshunter.io/developer/1688013135) |

## What reviewers say

### Chat with o1

[App page](https://appshunter.io/ios/app/chat-with-o1-chatbot/id6739226622)

An AI chatbot powered by OpenAI's o1 series models. It offers advanced reasoning and problem-solving capabilities, particularly in scientific and technical fields. Download this intelligent assistant for free to experience its precise and thoughtful responses.

**Highlights:** Powered by OpenAI's o1 models, Advanced reasoning capabilities, Excels in scientific/technical challenges, Intelligent assistant, PhD-level precision

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Weekly | $19.99 | per 7 days |
| 10,000 Tokens | $2.99 | one-time |
| 50,000 Tokens | $9.99 | one-time |
| 150,000 Tokens | $19.99 | one-time |


### TechStack by JSP

[App page](https://appshunter.io/ios/app/techstack-by-jsp/id6739455072)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TechStack (United States) | $9.99 | per month |
| TechStack (United States) | $24.99 | per 3 months |
| TechStack (United States) | $44.99 | per 6 months |
| TechStack (United States) | $49.99 | per 3 months |
| TechStack (United States) | $74.99 | per year |
| TechStack (United States) | $89.99 | per 6 months |
| TechStack (United States) | $124.99 | per 3 months |
| TechStack (United States) | $239.99 | per 6 months |
| TechStack (United States) | $449.99 | per year |


## Frequently asked questions

### Is Chat with o1 free?

Chat with o1 is free to download, with in-app purchases available.

### Is TechStack by JSP free?

TechStack by JSP is free to download, with in-app purchases available.

### Do Chat with o1 or TechStack by JSP have ads?

Neither Chat with o1 nor TechStack by JSP shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*