# COT Z vs ThesisOS

The clearest difference is in-app purchases: ThesisOS at none against COT Z's 1. COT Z's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. COT Z sells 1 in-app purchase, starting at $4.99 per month. ThesisOS asks for nothing beyond the download.

COT Z ships an update every 3 weeks, ThesisOS fortnightly. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | COT Z | ThesisOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/thesisos/id6761431040/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 39 MB | 3 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Ricardo Dacosta](https://appshunter.io/developer/1500340235) | [ThesisOS LLC](https://appshunter.io/developer/1889586145) |

## What reviewers say

### COT Z

[App page](https://appshunter.io/ios/app/cot-z-score/id6755860112)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| COT- ZScore - Monthly Subscription | $4.99 | per month |


### ThesisOS

[App page](https://appshunter.io/ios/app/thesisos/id6761431040)

This app allows users to engage with prediction markets by identifying top traders and automatically mirroring their positions. It offers cross-platform synchronization, smart notifications, and simplified trade execution, eliminating the need for constant market monitoring.

**Highlights:** Discover high-performing traders, Automatically mirror positions, Cross-platform fidelity, Intelligent alerts, Effortless execution

**In-app purchases:** none


## Frequently asked questions

### Is COT Z free?

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

### Is ThesisOS free?

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

### Do COT Z or ThesisOS have ads?

Neither COT Z nor ThesisOS shows ads.

### Which is updated more often, COT Z or ThesisOS?

COT Z ships an update every 3 weeks, and ThesisOS fortnightly. Most recently, COT Z was updated on October 16, 2026 and ThesisOS on October 11, 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.*