# Thought Tamer vs Theo

The clearest difference is ads: Thought Tamer at none against Theo's shown. Thought Tamer also leads on device support (3 vs 1). Theo's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Thought Tamer sells 5 in-app purchases, starting at $6.99 per 7 days and Theo sells 9 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Thought Tamer ships an update every 5 weeks, Theo every 2 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Thought Tamer | Theo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (16 ratings)](https://appshunter.io/ios/app/theo-stop-overthinking/id6759104892/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 59 MB | 42 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Foreff](https://appshunter.io/developer/1688510818) | [Kilby Labs Inc.](https://appshunter.io/developer/6778542781) |

## What reviewers say

### Thought Tamer

[App page](https://appshunter.io/ios/app/thought-tamer-stop-stalling/id6739600256)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Weekly | $6.99 | per 7 days |
| 1 Monthly | $14.99 | per month |
| 3 Monthly | $49.99 | per 3 months |
| 1 Yearly | $69.99 | per year |
| Lifetime Premium | $199.99 | one-time |


### Theo

[App page](https://appshunter.io/ios/app/theo-stop-overthinking/id6759104892)

This app helps you stop overthinking by guiding you through a structured analysis of your worries and decisions. It uses evidence-based reasoning to show you the actual probabilities of your concerns, replacing feelings with clarity.

**Highlights:** Structured journaling for worries, Evidence-based probability analysis, Interactive what-if sliders, Sensitivity analysis of evidence, Private thinking journal, Bayesian reasoning framework

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theo Plus - Weekly Subscription | $4.99 | per 7 days |
| Theo Plus - Monthly Subscription | $9.99 | per month |
| Theo Plus - 3 Month Subscription | $12.99 | per 3 months |
| Theo Plus - Semiannual Subscription | $39.99 | per 6 months |
| Theo Plus - Annual Subscription | $39.99 | per year |
| Theo Plus - Semiannual Subscription | $39.99 | per 6 months |
| Theo Plus - Semiannual Subscription | $59.99 | per 6 months |
| Theo Plus - Annual Subscription | $69.99 | per year |
| Theo Plus - Annual Subscription | $99.99 | per year |


## Frequently asked questions

### Is Thought Tamer free?

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

### Is Theo free?

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

### Do Thought Tamer or Theo have ads?

Theo shows ads; Thought Tamer does not.

### Which is updated more often, Thought Tamer or Theo?

Thought Tamer ships an update every 5 weeks, and Theo every 2 weeks. Most recently, Thought Tamer was updated on October 24, 2026 and Theo on October 20, 2026.

---

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