# ThinkBetter vs Principles Personal Discovery

ThinkBetter and Principles Personal Discovery are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. ThinkBetter sells 9 in-app purchases, starting at $0.99 per month and Principles Personal Discovery sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ThinkBetter ships an update monthly, Principles Personal Discovery every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ThinkBetter | Principles Personal Discovery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/thinkbetter-critical-thinking/id6459831884/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 57 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bits of WOW](https://appshunter.io/developer/1776170955) | [TAN HAI LONG PHUNG](https://appshunter.io/developer/6777108773) |

## What reviewers say

### ThinkBetter

[App page](https://appshunter.io/ios/app/thinkbetter-critical-thinking/id6459831884)

Enhance your decision-making and understanding of the world by learning about cognitive biases and mental models. This app offers weekly insights, real-life examples, and quizzes to help you master these concepts for personal and professional growth.

**Highlights:** Weekly "brain concept" unlocked, Real-life examples and applications, Daily life decoder, Gorgeous illustrations, Interactive training program, Path selection for goals, Understanding quizzes, Podcast-style audio narration

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Special Offer Subscription | $0.99 | per month |
| Full Access Super Promo | $0.99 | per month |
| Monthly Subscription | $1.99 | per month |
| Full Access Super Promo | $4.99 | one-time |
| ThinkBetter Plus | $5.99 | one-time |
| Full Access Special Offer | $7.99 | one-time |
| ThinkBetter Plus | $7.99 | one-time |
| Full Access | $9.99 | one-time |
| ThinkBetter Plus | $9.99 | one-time |


### Principles Personal Discovery

[App page](https://appshunter.io/ios/app/principles-personal-discovery/id6789200479)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Palace Report - Friends | $0.99 | one-time |
| Palace Report - Parents | $0.99 | one-time |
| Palace Report - Spouse | $0.99 | one-time |
| Palace Report - Siblings | $0.99 | one-time |
| Palace Report - Health | $0.99 | one-time |
| Palace Report - Children | $0.99 | one-time |
| Palace Report - Travel | $0.99 | one-time |
| Palace Report - Blessing | $0.99 | one-time |
| Annual Reading | $0.99 | one-time |
| Connection Report | $0.99 | one-time |


## Frequently asked questions

### Is ThinkBetter free?

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

### Is Principles Personal Discovery free?

Principles Personal Discovery is free to download, with in-app purchases available.

### Do ThinkBetter or Principles Personal Discovery have ads?

Neither ThinkBetter nor Principles Personal Discovery shows ads.

### Which is updated more often, ThinkBetter or Principles Personal Discovery?

ThinkBetter ships an update monthly, and Principles Personal Discovery every 3 weeks. Most recently, ThinkBetter was updated on October 24, 2026 and Principles Personal Discovery on October 25, 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.*