# Formula Conversion vs ThinkBetter

The clearest difference is update cadence: ThinkBetter at monthly against Formula Conversion's every 26 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Formula Conversion sells 1 one-off in-app purchase and ThinkBetter sells 9 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Formula Conversion ships an update every 26 months, ThinkBetter monthly. The most recent releases landed on June 12, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Formula Conversion | ThinkBetter |
| --- | --- | --- |
| 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 | Every 26 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 49 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janek Soomets](https://appshunter.io/developer/1315295062) | [Bits of WOW](https://appshunter.io/developer/1776170955) |

## What reviewers say

### Formula Conversion

[App page](https://appshunter.io/ios/app/formula-conversion/id1586539965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Formula Conversion | $3.99 | one-time |


### 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 |


## Frequently asked questions

### Is Formula Conversion free?

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

### Is ThinkBetter free?

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

### Do Formula Conversion or ThinkBetter have ads?

Neither Formula Conversion nor ThinkBetter shows ads.

### Which is updated more often, Formula Conversion or ThinkBetter?

Formula Conversion ships an update every 26 months, and ThinkBetter monthly. Most recently, Formula Conversion was updated on June 12, 2026 and ThinkBetter on September 21, 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.*