# Detect & Solve vs Thinkdown

The clearest difference is in-app purchases: Detect & Solve at none against Thinkdown's 2. Detect & Solve also leads on iOS requirement (17.0 vs 26.0). Thinkdown's advantage is update cadence (every 4 days vs every 3 weeks) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Thinkdown sells 2 in-app purchases, starting at $8.99 per month. Detect & Solve asks for nothing beyond the download.

Detect & Solve ships an update every 3 weeks, Thinkdown every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Detect & Solve | Thinkdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/thinkdown-ai-voice-journal/id6823237700/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 40 MB | 8 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Pedro Lanhoso](https://appshunter.io/developer/1821504768) | [HONGQUAN XIE](https://appshunter.io/developer/6823237702) |

## What reviewers say

### Detect & Solve

[App page](https://appshunter.io/ios/app/detect-and-solve/id6747453004)

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

**In-app purchases:** none


### Thinkdown

[App page](https://appshunter.io/ios/app/thinkdown-ai-voice-journal/id6823237700)

This app transforms spoken thoughts into clean, organized notes. It offers various writing styles, learns your vocabulary, and syncs across devices. Enjoy a private, ad-free experience with offline access.

**Highlights:** Voice-to-text transcription, Customizable note styles, Vocabulary learning, Cross-device syncing, Offline access, Folder and tag organization

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thinkdown Pro Monthly | $8.99 | per month |
| Thinkdown Pro Yearly | $59.99 | per year |


## Frequently asked questions

### Is Detect & Solve free?

Detect & Solve is free to download, with no in-app purchases.

### Is Thinkdown free?

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

### Do Detect & Solve or Thinkdown have ads?

Neither Detect & Solve nor Thinkdown shows ads.

### Which is updated more often, Detect & Solve or Thinkdown?

Detect & Solve ships an update every 3 weeks, and Thinkdown every 4 days. Most recently, Detect & Solve was updated on October 28, 2026 and Thinkdown on October 31, 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.*