# Aduna vs Thoughts by OPTEN

The clearest difference is update cadence: Thoughts by OPTEN at every 9 days against Aduna's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Aduna ships an update every 2 months, Thoughts by OPTEN every 9 days. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Aduna | Thoughts by OPTEN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thoughts-by-opten/id6590626917/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | — | Free |
| Size | 125 MB | 38 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aduna Software AG](https://appshunter.io/developer/1171640849) | [OPTEN AG](https://appshunter.io/developer/1478298365) |

## What reviewers say

### Aduna

[App page](https://appshunter.io/ios/app/aduna/id1514790892)

**Features:** macOS Compatibility

**In-app purchases:** none


### Thoughts by OPTEN

[App page](https://appshunter.io/ios/app/thoughts-by-opten/id6590626917)

Effortlessly transform spoken thoughts into text using advanced AI. This tool ensures you never miss an idea, even when you're on the move, by converting voice notes into written messages sent directly to your email.

**Highlights:** Capture ideas quickly, AI voice conversion, Send directly to email, Minimize driving distractions, Safe and efficient idea capture

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aduna free?

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

### Is Thoughts by OPTEN free?

Thoughts by OPTEN is free to download, with no in-app purchases.

### Do Aduna or Thoughts by OPTEN have ads?

Neither Aduna nor Thoughts by OPTEN shows ads.

### Which is updated more often, Aduna or Thoughts by OPTEN?

Aduna ships an update every 2 months, and Thoughts by OPTEN every 9 days. Most recently, Aduna was updated on October 27, 2026 and Thoughts by OPTEN on November 4, 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.*