# Thremark vs dapter

The clearest difference is iOS requirement: dapter at 16.4 against Thremark's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Thremark sells 4 in-app purchases, starting at $19.99 per month and dapter sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Thremark ships an update weekly, dapter every 2 weeks. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Thremark | dapter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/thremark-ai-chat-with-memory/id6760238583/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 46 MB | 65 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Konstantin Cherniatev](https://appshunter.io/developer/1883396031) | [Anuar Shaidenov](https://appshunter.io/developer/6786665450) |

## What reviewers say

### Thremark

[App page](https://appshunter.io/ios/app/thremark-ai-chat-with-memory/id6760238583)

This AI assistant remembers your personal information to provide contextually relevant answers and proactively engage you. It can generate files, search the web, and create images, all while prioritizing your privacy and integrating seamlessly with iOS.

**Highlights:** Personalized AI memory, Proactive notifications, Dynamic file generation, Multi-model AI support, Web search and summarization, Voice and image generation, Deep iOS integration

**Features:** Safari Extension, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thremark Plus | $19.99 | per month |
| Thremark Pro | $39.99 | per month |
| Plus (Annual) | $179.99 | per year |
| Pro (Annual) | $359.99 | per year |


### dapter

[App page](https://appshunter.io/ios/app/dapter-notes-that-do-math/id6786665448)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dapter Plus Monthly | $3.99 | per month |
| Dapter Plus Yearly | $19.99 | per year |
| Dapter Plus Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Thremark free?

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

### Is dapter free?

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

### Do Thremark or dapter have ads?

Neither Thremark nor dapter shows ads.

### Which is updated more often, Thremark or dapter?

Thremark ships an update weekly, and dapter every 2 weeks. Most recently, Thremark was updated on October 1, 2026 and dapter on October 15, 2026.

---

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