# Arch Calendar vs ThoughtsLeft

The clearest difference is review sentiment: Arch Calendar at 77% against ThoughtsLeft's 50%. Arch Calendar also leads on monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Arch Calendar sells 2 in-app purchases, starting at $6.00 per month and ThoughtsLeft sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Arch Calendar ships an update every 8 days, ThoughtsLeft every 11 days. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Arch Calendar | ThoughtsLeft |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/thoughtsleft-brain-dump/id6756787428/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **76.9% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 11 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 95 MB | 46 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MOBA Incorporated](https://appshunter.io/developer/1823577996) | [Jayasrinivasan Varadharajan](https://appshunter.io/developer/1862804917) |

## What reviewers say

### Arch Calendar

[App page](https://appshunter.io/ios/app/arch-calendar-time-blocking/id6753331558)

This minimal calendar app combines an inbox for tasks and ideas with a planning calendar. Seamlessly capture thoughts and drag them onto time blocks to organize your day and enhance focus.

**Highlights:** Quick task and idea capture, Drag-and-drop time blocking, Organize work by Smart Spaces, Unified inbox and calendar, Minimalist interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $6.00 | per month |
| Yearly Plan | $48.00 | per year |


### ThoughtsLeft

[App page](https://appshunter.io/ios/app/thoughtsleft-brain-dump/id6756787428)

Capture your fleeting thoughts, ideas, and worries quickly through typing or voice. Organize them into tasks or notes, or simply let them go. Gain insights into your thinking patterns and maintain mental clarity.

**Highlights:** Instant thought capture (type or voice), Organize thoughts with swipe gestures, Spoken Thought for hands-free capture, Time-based task manager, Notes repository, Activity insights, Optional Pro upgrade for advanced features

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thoughts Left PRO | $9.99 | per year |
| Thoughts Left Pro | $24.99 | one-time |


## Frequently asked questions

### Is Arch Calendar free?

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

### Is ThoughtsLeft free?

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

### Do Arch Calendar or ThoughtsLeft have ads?

Neither Arch Calendar nor ThoughtsLeft shows ads.

### Which is updated more often, Arch Calendar or ThoughtsLeft?

Arch Calendar ships an update every 8 days, and ThoughtsLeft every 11 days. Most recently, Arch Calendar was updated on September 23, 2026 and ThoughtsLeft on September 12, 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.*