# Lightmark vs FluidTodo

The clearest difference is in-app purchases: FluidTodo at none against Lightmark's 3. FluidTodo also leads on update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lightmark sells 3 in-app purchases, starting at $1.99 per month. FluidTodo asks for nothing beyond the download.

Lightmark ships an update every 3 weeks, FluidTodo every 6 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Lightmark | FluidTodo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (9 ratings)](https://appshunter.io/ios/app/lightmarkprivate-diary-and-time/id6740918794/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 7 MB |
| Requires iOS | 18.0 | **17** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [璐 秦](https://appshunter.io/developer/1526979591) | [潇逸 李](https://appshunter.io/developer/1517198383) |

## What reviewers say

### Lightmark

[App page](https://appshunter.io/ios/app/lightmarkprivate-diary-and-time/id6740918794)

This app encourages honest self-reflection by allowing users to record thoughts, emotions, and memories without the ability to edit entries after submission. It supports text, voice, photos, and videos, offering a multi-sensory journaling experience. A unique visual timeline helps users see their journey over time.

**Highlights:** Uneditable entries, Text, voice, photo, and video recording, Tag system for organization, Annual 'Lightmap' visualization, Daily timeline archive, Minimalist interface

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $12.99 | per year |
| Lifetime | $14.99 | one-time |


### FluidTodo

[App page](https://appshunter.io/ios/app/fluidtodo/id6757600688)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lightmark free?

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

### Is FluidTodo free?

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

### Do Lightmark or FluidTodo have ads?

Neither Lightmark nor FluidTodo shows ads.

### Which is updated more often, Lightmark or FluidTodo?

Lightmark ships an update every 3 weeks, and FluidTodo every 6 days. Most recently, Lightmark was updated on October 24, 2026 and FluidTodo on October 15, 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.*