# Tesseract vs One Line

The clearest difference is update cadence: Tesseract at every 10 days against One Line's every 2 months. One Line's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Tesseract sells 3 in-app purchases, starting at $1.99 per month and One Line sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Tesseract ships an update every 10 days, One Line every 2 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Tesseract | One Line |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (110 ratings)](https://appshunter.io/ios/app/tesseract-interstellar-diary/id6599853294/reviews)** | — |
| Number of ratings | **110** | — |
| Positive reviews | 78.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Goateraction](https://appshunter.io/developer/1647805479) | [ismail kirenli](https://appshunter.io/developer/1894357775) |

## What reviewers say

### Tesseract

[App page](https://appshunter.io/ios/app/tesseract-interstellar-diary/id6599853294)

This app transforms your daily entries into a visually rich photo diary with animated themes like starlight and black holes. Add photos, organize with custom folders, and secure your memories with biometric locks. It offers journaling prompts and templates to inspire your writing.

**Highlights:** Animated visual themes, Photo attachments, Biometric entry lock, Journaling prompts, Custom folders, On This Day widget, Markdown import/export

**Features:** Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $4.99 | per year |
| Lifetime | $12.99 | one-time |

**What reviewers like**

- 🎨 Stunning, gorgeous UI/UX design
- ✨ Smooth, silky animations and interactions
- 📱 Lightweight app (only 6MB)
- 💭 Intuitive and simple to use
- 🎯 Focused, single-purpose functionality

**What reviewers complain about**

- 💰 Aggressive monetization strategy
- 🔒 Data loss issues after updates
- 🐛 Edit button crashes the app
- 📸 Photos disappear when editing entries
- 🔄 Sync issues between devices

**Reported bugs**

- Data deletion after app updates
- Journal entries disappearing after switching apps
- Edit button causing app crashes
- Photos disappearing when adding new ones
- Photos disappearing after editing entries

**Requested features**

- Customizable theme colors and backgrounds
- Additional font options (especially for Chinese)
- PDF export functionality
- iCloud sync support
- Auto-save functionality


### One Line

[App page](https://appshunter.io/ios/app/one-line-micro-journal/id6773496465)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneLine Pro Monthly | $0.99 | per month |
| OneLine Pro Yearly | $6.99 | per year |
| One Line Premium | $12.99 | one-time |


## Frequently asked questions

### Is Tesseract free?

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

### Is One Line free?

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

### Do Tesseract or One Line have ads?

Neither Tesseract nor One Line shows ads.

### Which is updated more often, Tesseract or One Line?

Tesseract ships an update every 10 days, and One Line every 2 months. Most recently, Tesseract was updated on November 8, 2026 and One Line on November 5, 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.*