# Monolog vs Kellno

The clearest difference is in-app purchases: Kellno at none against Monolog's 3. Kellno also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

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

Monolog ships an update monthly, Kellno every 5 weeks. The most recent releases landed on October 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Monolog | Kellno |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (23 ratings)](https://appshunter.io/ios/app/monolog-minimalist-notes/id1572787859/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 65.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 59 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [澍 王](https://appshunter.io/developer/1556788692) | [Muhammad Shariq Ajmal](https://appshunter.io/developer/6778975160) |

## What reviewers say

### Monolog

[App page](https://appshunter.io/ios/app/monolog-minimalist-notes/id1572787859)

This app functions as a knowledge treasury and creative toolkit, featuring bidirectional linking to create an interconnected web of ideas. It offers hierarchical tagging for structured organization, a spaced repetition system for efficient review, and panoramic statistics to visualize your learning journey. Data is securely stored using iCloud for privacy and continuity.

**Highlights:** Bidirectional linking, Hierarchical tagging, Spaced repetition review, Learning statistics, iCloud data storage

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $1.99 | per month |
| Annual plan | $14.99 | per year |
| Lifetime Plan | $49.99 | one-time |


### Kellno

[App page](https://appshunter.io/ios/app/kellno/id6778975158)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Monolog free?

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

### Is Kellno free?

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

### Do Monolog or Kellno have ads?

Neither Monolog nor Kellno shows ads.

### Which is updated more often, Monolog or Kellno?

Monolog ships an update monthly, and Kellno every 5 weeks. Most recently, Monolog was updated on October 17, 2026 and Kellno on September 13, 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.*