# monolog vs Proja AI

The clearest difference is update cadence: monolog at every 6 days against Proja AI's every 4 months. Proja AI's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. monolog sells 6 in-app purchases, starting at $2.99 per month and Proja AI sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

monolog ships an update every 6 days, Proja AI every 4 months. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | monolog | Proja AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 100 MB | 56 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TaeJin Kim](https://appshunter.io/developer/310880581) | [Craig Simons](https://appshunter.io/developer/1863639202) |

## What reviewers say

### monolog

[App page](https://appshunter.io/ios/app/monolog-your-second-brain/id6751247984)

Effortlessly capture thoughts as they come, without the hassle of titles or categories. AI automatically organizes your entries with tags and timing, making retrieval quick and intuitive. Revisit your past ideas and inspirations with a tool that prioritizes memory.

**Highlights:** Frictionless recording of text, photos, links, and voice, AI-powered automatic tagging and organization, Quick retrieval with tags and keywords, Local-first sync for offline use, Strong privacy with data protection for AI features, Records that prompt future action

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| monolog PLUS - Monthly | $2.99 | per month |
| monolog PRO - Monthly | $4.99 | per month |
| monolog PRIME - Monthly | $9.99 | per month |
| monolog PLUS - Yearly | $29.99 | per year |
| monolog PRO - Yearly | $49.99 | per year |
| monolog PRIME - Yearly | $99.99 | per year |


### Proja AI

[App page](https://appshunter.io/ios/app/proja-ai/id6756915749)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | one-time |
| Team Monthly | $5.99 | one-time |
| Pro Yearly | $29.99 | one-time |
| Team Yearly | $49.99 | one-time |


## Frequently asked questions

### Is monolog free?

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

### Is Proja AI free?

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

### Do monolog or Proja AI have ads?

Neither monolog nor Proja AI shows ads.

### Which is updated more often, monolog or Proja AI?

monolog ships an update every 6 days, and Proja AI every 4 months. Most recently, monolog was updated on November 5, 2026 and Proja AI on October 30, 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.*