# GeoLog Field vs Second Brain

The clearest difference is iOS requirement: GeoLog Field at 14.0 against Second Brain's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. GeoLog Field sells 2 in-app purchases, starting at $4.99 per month and Second Brain sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

GeoLog Field ships an update every 4 days, Second Brain every 5 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | GeoLog Field | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Size | 40 MB | 55 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BERK AKDAG](https://appshunter.io/developer/6782321967) | [Terra Innovations](https://appshunter.io/developer/1789492814) |

## What reviewers say

### GeoLog Field

[App page](https://appshunter.io/ios/app/geolog-field/id6785253813)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GeoLog Field Monthly | $4.99 | per month |
| GeoLog Field Yearly | $49.99 | per year |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-ai-assistant/id6792532203)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Monthly | $29.99 | per month |


## Frequently asked questions

### Is GeoLog Field free?

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

### Is Second Brain free?

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

### Do GeoLog Field or Second Brain have ads?

Neither GeoLog Field nor Second Brain shows ads.

### Which is updated more often, GeoLog Field or Second Brain?

GeoLog Field ships an update every 4 days, and Second Brain every 5 days. Most recently, GeoLog Field was updated on October 31, 2026 and Second Brain on November 10, 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.*