# Liber vs SPHERE AI

The clearest difference is update cadence: SPHERE AI at daily against Liber's every 4 days. SPHERE AI also leads on iOS requirement (15.6 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Liber sells 6 in-app purchases, starting at $9.49 per month and SPHERE AI sells 1 in-app purchase, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Liber ships an update every 4 days, SPHERE AI daily. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Liber | SPHERE AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Daily** |
| Size | 37 MB | 175 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Liber Srl](https://appshunter.io/developer/1536758186) | [SPHERE AI L.L.C](https://appshunter.io/developer/1808351483) |

## What reviewers say

### Liber

[App page](https://appshunter.io/ios/app/liber/id1600934241)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.49 | per month |
| Monthly | $19.99 | per month |
| 3 months | $22.49 | per 3 months |
| 6 months | $32.99 | per 6 months |
| Quarterly | $47.99 | per 3 months |
| Semi-Annual | $95.99 | per 6 months |


### SPHERE AI

[App page](https://appshunter.io/ios/app/sphere-ai/id6744594865)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPHERE Plus | $19.99 | per month |


## Frequently asked questions

### Is Liber free?

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

### Is SPHERE AI free?

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

### Do Liber or SPHERE AI have ads?

Neither Liber nor SPHERE AI shows ads.

### Which is updated more often, Liber or SPHERE AI?

Liber ships an update every 4 days, and SPHERE AI daily. Most recently, Liber was updated on October 14, 2026 and SPHERE AI on October 7, 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.*