# IASS vs LIBF

The clearest difference is update cadence: LIBF at every 10 days against IASS's every 6 weeks. LIBF also leads on 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. Neither carries in-app purchases, so what you see is what you pay.

IASS ships an update every 6 weeks, LIBF every 10 days. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | IASS | LIBF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Size | 70 MB | 127 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [INTERNATIONAL ASSOCIATION FOR SCIENTIFIC SPIRITUALISM](https://appshunter.io/developer/1556193161) | [Lohana International Business Forum](https://appshunter.io/developer/1711583370) |

## What reviewers say

### IASS

[App page](https://appshunter.io/ios/app/iass/id1459625250)

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

**In-app purchases:** none


### LIBF

[App page](https://appshunter.io/ios/app/libf/id6469113592)

**In-app purchases:** none


## Frequently asked questions

### Is IASS free?

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

### Is LIBF free?

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

### Do IASS or LIBF have ads?

Neither IASS nor LIBF shows ads.

### Which is updated more often, IASS or LIBF?

IASS ships an update every 6 weeks, and LIBF every 10 days. Most recently, IASS was updated on September 28, 2026 and LIBF on October 9, 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.*