# Feed Your Elephant Knowledge vs sound

The clearest difference is update cadence: sound at weekly against Feed Your Elephant Knowledge's fortnightly. Feed Your Elephant Knowledge's advantage is iOS requirement (11.0 vs 14.0). 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.

Feed Your Elephant Knowledge ships an update fortnightly, sound weekly. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Feed Your Elephant Knowledge | sound |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 104 MB | 28 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Feed Your Elephant](https://appshunter.io/developer/1356107396) | [Inara Technologies](https://appshunter.io/developer/1527639849) |

## What reviewers say

### Feed Your Elephant Knowledge

[App page](https://appshunter.io/ios/app/feed-your-elephant-knowledge/id1485558013)

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

**In-app purchases:** none


### sound

[App page](https://appshunter.io/ios/app/sound-smart/id6469508020)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Feed Your Elephant Knowledge free?

Feed Your Elephant Knowledge is free to download, with no in-app purchases.

### Is sound free?

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

### Do Feed Your Elephant Knowledge or sound have ads?

Neither Feed Your Elephant Knowledge nor sound shows ads.

### Which is updated more often, Feed Your Elephant Knowledge or sound?

Feed Your Elephant Knowledge ships an update fortnightly, and sound weekly. Most recently, Feed Your Elephant Knowledge was updated on October 11, 2026 and sound on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*