# Wave Library vs E

The clearest difference is update cadence: E at weekly against Wave Library's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Wave Library sells 1 one-off in-app purchase and E sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Wave Library ships an update fortnightly, E weekly. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Wave Library | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 282 MB | 54 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bright Kids Private Limited](https://appshunter.io/developer/1604600912) | [Rajan Saud](https://appshunter.io/developer/1662306905) |

## What reviewers say

### Wave Library

[App page](https://appshunter.io/ios/app/wave-library/id6769728631)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wave Institute Admission | $79.99 | one-time |


### E

[App page](https://appshunter.io/ios/app/e-chaitanya/id6771364363)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coins 2500 | $24.99 | one-time |
| Coins 5000 | $49.99 | one-time |
| Coins 10000 | $99.99 | one-time |
| Coins 15000 | $150.00 | one-time |


## Frequently asked questions

### Is Wave Library free?

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

### Is E free?

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

### Do Wave Library or E have ads?

Neither Wave Library nor E shows ads.

### Which is updated more often, Wave Library or E?

Wave Library ships an update fortnightly, and E weekly. Most recently, Wave Library was updated on October 6, 2026 and E on October 5, 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.*