# Biorhythm 365days vs E

The clearest difference is in-app purchases: E at none against Biorhythm 365days's 1. E also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). Biorhythm 365days's advantage is update cadence (every 2 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Biorhythm 365days sells 1 one-off in-app purchase. E asks for nothing beyond the download.

Biorhythm 365days ships an update every 2 weeks, E every 3 months. The most recent releases landed on July 17, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Biorhythm 365days | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Size | 24 MB | 21 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [akira ohmachi](https://appshunter.io/developer/1338624340) | [Ulaanbaatar Railway, Mongolian-Russian JVC](https://appshunter.io/developer/1273656008) |

## What reviewers say

### Biorhythm 365days

[App page](https://appshunter.io/ios/app/biorhythm-365days/id1562706194)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### E

[App page](https://appshunter.io/ios/app/e-normative/id6470155996)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biorhythm 365days free?

Biorhythm 365days is free to download, with in-app purchases available.

### Is E free?

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

### Do Biorhythm 365days or E have ads?

Biorhythm 365days shows ads; E does not.

### Which is updated more often, Biorhythm 365days or E?

Biorhythm 365days ships an update every 2 weeks, and E every 3 months. Most recently, Biorhythm 365days was updated on July 17, 2026 and E on June 11, 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.*