# e vs iNatural

The clearest difference is update cadence: e at monthly against iNatural's every 17 months. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

e ships an update monthly, iNatural every 17 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | e | iNatural |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/e-billings-mob/id1642796709/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Update frequency | **Monthly** | Every 17 months |
| Monetization | Free | — |
| Size | 52 MB | 48 MB |
| Requires iOS | **14.0.0** | 15.1 |
| Age rating | 17+ | 12+ |
| Developer | [VENDA NO DIGITAL SERVICOS DE MARKETING DIGITAL LTDA](https://appshunter.io/developer/1642796711) | [Argo Soluções tecnológicas LTDA](https://appshunter.io/developer/1545741990) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-billings-mob/id1642796709)

This app helps users track daily observations related to a specific fertility awareness method. It allows for easy viewing of cycle graphs on various devices and facilitates sharing information with partners and instructors. It is intended for users already familiar with the Billings Ovulation Method.

**Highlights:** Daily observation notes, Cycle graph visualization, Cross-device access, Information sharing, Method-specific tracking

**In-app purchases:** none


### iNatural

[App page](https://appshunter.io/ios/app/inatural/id6479702377)

**In-app purchases:** none


## Frequently asked questions

### Is e free?

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

### Is iNatural free?

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

### Which is updated more often, e or iNatural?

e ships an update monthly, and iNatural every 17 months. Most recently, e was updated on November 3, 2026 and iNatural on November 4, 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.*