# Ovulation calculator (cycle) vs INS

The clearest difference is rating: INS at 5.0 against Ovulation calculator (cycle)'s 3.7. INS also leads on ads (none vs shown) and monetization model (free vs ad-supported). Ovulation calculator (cycle)'s advantage is ratings volume (3 vs 1). On price, update cadence, 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.

INS holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Ovulation calculator (cycle) ships an update every 5 months, INS every 6 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Ovulation calculator (cycle) | INS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/ovulation-calculator-cycle/id934678601/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ins/id1460231905/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 22 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [International Neuromodulation Society](https://appshunter.io/developer/1460231904) |

## What reviewers say

### Ovulation calculator (cycle)

[App page](https://appshunter.io/ios/app/ovulation-calculator-cycle/id934678601)

This app helps users track their menstrual cycle to predict ovulation and fertile days. By inputting the start and end dates of the last period, users can estimate their ovulation day and potential pregnancy window.

**Highlights:** Menstrual cycle tracking, Ovulation day calculation, Fertile window prediction, Pregnancy estimation

**Features:** Vision Pro support

**In-app purchases:** none


### INS

[App page](https://appshunter.io/ios/app/ins/id1460231905)

Access all information for the International Neuromodulation Society congresses. View sessions, speaker bios, exhibitor lists, and maps. Create a personalized schedule and stay updated with the latest news.

**Highlights:** Congress information, Session details, Speaker bios, Exhibitor list, Interactive maps, Personalized schedule, Latest news updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ovulation calculator (cycle) free?

Ovulation calculator (cycle) is free to download, with no in-app purchases.

### Is INS free?

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

### Which has better reviews, Ovulation calculator (cycle) or INS?

INS is rated higher. Ovulation calculator (cycle) averages 3.7 out of 5 from 3 ratings, while INS averages 5.0 from 1 ratings.

### Do Ovulation calculator (cycle) or INS have ads?

Ovulation calculator (cycle) shows ads; INS does not.

### Which is updated more often, Ovulation calculator (cycle) or INS?

Ovulation calculator (cycle) ships an update every 5 months, and INS every 6 months. Most recently, Ovulation calculator (cycle) was updated on October 24, 2026 and INS on October 13, 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.*