# Ovulation Partner vs Tallwise

The clearest difference is update cadence: Tallwise at every 4 days against Ovulation Partner's every 8 months. Ovulation Partner's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Ovulation Partner sells 3 in-app purchases, starting at $4.99 per month and Tallwise sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Ovulation Partner ships an update every 8 months, Tallwise every 4 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ovulation Partner | Tallwise |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 days** |
| Size | 23 MB | 8 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Juan Ballon](https://appshunter.io/developer/1686619491) | [Amir Alagic](https://appshunter.io/developer/1842715934) |

## What reviewers say

### Ovulation Partner

[App page](https://appshunter.io/ios/app/ovulation-partner-greenlight/id6751544752)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Greenlight Premium (Monthly) | $4.99 | per month |
| Greenlight Premium (3 Months) | $12.99 | per 3 months |
| Annual Premium - Greenlight | $29.99 | per year |


### Tallwise

[App page](https://appshunter.io/ios/app/tallwise-height-predictor/id6810679284)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $1.99 | per month |
| Tallwise Plus | $4.99 | per 7 days |
| Tallwise Plus | $34.99 | per year |
| Plus Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Ovulation Partner free?

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

### Is Tallwise free?

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

### Do Ovulation Partner or Tallwise have ads?

Neither Ovulation Partner nor Tallwise shows ads.

### Which is updated more often, Ovulation Partner or Tallwise?

Ovulation Partner ships an update every 8 months, and Tallwise every 4 days. Most recently, Ovulation Partner was updated on October 28, 2026 and Tallwise on October 24, 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.*