# Pairly vs ENDO1000

The clearest difference is update cadence: ENDO1000 at every 8 days against Pairly's every 4 weeks. On price, ads, 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.

Pairly ships an update every 4 weeks, ENDO1000 every 8 days. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Pairly | ENDO1000 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 8 days** |
| Monetization | — | Free |
| Size | 37 MB | 42 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pairly Ltd](https://appshunter.io/developer/1770007058) | [The University of Edinburgh](https://appshunter.io/developer/428517240) |

## What reviewers say

### Pairly

[App page](https://appshunter.io/ios/app/pairly/id6711340957)

**Features:** Apple Wallet

**In-app purchases:** none


### ENDO1000

[App page](https://appshunter.io/ios/app/endo1000/id6752020204)

This app supports endometriosis research by allowing participants to track symptoms and complete study tasks. It also offers educational resources and community insights for anyone seeking information about the condition.

**Highlights:** Symptom and pain tracking, Study questionnaires, Progress tracking, Educational content, Research updates, Secure data handling

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

**In-app purchases:** none


## Frequently asked questions

### Is Pairly free?

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

### Is ENDO1000 free?

ENDO1000 is free to download, with no in-app purchases.

### Do Pairly or ENDO1000 have ads?

Neither Pairly nor ENDO1000 shows ads.

### Which is updated more often, Pairly or ENDO1000?

Pairly ships an update every 4 weeks, and ENDO1000 every 8 days. Most recently, Pairly was updated on October 11, 2026 and ENDO1000 on October 9, 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.*