# Know Your Lemons vs MammoScreen

Know Your Lemons and MammoScreen are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Know Your Lemons ships an update fortnightly, MammoScreen monthly. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Know Your Lemons | MammoScreen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (125 ratings)](https://appshunter.io/ios/app/know-your-lemons/id1420212829/reviews)** | — |
| Number of ratings | **125** | — |
| Positive reviews | 77.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 196 MB | 19 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Know Your Lemons Foundation Inc.](https://appshunter.io/developer/1420212828) | [Elaros](https://appshunter.io/developer/1544802505) |

## What reviewers say

### Know Your Lemons

[App page](https://appshunter.io/ios/app/know-your-lemons/id1420212829)

This app empowers users to take control of their breast health. It offers personalized risk assessment, monthly self-exam reminders, and educational tools to understand symptoms and prepare for screenings. Track your cycle and learn how to perform self-exams with confidence.

**Highlights:** Monthly self-exam reminders, Personalized risk calculation, Screening plan creation, Audio self-exam guides, Menstrual cycle tracking, Learn 12 breast cancer symptoms

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and navigate
- 💡 Informative and educational content
- 🚀 Helpful reminders for self-exams
- 🎨 Beautiful and engaging design
- ✅ Clear explanations of symptoms

**What reviewers complain about**

- 🐛 Reminder notifications often inaccurate
- 🐛 Risk assessment quiz bugs/restarts
- 🐛 Data loss issues
- 🐛 Login problems/inability to re-enter
- 🐛 Outdated recurrence statistics

**Reported bugs**

- Reminder notifications are consistently wrong (early or not sent)
- Risk assessment quiz restarts mid-quiz
- User data disappears after a period
- Unable to log back into the app after initial use
- Age selection in screening quiz is limited and buggy

**Requested features**

- Adjustable reminder timings for varying cycle lengths
- Reminders to stay on Lock Screen/icon badge
- More inclusive language for transgender individuals
- Inclusion of UK/global location data
- Update recurrence statistics with current data


### MammoScreen

[App page](https://appshunter.io/ios/app/mammoscreen/id6479296562)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Know Your Lemons free?

Know Your Lemons is free to download, with no in-app purchases.

### Is MammoScreen free?

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

### Do Know Your Lemons or MammoScreen have ads?

Neither Know Your Lemons nor MammoScreen shows ads.

### Which is updated more often, Know Your Lemons or MammoScreen?

Know Your Lemons ships an update fortnightly, and MammoScreen monthly. Most recently, Know Your Lemons was updated on October 13, 2026 and MammoScreen on October 6, 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.*