# Chart Neo vs NFP Calendar

The clearest difference is in-app purchases: NFP Calendar at none against Chart Neo's 2. NFP Calendar also leads on review sentiment (100% vs 80%). Chart Neo's advantage is ratings volume (72 vs 3) and device support (4 vs 2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Chart Neo sells 2 one-off in-app purchases. NFP Calendar asks for nothing beyond the download.

Chart Neo holds the better App Store score, 4.8 against 4.7. That said, the two scores are not equally well evidenced: Chart Neo has 72 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 80% of Chart Neo's written reviews are positive against 100% of NFP Calendar's, so the app with the better star average is not the one people write more warmly about.

Chart Neo ships an update every 6 weeks, NFP Calendar every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Chart Neo | NFP Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (72 ratings)](https://appshunter.io/ios/app/chart-neo/id1376976631/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/nfp-calendar/id6751753267/reviews) |
| Number of ratings | **72** | 3 |
| Positive reviews | 79.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 8 MB |
| Requires iOS | **13.6** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [NeoFertility LLC](https://appshunter.io/developer/1837439527) | [Esteban Cervera](https://appshunter.io/developer/1209785445) |

## What reviewers say

### Chart Neo

[App page](https://appshunter.io/ios/app/chart-neo/id1376976631)

This app simplifies menstrual cycle tracking by combining proven methods into an easy-to-use interface. It offers fast recording, offline functionality, and detailed chart viewing, with an accompanying web portal for advanced features and advisor interaction.

**Highlights:** Combines proven charting methods, Fast and easy sign recording, Offline functionality, View historical charts, Web portal access, Share with spouse/devices, Apple Watch companion app

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Year of Chart Neo | $19.99 | one-time |
| Cycle Charting Basics | $99.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- 👍 Integrates with TempDrop, Proove, Kegg, Mira
- 👍 Excellent for tracking fertility and cycle data
- 👍 Allows detailed symptom and note tracking
- 👍 Easy to share data with healthcare professionals

**What reviewers complain about**

- 🐛 Occasional glitches and bugs
- 🐛 UX/UI could be improved
- 🐛 Difficult to find pricing information
- 🐛 Requires a yearly membership
- 🐛 Some users feel information is gatekept behind consultants

**Reported bugs**

- App crashes when entering data
- Keyboard stays up after email/password entry preventing setup
- App requires logging in and reintegrating with Tempdrop frequently
- Swiping left to right to log symptom level confuses the app

**Requested features**

- Add decreased appetite as a symptom
- Add lower back pain as a symptom
- Make main screen buttons more visible
- Explain colors/notations and extra features within the app
- Bring back the ability to easily swipe between days


### NFP Calendar

[App page](https://appshunter.io/ios/app/nfp-calendar/id6751753267)

Track your fertility naturally using various methods like Creighton or Billings. Record daily observations, manage your cycle, and export data for your instructor or doctor. Designed specifically for Natural Family Planning users.

**Highlights:** Record mucus observations, Track menstrual flow, Log intercourse timing, Automatic cycle detection, Generate PDF charts, Export data as JSON, iCloud sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Chart Neo free?

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

### Is NFP Calendar free?

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

### Which has better reviews, Chart Neo or NFP Calendar?

Chart Neo is rated higher. Chart Neo averages 4.8 out of 5 from 72 ratings, while NFP Calendar averages 4.7 from 3 ratings.

### Do Chart Neo or NFP Calendar have ads?

Neither Chart Neo nor NFP Calendar shows ads.

### Which is updated more often, Chart Neo or NFP Calendar?

Chart Neo ships an update every 6 weeks, and NFP Calendar every 2 months. Most recently, Chart Neo was updated on November 2, 2026 and NFP Calendar on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*