# Prism Notes vs Diddit

The clearest difference is update cadence: Prism Notes at every 4 days against Diddit's monthly. Prism Notes also leads on monetization model (free vs freemium) and ratings volume (33 vs 6). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Prism Notes sells 2 one-off in-app purchases and Diddit sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Prism Notes against 5.0 for Diddit. That said, the two scores are not equally well evidenced: Prism Notes has 33 ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Prism Notes ships an update every 4 days, Diddit monthly. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Prism Notes | Diddit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (33 ratings)](https://appshunter.io/ios/app/prism-notes/id6754857785/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/diddit-shareable-logbook/id6783506911/reviews)** |
| Number of ratings | **33** | 6 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | **Free** | Freemium |
| Size | 19 MB | 18 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tommy Joseph](https://appshunter.io/developer/1850558223) | [Christopher LoSacco](https://appshunter.io/developer/1798483172) |

## What reviewers say

### Prism Notes

[App page](https://appshunter.io/ios/app/prism-notes/id6754857785)

Capture thoughts and links quickly with a familiar texting interface. Organize ideas with AI-suggested tags and develop them across linked threads. Review notes to keep what matters and easily search by keyword or meaning.

**Highlights:** Texting-like note capture, AI-suggested tags, Threaded idea development, Review mode for notes, Sync across devices, Natural language reminders, Lock screen capture

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $6.99 | one-time |
| Lifetime Unlock | $12.99 | one-time |


### Diddit

[App page](https://appshunter.io/ios/app/diddit-shareable-logbook/id6783506911)

Create shared trackers for recurring life events with others. Easily log entries, view historical timelines, and manage household tasks, hobbies, or pet care. Your data is securely stored in iCloud with no third-party tracking.

**Highlights:** Create shared trackers, One-tap logging, Historical timelines, Private or shared groups, iCloud data storage, No third-party tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diddit Plus (Monthly) | $1.99 | per month |
| Diddit Plus | $19.99 | per year |


## Frequently asked questions

### Is Prism Notes free?

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

### Is Diddit free?

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

### Which has better reviews, Prism Notes or Diddit?

Diddit is rated higher. Prism Notes averages 4.9 out of 5 from 33 ratings, while Diddit averages 5.0 from 6 ratings.

### Do Prism Notes or Diddit have ads?

Neither Prism Notes nor Diddit shows ads.

### Which is updated more often, Prism Notes or Diddit?

Prism Notes ships an update every 4 days, and Diddit monthly. Most recently, Prism Notes was updated on October 17, 2026 and Diddit on October 4, 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.*