# unforgettable vs Papertrell V2

The clearest difference is rating: unforgettable at 5.0 against Papertrell V2's 1.0. unforgettable also leads on update cadence (every 2 months vs every 9 months) and iOS requirement (11.0 vs 15.6). Papertrell V2's advantage is monetization model (free vs subscription). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. unforgettable sells 2 in-app purchases, starting at $16.00 per month and Papertrell V2 sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

unforgettable holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

unforgettable ships an update every 2 months, Papertrell V2 every 9 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | unforgettable | Papertrell V2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unforgettable-read-and-remember/id6449592623/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/papertrell-v2/id6451319528/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Subscription | **Free** |
| Size | 44 MB | 92 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Spiegler](https://appshunter.io/developer/1688142315) | [Trellisys.net](https://appshunter.io/developer/327320942) |

## What reviewers say

### unforgettable

[App page](https://appshunter.io/ios/app/unforgettable-read-and-remember/id6449592623)

This app helps you retain information from non-fiction books by creating intelligent flashcards from key messages. It supports over 1700 books and uses a spaced repetition system to combat the forgetting curve. Access to all features requires a paid subscription.

**Highlights:** Intelligent flashcard creation, Spaced repetition system, Supports 1700+ non-fiction books, Track key messages from books, Review using flashcards

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Monthly  Access | $16.00 | per month |
| Unlimited Yearly Access | $96.00 | per year |


### Papertrell V2

[App page](https://appshunter.io/ios/app/papertrell-v2/id6451319528)

This tool allows creators to preview interactive storefronts and content they've built on the Papertrell platform. It's designed to help publishers and authors create engaging digital products from various book types.

**Highlights:** Preview storefronts, Preview authored titles, Supports interactive apps, Create digital products, Rapid app creation

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 1 Credit | $0.99 | one-time |
| Pack of 2 Credits | $1.99 | one-time |
| Pack of 3 Credits | $2.99 | one-time |
| Pack of 4 Credits | $3.99 | one-time |
| Pack of 5 Credits | $4.99 | one-time |
| Pack of 6 Credits | $5.99 | one-time |
| Pack of 7 Credits | $6.99 | one-time |
| Pack of 8 Credits | $7.99 | one-time |
| Pack of 10 Credits | $9.99 | one-time |


## Frequently asked questions

### Is unforgettable free?

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

### Is Papertrell V2 free?

Papertrell V2 is free to download, with in-app purchases available.

### Which has better reviews, unforgettable or Papertrell V2?

unforgettable is rated higher. unforgettable averages 5.0 out of 5 from 1 ratings, while Papertrell V2 averages 1.0 from 1 ratings.

### Do unforgettable or Papertrell V2 have ads?

Neither unforgettable nor Papertrell V2 shows ads.

### Which is updated more often, unforgettable or Papertrell V2?

unforgettable ships an update every 2 months, and Papertrell V2 every 9 months. Most recently, unforgettable was updated on October 24, 2026 and Papertrell V2 on October 30, 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.*