unforgettable vs Papertrell V2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
unforgettable
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.
- Intelligent flashcard creation
- Spaced repetition system
- Supports 1700+ non-fiction books
- Track key messages from books
- Review using flashcards
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Most people spend hours reading books only to forget most of it. Use our intelligent cards and repeat the key messages of your favorite non-fiction books. With over 1700+ nonfiction books, we got you covered. How it works 1. Add the books you have read 2. Select the key messages 3. Repeat the flashcards App requires mandatory paid subscription to access all our features Please visit and read the following LICENSED APPLICATION END USER LICENSE AGREEMENT https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Papertrell V2
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.
- Preview storefronts
- Preview authored titles
- Supports interactive apps
- Create digital products
- Rapid app creation
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This app is the preview tool used in conjunction with the Papertrell platform. Use this app to preview storefronts you have built and titles that you have authored on the platform. Papertrell is a new way of creating and experiencing books and content. Papertrell has a massive catalog of eBooks and Audiobooks while also supporting interactive apps build on the Papertrell Platform While ebooks are limiting, apps based on book content are expensive to build. Publishers have a challenge while producing engaging digital products and also with marketing and promotions. Papertrell solves these problems for publishers and authors and provides a rapid way of creating interactive apps out of ■ illustrative non-fiction, ■ cookbooks, ■ how-to books, ■ reference books etc. ----------------------------------- Papertrell : re-imagining books !
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | unforgettable | Papertrell V2 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 44 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Joshua Spiegler | Trellisys.net |
In-app purchases
unforgettable
- Unlimited Monthly Access$16.001 Month
- Unlimited Yearly Access7 Days trial$96.001 Year
Papertrell V2
- Pack of 1 Credit$0.99
- Pack of 2 Credits$1.99
- Pack of 3 Credits$2.99
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- Pack of 4 Credits$3.99
- Pack of 5 Credits$4.99
- Pack of 6 Credits$5.99
- Pack of 7 Credits$6.99
- Pack of 8 Credits$7.99
- Pack of 10 Credits$9.99
Questions
Is unforgettable free?
Is Papertrell V2 free?
Which has better reviews, unforgettable or Papertrell V2?
Do unforgettable or Papertrell V2 have ads?
Which is updated more often, unforgettable or Papertrell V2?
Other comparisons
