Swivl M2 vs ReadOtter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Swivl M2
Enhance teaching and boost student engagement using a mobile device. This tool listens to classroom activity to offer valuable support for educators.
- Improve instruction
- Increase student participation
- Mobile device support
- Listens to class activity
- Provides educator support
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Improve instruction at each tier and increase student participation with your mobile device. M2 will listen to class and provide the support you need.
ReadOtter
This app helps teachers manage their classroom libraries by cataloging books, tracking student checkouts, and generating reading logs. It offers a free tier with core features and a premium subscription for advanced functionalities like cloud sync and student self-checkout.
- Library cataloging
- Student checkout tracking
- Digital reading logs
- Book categorization
- iCloud sync and backup
- Student self-checkout kiosk
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ReadOtter is the all-in-one classroom library app designed to help teachers save time and stay organized. Easily catalog books, track checkouts, and generate student reading logs using an iPhone or iPad. No extra hardware needed for scanning - just use your device’s camera. Free Features: - Library Cataloging: Track unlimited books, and add them by scanning, searching, or entering details manually. - Classroom Management: Add unlimited students and customize their otter avatar's color. - Teacher Checkout Mode: Quickly check books in and out, view availability, and track borrowing history. - Reading Logs: Keep a digital record of each student’s reading and returns. - Categorize: Organize books by custom tag or by series. - Privacy First: No ads, no trackers - your data stays securely on your device. - Import Books: Add a Libib or Booksource collection to you library. Premium Features (subscription required): - iCloud Sync & Backup: Sync your library across devices with the same Apple ID, including secure backups to iCloud. - Student Self-Checkout Mode: Turn your device into a kiosk with individual student PINs. - Book List Export: Create shareable spreadsheets for parents, administrators, or public lists. - Reading Insights: View and share reading data by student, group, or book. - Group Management: Organize students into flexible groups for better tracking. - Fast Checkouts: Scan and check out books directly from a student's profile. Have ideas or feature requests? Share feedback anytime in the app under Settings.
Screenshots
Verdict
The clearest difference is review sentiment: ReadOtter at 60% against Swivl M2's 0%. ReadOtter also leads on rating (4.7 vs 4.3) and ratings volume (41 vs 6). Swivl M2's advantage is in-app purchases (none vs 2) and iOS requirement (15.5 vs 17.2). On price, update cadence, ads and device support 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. ReadOtter sells 2 in-app purchases, starting at $2.99 per month. Swivl M2 asks for nothing beyond the download.
ReadOtter holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: ReadOtter has 41 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 0% of Swivl M2's written reviews are positive against 60% of ReadOtter's.
Swivl M2 ships an update monthly, ReadOtter every 2 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | Swivl M2 | ReadOtter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) | 4.7 (41 ratings) — better |
| Positive reviews | 0.0% of reviews | 60.0% of reviews — better |
| Number of ratings | 6 | 41 — better |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.5 — better | 17.2 |
| Further details — not scored | ||
| Size | 92 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Swivl, Inc | Human Theoria LLC |
Customer experience
Swivl M2
ReadOtter
In-app purchases
Swivl M2
No in-app purchases
ReadOtter
- ReadOtter Premium14 Days trial$2.991 Month
- ReadOtter Premium14 Days trial$19.991 Year









