# Transformers Rescue Bots vs Lios Calibre Viewer

The clearest difference is review sentiment: Lios Calibre Viewer at 100% against Transformers Rescue Bots's 31%. Lios Calibre Viewer also leads on rating (4.3 vs 3.6) and update cadence (every 5 days vs every 12 months). Transformers Rescue Bots's advantage is chart position (#119 vs unranked) and ratings volume (15 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

Transformers Rescue Bots costs $2.99 and Lios Calibre Viewer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lios Calibre Viewer holds the better App Store score, 4.3 against 3.6. That said, the two scores are not equally well evidenced: Transformers Rescue Bots has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 31% of Transformers Rescue Bots's written reviews are positive against 100% of Lios Calibre Viewer's.

Transformers Rescue Bots ships an update every 12 months, Lios Calibre Viewer every 5 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Transformers Rescue Bots | Lios Calibre Viewer |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | [3.6 (15 ratings)](https://appshunter.io/ios/app/transformers-rescue-bots/id878704422/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/lios-calibre-viewer/id6754184384/reviews)** |
| Number of ratings | **15** | 3 |
| Positive reviews | 30.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 days** |
| Monetization | Paid | Paid |
| Best chart rank | **#119** | — |
| Size | 682 MB | 11 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PlayDate Digital Inc.](https://appshunter.io/developer/652113715) | [Antonio Torres](https://appshunter.io/developer/1799367055) |

## What reviewers say

### Transformers Rescue Bots

[App page](https://appshunter.io/ios/app/transformers-rescue-bots/id878704422)

**Currently charting:** #119 Top Paid · Book (US App Store)

Join the Transformers Rescue Bots in an interactive storybook adventure to save Griffin Rock from ravenous plants. Become a cadet, help the Burns family, and practice early reading skills with engaging animations and voices.

**Highlights:** Interactive storybook adventure, Transformers Rescue Bots characters, Read to me and Read along modes, Quality animation, Problem-solving skill development, Early literacy practice

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Fun animated story
- 👍 Nice animations
- 👍 Voices help with reading
- 👍 Good for young fans
- 👍 Interactive features

**What reviewers complain about**

- 👎 Short story length
- 👎 Little interaction
- 👎 Not worth the price
- 👎 Voices not original
- 👎 Boring for kids

**Reported bugs**

- App crashes at a certain point
- App keeps closing down
- Sound not working
- Audio not working
- App crashes when taking picture

**Requested features**

- Update to fix crashing when taking photo
- Allow saving of Rescue Bot photos at the end
- Add original voices from the show
- More interaction and game play
- Add more stories or levels


### Lios Calibre Viewer

[App page](https://appshunter.io/ios/app/lios-calibre-viewer/id6754184384)

Access and read your entire book collection from your computer on your iPad or iPhone. Organize books by category and download them for offline reading, saving device space. Browse your library quickly with locally stored book names and cover art.

**Highlights:** Stream Calibre library, Download books for offline reading, Organize books by category, Quick library browsing, Save device space

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

**In-app purchases:** none


## Frequently asked questions

### Is Transformers Rescue Bots free?

Transformers Rescue Bots costs $2.99, with no in-app purchases.

### Is Lios Calibre Viewer free?

Lios Calibre Viewer costs $2.99, with no in-app purchases.

### Which has better reviews, Transformers Rescue Bots or Lios Calibre Viewer?

Lios Calibre Viewer is rated higher. Transformers Rescue Bots averages 3.6 out of 5 from 15 ratings, while Lios Calibre Viewer averages 4.3 from 3 ratings.

### Do Transformers Rescue Bots or Lios Calibre Viewer have ads?

Neither Transformers Rescue Bots nor Lios Calibre Viewer shows ads.

### Which is updated more often, Transformers Rescue Bots or Lios Calibre Viewer?

Transformers Rescue Bots ships an update every 12 months, and Lios Calibre Viewer every 5 days. Most recently, Transformers Rescue Bots was updated on November 1, 2026 and Lios Calibre Viewer 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.*