# Back vs Solus Library App

The clearest difference is rating: Solus Library App at 2.7 against Back's 2.5. Solus Library App also leads on review sentiment (22% vs 13%). Back's advantage is ratings volume (125 vs 13). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Solus Library App holds the better App Store score, 2.7 against 2.5. That said, the two scores are not equally well evidenced: Back has 125 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 13% of Back's written reviews are positive against 22% of Solus Library App's.

Back ships an update every 3 weeks, Solus Library App every 5 weeks. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Back | Solus Library App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (125 ratings)](https://appshunter.io/ios/app/back-up-care/id947422033/reviews) | **[2.7 (13 ratings)](https://appshunter.io/ios/app/solus-library-app/id1466050876/reviews)** |
| Number of ratings | **125** | 13 |
| Positive reviews | 12.6% of reviews | **22.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 69 MB | 167 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Bright Horizons CC LLC](https://appshunter.io/developer/840375887) | [SOLUS UK](https://appshunter.io/developer/423710417) |

## What reviewers say

### Back

[App page](https://appshunter.io/ios/app/back-up-care/id947422033)

This app provides peace of mind by offering replacement family care when regular arrangements fall through. It allows users to conveniently schedule care, manage reservations, and find nearby centers directly from their mobile device.

**Highlights:** Schedule back-up care, Request previous caregivers, View reservation details, Receive confirmation notifications, Copy past reservations, Find nearby care centers, Add reservations to calendar

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and easy booking process
- 👍 User-friendly interface design
- 🎯 Convenient mobile access to benefits
- ⚡ Fast reservation submission when working
- 🔐 Face ID login convenience

**What reviewers complain about**

- 🐛 Frequent app crashes and errors
- 🔓 Persistent login and authentication issues
- ❌ Unreliable caregiver availability
- ⏰ Last-minute cancellations and no-shows
- 🔄 Forced logouts between sessions

**Reported bugs**

- Login credentials not accepted despite being correct
- Face ID authentication fails
- Request Care button missing or non-functional
- App version mismatch preventing login
- Forced logout when navigating away from app

**Requested features**

- Distance-based filtering for childcare centers
- Display facility names after booking
- Overnight reservation options
- Extended session timeout before re-authentication
- Caregiver selection and preference system


### Solus Library App

[App page](https://appshunter.io/ios/app/solus-library-app/id1466050876)

Access your local library's catalog and manage your account on your Apple device. Search for books, renew existing loans, and place new reservations with ease. Contact your library to get started.

**Highlights:** Manage library account, Search catalog, Renew books, Reserve books, Access from iPhone, iPad, iPod Touch

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

**In-app purchases:** none


## Frequently asked questions

### Is Back free?

Back is free to download, with no in-app purchases.

### Is Solus Library App free?

Solus Library App is free to download, with no in-app purchases.

### Which has better reviews, Back or Solus Library App?

Solus Library App is rated higher. Back averages 2.5 out of 5 from 125 ratings, while Solus Library App averages 2.7 from 13 ratings.

### Do Back or Solus Library App have ads?

Neither Back nor Solus Library App shows ads.

### Which is updated more often, Back or Solus Library App?

Back ships an update every 3 weeks, and Solus Library App every 5 weeks. Most recently, Back was updated on October 20, 2026 and Solus Library App on October 14, 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.*