# SPINE [Reading Tracker] vs Shelfd

The clearest difference is in-app purchases: SPINE [Reading Tracker] at none against Shelfd's 3. SPINE [Reading Tracker] also leads on ratings volume (55 vs 3) and iOS requirement (17.0 vs 26.2). Shelfd's advantage is update cadence (every 2 days vs every 5 days). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Shelfd sells 3 in-app purchases, starting at $2.99 per month. SPINE [Reading Tracker] asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for SPINE [Reading Tracker] against 5.0 for Shelfd. That said, the two scores are not equally well evidenced: SPINE [Reading Tracker] has 55 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

SPINE [Reading Tracker] ships an update every 5 days, Shelfd every 2 days. The most recent releases landed on October 1, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SPINE [Reading Tracker] | Shelfd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (55 ratings)](https://appshunter.io/ios/app/spine-reading-tracker/id6759875368/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/shelfd-reading-tracker/id6792915143/reviews) |
| Number of ratings | **55** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 28 MB | 14 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tanner Flake](https://appshunter.io/developer/1810308106) | [Zachary Selburg](https://appshunter.io/developer/6792915145) |

## What reviewers say

### SPINE [Reading Tracker]

[App page](https://appshunter.io/ios/app/spine-reading-tracker/id6759875368)

Log your reading progress, create custom tier lists of your favorite books, and discover new titles. Connect with friends to see their reading habits and share recommendations.

**Highlights:** Track reading progress, Create book tier lists, Follow friends' reading, Personalized recommendations, Import Goodreads library

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

**In-app purchases:** none


### Shelfd

[App page](https://appshunter.io/ios/app/shelfd-reading-tracker/id6792915143)

Organize your reading life with a charming book tracker. Log what you're reading, discover your next book with a spin of a wheel, and visualize your reading habits with personalized stats and achievements. Enjoy a cozy, ad-free experience with optional premium features for advanced tracking.

**Highlights:** Track current, finished, and to-be-read books, Spin a wheel to pick your next read, Organize books by genre with custom colors, Set reading goals and view yearly stats, Earn achievements narrated by an Archivist, Import libraries from other apps (CSV), Backup and restore your library

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Annual | $24.99 | per year |
| Shelfd Founders Group | $59.99 | one-time |


## Frequently asked questions

### Is SPINE [Reading Tracker] free?

SPINE [Reading Tracker] is free to download, with no in-app purchases.

### Is Shelfd free?

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

### Which has better reviews, SPINE [Reading Tracker] or Shelfd?

SPINE [Reading Tracker] and Shelfd are both rated 5.0 out of 5 on the App Store, from 55 and 3 ratings respectively.

### Do SPINE [Reading Tracker] or Shelfd have ads?

Neither SPINE [Reading Tracker] nor Shelfd shows ads.

### Which is updated more often, SPINE [Reading Tracker] or Shelfd?

SPINE [Reading Tracker] ships an update every 5 days, and Shelfd every 2 days. Most recently, SPINE [Reading Tracker] was updated on October 1, 2026 and Shelfd on September 22, 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.*