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Source-backed analysis8

Review basis

Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.

8 reference sources

Information updated Nov 11, 2026

How we review
Shelf logo

Shelf Review

A social profile built from what you listen to, watch and read

By Official AppDuo editorial team · Fact-checked

  • iOS
  • Android
Freemium · Free
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Decide at a glance

Our verdict

Shelf suits people who want a self-updating profile of their music, films and books and like browsing friends' profiles. The trade-offs are an English-only interface, very little pricing information and broad access to data from several linked accounts.

Best for: Spotify, Letterboxd and Goodreads users who want their taste in one place

Skip it if: People who need a non-English interface

Pros

  • Connects Spotify, Netflix, Apple Music, Letterboxd, Goodreads and more
  • Weekly and monthly recaps plus taste comparisons with friends
  • Apps for iOS and Android; rated 4.6/5 on the App Store and 4.3/5 on Google Play

Cons

  • English-only interface
  • Store listings do not clearly state paid plans or billing periods
All pros and cons · Who is it for?

More pros

  • Per Shelf's policy, data is encrypted in transit and at rest, and accounts can be deleted in the app

More cons

  • Needs access to data from several services; the policy allows sharing with AI providers and affiliates

Best for

  • Friend groups who like comparing what everyone is into

Skip it if

  • People unwilling to link other service accounts to a third-party app

Experience & key features

Shelf is a social app from Koodos, Inc. (Koodos Labs), a New York-based company. Per its App Store description, it connects Spotify, Netflix, Apple Music, Letterboxd, Goodreads and other services and builds one profile of what you watch, read, listen to and play.

TechCrunch (21 Sep 2024) reported that Shelf launched publicly in summer 2024 after beta testing in late 2023. Founder Jad Esber said data sharing runs on a technology called DataMover, which lets users grant other apps access to their data. The article says Koodos had raised $7 million in total from investors including First Round Capital, M13, Blockchain Capital and IDEO.

Main features are weekly and monthly recaps, top artists and genres, taste comparisons, profile customisation and friends' Shelves. On pricing, the US App Store lists the app as free with in-app purchases, the only item being Weekly Insight at $0.99. We found no official pricing page; TechCrunch reported that Koodos planned to offer new customisation options and might monetise the insights the app surfaces.

Because Shelf reads data from several accounts, its privacy terms deserve a close look. The App Store says profiles are private by default and you choose which services to connect and what is visible. Shelf's policy says data is encrypted in transit and at rest, but also allows sharing with service providers (including AI providers) and creating aggregated, de-identified data to study trends. Weigh that before connecting if you want your listening, viewing and reading history kept private.

Plans & pricing

Prices last verified Nov 11, 2026

Free

Personal

Free

Free to download, with in-app purchases. The US App Store lists one item, Weekly Insight, at $0.99, without stating the billing period or what it unlocks.

Free plan limits
The App Store description lists service connections, a personal taste profile, weekly and monthly recaps and friends' Shelves, but does not say what, if anything, the free tier limits.
Free trial
No free trial
Cancellation & refunds

In-app purchases on iOS and Android are refunded by Apple and Google under each store's policy. Shelf's privacy policy and official pages do not state a separate refund policy.

Privacy

Shelf's privacy policy (effective 13 Oct 2026) lists account details (name, phone, email, profile photo, and gender or sexual orientation if you add them), contacts if you grant access, data from connected accounts (viewing habits, purchase history, inferred preferences) and read-only Google Calendar access if you connect Google. Data may be shared with service providers (including AI providers), affiliates and a buyer in a sale of the company; Shelf says it does not "sell" data beyond the purposes in the policy. Data is encrypted in transit (TLS) and at rest, and you can delete your account in the app or email [email protected]. The developer-declared App Store labels (not verified by Apple) list contact info, contacts, user content, identifiers and usage data as linked to you; on Google Play the developer declares no sharing with third parties.

Shelf alternatives

Controversies & incidents

Issues documented by the press, regulators, courts or the vendor itself. Every item is sourced; unproven claims are labelled as allegations. Last researched: Nov 11, 2026

No significant controversies or incidents found in the sources we checked.

Frequently asked questions

Is Shelf free?

It is free to download. The US App Store lists one in-app purchase, Weekly Insight, at $0.99.

Which platforms is Shelf on?

iPhone (iOS 18.0 or later) and Android via Google Play, where it shows 1M+ downloads.

Does Shelf support Vietnamese?

No. The App Store lists English only.

Which services does Shelf connect to?

The App Store description names Spotify, Netflix, Apple Music, Letterboxd, Goodreads and more; TechCrunch also mentions YouTube.

Does Shelf sell my data?

The privacy policy says Shelf does not "sell" data beyond the stated purposes, but it does share data with service providers (including AI providers) and affiliates. You can delete your account in the app or email [email protected].

Review evidence & sources8

Scores

Ease of use
7.0
Why this score

Simple model: connect accounts and the app builds the profile. The App Store lists English as the only interface language.

Features
7.0
Why this score

Multi-service sync, top artists and genres, a chronological history, weekly and monthly recaps, taste comparisons, profile customisation and friends' Shelves. Little exists beyond aggregation and sharing.

Value for money
7.0
Why this score

Free to download; the App Store lists one $0.99 purchase without saying what it unlocks, so the paid side is hard to judge.

Performance
6.5
Why this score

No independent source covers stability; the score rests mainly on store ratings of 4.6/5 (App Store) and 4.3/5 (Google Play).

Support
6.0
Why this score

The App Store points users to in-app contact and the privacy policy lists [email protected]; we found no help centre.

Privacy & security
6.5
Why this score

Encryption in transit and at rest, in-app account deletion and no third-party sharing declared on Google Play. Against that, the app collects activity and inferred preferences across many accounts, and the policy allows sharing with AI providers and affiliates.

What users say

Sources

Specs & compatibility
Developer
Koodos, Inc. (Koodos Labs)
Headquarters
United States
Launched
2023
Category
Social

Capabilities

  • Mobile app
  • Integrations

Platforms

  • iOS
  • Android

Interface languages

  • English

Integrations

  • Spotify
  • Netflix
  • Apple Music
  • Letterboxd
  • Goodreads
  • YouTube

Support

  • Email

Change history

  1. Feature.Latest US App Store update (8.149.7) at the time of checking.
  2. Update.Shelf updates its privacy policy.
  3. Company.TechCrunch reports Shelf launched publicly in summer 2024 and Koodos had raised $7 million in total.
Full change history (4)
  1. Launch.Shelf's first release on the US App Store.
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