# Extra Butter vs SlabLineage

The clearest difference is in-app purchases: Extra Butter at none against SlabLineage's 2. Extra Butter also leads on ratings volume (641 vs 1). SlabLineage's advantage is ads (none vs shown) and update cadence (every 3 days vs every 4 weeks). On price, rating and iOS requirement there is nothing between them.

Both are free to download. SlabLineage sells 2 in-app purchases, starting at $2.99 per month. Extra Butter asks for nothing beyond the download.

SlabLineage holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Extra Butter has 641 ratings behind it against 1, so its average is the more settled of the two.

Extra Butter ships an update every 4 weeks, SlabLineage every 3 days. The most recent releases landed on October 20, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Extra Butter | SlabLineage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (641 ratings)](https://appshunter.io/ios/app/extra-butter/id1375780718/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/slablineage/id6805587535/reviews)** |
| Number of ratings | **641** | 1 |
| Positive reviews | 68.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 87 MB | 11 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Extra Butter LLC](https://appshunter.io/developer/1375780717) | [Jesus Rivera](https://appshunter.io/developer/6805587537) |

## What reviewers say

### Extra Butter

[App page](https://appshunter.io/ios/app/extra-butter/id1375780718)

Discover curated streetwear, footwear, and accessories from a renowned New York boutique. Explore unique collaborations and exclusive lifestyle products with a cinematic shopping experience.

**Highlights:** Curated fashion and footwear, Global sourcing, Exclusive collaborations, Private label apparel, Cinematic shopping experience

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and reliable shipping
- 👍 Easy-to-use website
- 📦 Wide selection and availability
- 🎯 Carries exclusive/niche brands like Salehe Bembury
- 💰 Great prices

**What reviewers complain about**

- 🐛 App crashes and force closes
- 🐛 Raffle/draw entry buttons not visible or clickable
- 🐛 Checkout process errors
- ⏰ Release delays (3-4 hours late)
- 🔕 Missing release notifications

**Reported bugs**

- App keeps crashing and force closing unexpectedly
- Next/Enter buttons in raffle draws not visible on screen
- Checkout fails with 'shipping address not available' error
- Items disappear from cart after CAPTCHA verification
- Raffle page shows 404 error on website

**Requested features**

- Fix raffle entry UI to ensure buttons are visible and clickable
- Implement reliable release notifications
- Improve app stability to prevent crashes
- Fix checkout validation for shipping addresses
- Ensure timely release drops at announced times


### SlabLineage

[App page](https://appshunter.io/ios/app/slablineage/id6805587535)

This app helps trading card collectors price and sell their items on eBay. It automatically reprices active listings based on current market data and allows users to track their collection's value over time. It also offers features for in-person sales at card shows.

**Highlights:** Automatic eBay listing repricing, Aggregated market price (SL Consensus), Card scanning for instant market value, Collection portfolio tracking, Card show digital showcase mode, Real-time pricing for Pokémon, One Piece, and sports cards

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Extra Butter free?

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

### Is SlabLineage free?

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

### Which has better reviews, Extra Butter or SlabLineage?

SlabLineage is rated higher. Extra Butter averages 4.8 out of 5 from 641 ratings, while SlabLineage averages 5.0 from 1 ratings.

### Do Extra Butter or SlabLineage have ads?

Extra Butter shows ads; SlabLineage does not.

### Which is updated more often, Extra Butter or SlabLineage?

Extra Butter ships an update every 4 weeks, and SlabLineage every 3 days. Most recently, Extra Butter was updated on October 20, 2026 and SlabLineage on October 29, 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.*