# Decimator vs Warby Parker

The clearest difference is rating: Warby Parker at 4.9 against Decimator's 4.3. Warby Parker also leads on update cadence (every 8 days vs every 9 months) and ratings volume (296K vs 3). Decimator's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases and device support there is nothing between them.

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

Warby Parker holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Warby Parker has 296K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 56% of Decimator's written reviews are positive against 45% of Warby Parker's, so the app with the better star average is not the one people write more warmly about.

Decimator ships an update every 9 months, Warby Parker every 8 days. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Decimator | Warby Parker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/decimator/id472607339/reviews) | **[4.9 (296K ratings)](https://appshunter.io/ios/app/warby-parker/id1107693363/reviews)** |
| Number of ratings | 3 | **296K** |
| Positive reviews | **55.6% of reviews** | 44.8% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 370 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kosada Incorporated](https://appshunter.io/developer/417152887) | [Warby Parker Inc](https://appshunter.io/developer/1107693362) |

## What reviewers say

### Decimator

[App page](https://appshunter.io/ios/app/decimator/id472607339)

Easily find Dewey Decimal numbers with this offline app. It supports multiple languages and allows browsing and searching for classification codes.

**Highlights:** Dewey Decimal number lookup, Browse and search functionality, Offline access, Supports 10 languages

**Features:** macOS Compatibility

**In-app purchases:** none


### Warby Parker

[App page](https://appshunter.io/ios/app/warby-parker/id1107693363)

Shop for prescription eyeglasses, sunglasses, and contact lenses. Features include virtual try-on, AI-powered recommendations, and a home try-on program. Get stylish eyewear starting at $95 with free shipping and returns.

**Highlights:** Shop eyeglasses and sunglasses, Virtual frame try-on, AI-powered frame recommendations, Shop contact lenses, Home Try-On program, Pupillary distance measurement tool

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast shipping
- 👍 Excellent customer service
- 👍 Convenient home try-on
- 👍 Affordable prices
- 👍 High-quality products

**What reviewers complain about**

- 🐛 Ordering issues
- 🐛 Delivery delays
- 🐛 Incorrect prescriptions
- 🐛 Compatibility issues with older devices
- ⚠️ Limited availability in Canada

**Reported bugs**

- App crashes
- Virtual try-on feature not working
- Ordering process glitches

**Requested features**

- Allow replacing lost/broken glasses without new prescription
- Improve app user experience
- Integrate insurance information in ordering process


## Frequently asked questions

### Is Decimator free?

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

### Is Warby Parker free?

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

### Which has better reviews, Decimator or Warby Parker?

Warby Parker is rated higher. Decimator averages 4.3 out of 5 from 3 ratings, while Warby Parker averages 4.9 from 296K ratings.

### Do Decimator or Warby Parker have ads?

Warby Parker shows ads; Decimator does not.

### Which is updated more often, Decimator or Warby Parker?

Decimator ships an update every 9 months, and Warby Parker every 8 days. Most recently, Decimator was updated on October 7, 2026 and Warby Parker on October 19, 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.*