# Kernels vs Advanced Search Smart Options

The clearest difference is in-app purchases: Kernels at none against Advanced Search Smart Options's 1. Kernels also leads on ads (none vs shown) and rating (4.7 vs 4.3). Advanced Search Smart Options's advantage is ratings volume (30 vs 10). On price, update cadence and device support there is nothing between them.

Both are free to download. Advanced Search Smart Options sells 1 one-off in-app purchase. Kernels asks for nothing beyond the download.

Kernels holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 10 and 30 respectively. Written reviews point the same way: 83% of Kernels's written reviews are positive against 67% of Advanced Search Smart Options's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 19, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Kernels | Advanced Search Smart Options |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10 ratings)](https://appshunter.io/ios/app/kernels-private-search-engine/id1591632823/reviews)** | [4.3 (30 ratings)](https://appshunter.io/ios/app/advanced-search-smart-options/id1617827632/reviews) |
| Number of ratings | 10 | **30** |
| Positive reviews | **83.3% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Funnls LLC](https://appshunter.io/developer/1591632825) | [manabu ueda](https://appshunter.io/developer/1606163236) |

## What reviewers say

### Kernels

[App page](https://appshunter.io/ios/app/kernels-private-search-engine/id1591632823)

This app acts as a personal search engine, allowing you to index and quickly find your saved text, web pages, images, emails, and documents. It prioritizes user privacy and synchronizes your data across devices for easy access anywhere. It helps boost productivity by making your digital information instantly searchable.

**Highlights:** Personal search index, Save text, web pages, images, Search emails and documents, Privacy-focused indexing, Cross-device synchronization, Boost productivity and organization

**Features:** macOS Compatibility

**In-app purchases:** none


### Advanced Search Smart Options

[App page](https://appshunter.io/ios/app/advanced-search-smart-options/id1617827632)

Simplify complex web searches by inputting keywords. This tool automatically generates advanced search queries with operators for precise results. Explore options like exact matches, date ranges, and specific file types.

**Highlights:** Keyword-based advanced search, Automatic search operator generation, AND, OR, and exclusion searches, Numerical and date range filtering, Specify site, domain, and file type, Search scope selection (title, content, URL)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Plan | $3.99 | one-time |


## Frequently asked questions

### Is Kernels free?

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

### Is Advanced Search Smart Options free?

Advanced Search Smart Options is free to download, with in-app purchases available.

### Which has better reviews, Kernels or Advanced Search Smart Options?

Kernels is rated higher. Kernels averages 4.7 out of 5 from 10 ratings, while Advanced Search Smart Options averages 4.3 from 30 ratings.

### Do Kernels or Advanced Search Smart Options have ads?

Advanced Search Smart Options shows ads; Kernels does not.

### Which is updated more often, Kernels or Advanced Search Smart Options?

Kernels ships an update every 2 months, and Advanced Search Smart Options every 2 months. Most recently, Kernels was updated on September 19, 2026 and Advanced Search Smart Options on August 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.*