# Chronographer vs Smart Spam Filter

The clearest difference is review sentiment: Smart Spam Filter at 98% against Chronographer's 50%. Smart Spam Filter also leads on rating (4.4 vs 3.4) and update cadence (monthly vs every 2 months). Chronographer's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Smart Spam Filter sells 2 in-app purchases, starting at $2.99 per month. Chronographer asks for nothing beyond the download.

Smart Spam Filter holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 5 and 9 respectively. Written reviews point the same way: 50% of Chronographer's written reviews are positive against 98% of Smart Spam Filter's.

Chronographer ships an update every 2 months, Smart Spam Filter monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Chronographer | Smart Spam Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/chronographer/id6448242917/reviews) | **[4.4 (9 ratings)](https://appshunter.io/ios/app/smart-spam-filter/id6503603784/reviews)** |
| Number of ratings | 5 | **9** |
| Positive reviews | 50.0% of reviews | **98.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 22 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Robert France](https://appshunter.io/developer/1684138105) | [Junbum Lee](https://appshunter.io/developer/1749481503) |

## What reviewers say

### Chronographer

[App page](https://appshunter.io/ios/app/chronographer/id6448242917)

This app helps you meticulously track the accuracy of your mechanical watches. It records time differences, calculates detailed performance metrics, and visualizes trends with charts and histograms. You can also manage your watch collection, log daily wear, and analyze positional variations.

**Highlights:** Track mechanical watch accuracy, Calculate detailed performance metrics, Visualize accuracy with charts and histograms, Manage watch collection with notes and photos, Log daily watch wear, Analyze positional variation, Export watch data

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

**In-app purchases:** none


### Smart Spam Filter

[App page](https://appshunter.io/ios/app/smart-spam-filter/id6503603784)

This AI-powered application automatically filters unwanted spam and smishing messages. It utilizes advanced AI models, both online and on-device, to detect and block new types of fraudulent texts in real-time. Additional features include custom blacklisting and whitelisting for enhanced control.

**Highlights:** AI-based spam/smishing filtering, Online real-time AI detection, On-device AI learning, Keyword and number blocking, Whitelist functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy a cup of coffee per month | $2.99 | per month |
| Support a chicken per year | $29.99 | per year |


## Frequently asked questions

### Is Chronographer free?

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

### Is Smart Spam Filter free?

Smart Spam Filter is free to download, with in-app purchases available.

### Which has better reviews, Chronographer or Smart Spam Filter?

Smart Spam Filter is rated higher. Chronographer averages 3.4 out of 5 from 5 ratings, while Smart Spam Filter averages 4.4 from 9 ratings.

### Do Chronographer or Smart Spam Filter have ads?

Neither Chronographer nor Smart Spam Filter shows ads.

### Which is updated more often, Chronographer or Smart Spam Filter?

Chronographer ships an update every 2 months, and Smart Spam Filter monthly. Most recently, Chronographer was updated on November 3, 2026 and Smart Spam Filter on November 4, 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.*