# Filters vs Diary AI

The clearest difference is update cadence: Diary AI at every 16 months against Filters's every 40 months. On price, ads, in-app purchases and device support there is nothing between them.

Filters costs $0.99 and Diary AI $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Filters ships an update every 40 months, Diary AI every 16 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Filters | Diary AI |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/filters/id369326771/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 16 months** |
| Monetization | Paid | — |
| Size | 3 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Gianluca Natalini](https://appshunter.io/developer/348380792) | [Juiko Ong](https://appshunter.io/developer/639263890) |

## What reviewers say

### Filters

[App page](https://appshunter.io/ios/app/filters/id369326771)

This application assists in calculating electronic filter components for speaker systems. It automatically determines inductor and capacitor values based on desired impedance and cutoff frequency, and designs circuits for various speaker types. Users can visualize frequency and phase diagrams for their custom speaker designs.

**Highlights:** Automatic electronic component calculation, Frequency and phase diagram display (Bode plots), Electronic circuit schema display, Support for various speaker types (high, mid, low, sub), First and second-order filter design, Complete filter theory and formulas

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

**In-app purchases:** none


### Diary AI

[App page](https://appshunter.io/ios/app/diary-ai/id6532618062)

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

**In-app purchases:** none


## Frequently asked questions

### Is Filters free?

Filters costs $0.99, with no in-app purchases.

### Is Diary AI free?

Diary AI costs $0.99, with no in-app purchases.

### Do Filters or Diary AI have ads?

Neither Filters nor Diary AI shows ads.

### Which is updated more often, Filters or Diary AI?

Filters ships an update every 40 months, and Diary AI every 16 months. Most recently, Filters was updated on October 9, 2026 and Diary AI on October 24, 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.*