# Filter Calculator vs Bias Daily

The clearest difference is ads: Bias Daily at none against Filter Calculator's shown. Bias Daily also leads on update cadence (every 3 days vs every 5 months). Filter Calculator's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price and in-app purchases there is nothing between them.

Both are free to download. Filter Calculator sells 1 one-off in-app purchase and Bias Daily sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Filter Calculator ships an update every 5 months, Bias Daily every 3 days. The most recent releases landed on October 22, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Filter Calculator | Bias Daily |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 80 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [Satyamoorthy R](https://appshunter.io/developer/1896684007) |

## What reviewers say

### Filter Calculator

[App page](https://appshunter.io/ios/app/filter-calculator-electronics/id6754560517)

Design various types of electronic filters, including RC, RL, RLC, and passive crossovers, with customizable orders and alignments. Instantly obtain component values and Bode insights for lab, classroom, or audio projects. Ideal for engineers, hobbyists, and students.

**Highlights:** Design RC, RL, and RLC filters (2nd-7th order), Butterworth & Chebyshev alignments, Passive crossover calculations, Twin-T notch filter design, Instant component values, Bode insights, Offline-friendly dark mode UI

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $2.99 | one-time |


### Bias Daily

[App page](https://appshunter.io/ios/app/bias-daily/id6769744148)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is Filter Calculator free?

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

### Is Bias Daily free?

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

### Do Filter Calculator or Bias Daily have ads?

Filter Calculator shows ads; Bias Daily does not.

### Which is updated more often, Filter Calculator or Bias Daily?

Filter Calculator ships an update every 5 months, and Bias Daily every 3 days. Most recently, Filter Calculator was updated on October 22, 2026 and Bias Daily 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.*