# calc318 vs Focusly

The clearest difference is update cadence: Focusly at every 10 days against calc318's every 3 months. Focusly also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. calc318 sells 2 in-app purchases, starting at $2.99 per month and Focusly sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

calc318 ships an update every 3 months, Focusly every 10 days. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | calc318 | Focusly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calc318/id6763030413/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Subscription | — |
| Size | 19 MB | 19 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ARTIFICIAL INTELLIGENCE OPTIMIZATION AND SOFTWARE AIOS LLC](https://appshunter.io/developer/1835191566) | [VIET NAM JINGLE SOFTWARE](https://appshunter.io/developer/1541994427) |

## What reviewers say

### calc318

[App page](https://appshunter.io/ios/app/calc318/id6763030413)

Instantly solve 175 ACI 318-19 equations with live computation and interactive charts. Understand equation behavior with sensitivity graphs and clear variable descriptions. Designed for engineers needing quick, accurate calculations and insights.

**Highlights:** 175 ACI 318-19 equations solved instantly, Live computation with unit awareness, Interactive sensitivity graphs, Professionally formatted equations, Complete variable descriptions, Smart search functionality, Recents tab for quick access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| calc318 Pro Monthly | $2.99 | per month |
| calc318 Pro Yearly | $12.99 | per year |


### Focusly

[App page](https://appshunter.io/ios/app/focusly-adhd-routine-planner/id6775431214)

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

**In-app purchases (2)**

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


## Frequently asked questions

### Is calc318 free?

calc318 is free to download, with in-app purchases available.

### Is Focusly free?

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

### Do calc318 or Focusly have ads?

Neither calc318 nor Focusly shows ads.

### Which is updated more often, calc318 or Focusly?

calc318 ships an update every 3 months, and Focusly every 10 days. Most recently, calc318 was updated on October 20, 2026 and Focusly on October 17, 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.*