# Chem Calc vs FlowFocus

The clearest difference is rating: Chem Calc at 5.0 against FlowFocus's 4.5. Chem Calc also leads on update cadence (every 9 days vs every 6 months). FlowFocus's advantage is in-app purchases (none vs 3) and iOS requirement (17.0 vs 26.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Chem Calc sells 3 in-app purchases, starting at $1.99 per month. FlowFocus asks for nothing beyond the download.

Chem Calc holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Chem Calc ships an update every 9 days, FlowFocus every 6 months. The most recent releases landed on November 8, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Chem Calc | FlowFocus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chem-calc-chemistry-solver/id6744528457/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/flowfocus-simple-focus-timer/id6748028221/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 80 MB | 43 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fanis Kalimullin](https://appshunter.io/developer/1670198215) | [Suzanne Garrett](https://appshunter.io/developer/1808066473) |

## What reviewers say

### Chem Calc

[App page](https://appshunter.io/ios/app/chem-calc-chemistry-solver/id6744528457)

This chemistry calculator helps students, teachers, and professionals solve chemical problems, balance equations, and perform accurate calculations. It features an interactive periodic table, molar mass calculator, and tools for gas laws and concentrations. Most functions work offline.

**Highlights:** Interactive Periodic Table with element properties, Reaction search and automatic equation balancing, Molar mass calculator for chemical formulas, pH and Acid–Base calculations, Ideal Gas Law calculator, Concentration and dilution tools, Calculation history and unit converter

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro subscription (1 Month) | $1.99 | per month |
| Premium Yearly (1 year) | $19.99 | per year |
| Premium | $5.99 | one-time |


### FlowFocus

[App page](https://appshunter.io/ios/app/flowfocus-simple-focus-timer/id6748028221)

This app offers a minimalist Pomodoro timer with integrated task management. It helps users stay focused with customizable work and break intervals, smooth animations, and haptic feedback. Track your progress with session counts and tailor the experience to your workflow.

**Highlights:** Customizable Pomodoro timer, Integrated task management, Minimalist and modern design, Session tracking, Smooth animations and haptic feedback, Flexible work/break durations

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

**In-app purchases:** none


## Frequently asked questions

### Is Chem Calc free?

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

### Is FlowFocus free?

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

### Which has better reviews, Chem Calc or FlowFocus?

Chem Calc is rated higher. Chem Calc averages 5.0 out of 5 from 1 ratings, while FlowFocus averages 4.5 from 2 ratings.

### Do Chem Calc or FlowFocus have ads?

Neither Chem Calc nor FlowFocus shows ads.

### Which is updated more often, Chem Calc or FlowFocus?

Chem Calc ships an update every 9 days, and FlowFocus every 6 months. Most recently, Chem Calc was updated on November 8, 2026 and FlowFocus on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*