# IRIS SmartLF vs Patterns Calc Pro

The clearest difference is review sentiment: Patterns Calc Pro at 100% against IRIS SmartLF's 19%. Patterns Calc Pro also leads on update cadence (every 2 months vs every 13 months). IRIS SmartLF's advantage is price (Free vs $12.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

IRIS SmartLF is free to download; Patterns Calc Pro costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IRIS SmartLF ships an update every 13 months, Patterns Calc Pro every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | IRIS SmartLF | Patterns Calc Pro |
| --- | --- | --- |
| Price | **Free** | $12.99 |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/iris-smartlf/id1435305248/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 18.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 166 MB | 105 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [IRIS OHYAMA INC.](https://appshunter.io/developer/1354368086) | [Hikaru Satomi](https://appshunter.io/developer/1517351491) |

## What reviewers say

### IRIS SmartLF

[App page](https://appshunter.io/ios/app/iris-smartlf/id1435305248)

Remotely manage your smart lights from anywhere. Adjust brightness levels and schedule timers for automatic on/off cycles. Ensure your home is lit just the way you want it, even when you're not there.

**Highlights:** Remote light control, Brightness adjustment, Scheduling timers, Automated on/off

**In-app purchases:** none


### Patterns Calc Pro

[App page](https://appshunter.io/ios/app/patterns-calc-pro-calculator/id1549687006)

A visually customizable calculator with a focus on ease of use and quick calculations. Offers one-handed mode, adjustable colors, and intuitive memo functions. Supports iPad and provides a simple interface for everyday math needs.

**Highlights:** One-handed mode, Automatic color changes, Easy screenshot sharing, Multiple beautiful patterns, Large, readable numbers, Intuitive memo function, Drag and drop button customization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IRIS SmartLF free?

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

### Is Patterns Calc Pro free?

Patterns Calc Pro costs $12.99, with no in-app purchases.

### Do IRIS SmartLF or Patterns Calc Pro have ads?

Neither IRIS SmartLF nor Patterns Calc Pro shows ads.

### Which is updated more often, IRIS SmartLF or Patterns Calc Pro?

IRIS SmartLF ships an update every 13 months, and Patterns Calc Pro every 2 months. Most recently, IRIS SmartLF was updated on November 6, 2026 and Patterns Calc Pro on November 3, 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.*