# Khmer Physic Formulas vs SIS MoEYS

The clearest difference is ads: SIS MoEYS at none against Khmer Physic Formulas's shown. SIS MoEYS also leads on update cadence (every 2 weeks vs every 19 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Khmer Physic Formulas ships an update every 19 months, SIS MoEYS every 2 weeks. The most recent releases landed on September 21, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Khmer Physic Formulas | SIS MoEYS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/khmer-physic-formulas/id1076144702/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 62 MB | 24 MB |
| Requires iOS | **12.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cheab Kunthea](https://appshunter.io/developer/1073035288) | [Metfone](https://appshunter.io/developer/961045207) |

## What reviewers say

### Khmer Physic Formulas

[App page](https://appshunter.io/ios/app/khmer-physic-formulas/id1076144702)

Access a comprehensive collection of physics formulas for various grade levels and specialized fields. This app offers a simple, fast, and smooth user interface for easy formula lookup.

**Highlights:** Physics formulas for grades 7-12, Engineering physics formulas, Basic physics formulas, SI Units and constants, Formula symbol reference, Simple and fast UI

**Features:** macOS Compatibility

**In-app purchases:** none


### SIS MoEYS

[App page](https://appshunter.io/ios/app/sis-moeys/id6498872963)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Khmer Physic Formulas free?

Khmer Physic Formulas is free to download, with no in-app purchases.

### Is SIS MoEYS free?

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

### Do Khmer Physic Formulas or SIS MoEYS have ads?

Khmer Physic Formulas shows ads; SIS MoEYS does not.

### Which is updated more often, Khmer Physic Formulas or SIS MoEYS?

Khmer Physic Formulas ships an update every 19 months, and SIS MoEYS every 2 weeks. Most recently, Khmer Physic Formulas was updated on September 21, 2026 and SIS MoEYS on September 15, 2026.

---

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