# SRGM vs Harmonium Lessons

The clearest difference is iOS requirement: SRGM at 15.1 against Harmonium Lessons's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SRGM sells 2 in-app purchases, starting at $6.99 per month and Harmonium Lessons sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

SRGM ships an update every 11 days, Harmonium Lessons every 2 weeks. The most recent releases landed on September 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SRGM | Harmonium Lessons |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 weeks |
| Size | 58 MB | 10 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Prithwin Rajeeva](https://appshunter.io/developer/1892593169) | [Mitaanshu Agarwal](https://appshunter.io/developer/1896724075) |

## What reviewers say

### SRGM

[App page](https://appshunter.io/ios/app/srgm-sargam-notation/id6762034556)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SRGM Pro Monthly | $6.99 | per month |
| SRGM Pro Yearly | $49.99 | per year |


### Harmonium Lessons

[App page](https://appshunter.io/ios/app/harmonium-lessons-soloist/id6776353071)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Harmonium Monthl | $4.99 | per month |
| Harmonium Yearl | $39.99 | per year |


## Frequently asked questions

### Is SRGM free?

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

### Is Harmonium Lessons free?

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

### Do SRGM or Harmonium Lessons have ads?

Neither SRGM nor Harmonium Lessons shows ads.

### Which is updated more often, SRGM or Harmonium Lessons?

SRGM ships an update every 11 days, and Harmonium Lessons every 2 weeks. Most recently, SRGM was updated on September 25, 2026 and Harmonium Lessons 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.*