# i vs GridNote SLP

The clearest difference is price: GridNote SLP at Free against i's $4.99. GridNote SLP also leads on update cadence (every 3 days vs every 7 months). i's advantage is in-app purchases (none vs 1) and ratings volume (3 vs 1). On rating, ads and device support there is nothing between them.

GridNote SLP is free to download; i costs $4.99 up front. GridNote SLP sells 1 one-off in-app purchase. i asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for i against 5.0 for GridNote SLP. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

i ships an update every 7 months, GridNote SLP every 3 days. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | i | GridNote SLP |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/i-logo/id435280247/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/gridnote-slp/id6806736586/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 81.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | Paid | **Freemium** |
| Size | 6 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPad, Mac | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [CROMBEZ Emmanuel](https://appshunter.io/developer/375656695) | [SETH MICHAEL HADLEY](https://appshunter.io/developer/6804568251) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-logo/id435280247)

This app is an interpreted programming language designed for educational purposes, focusing on functional programming capabilities. It allows users to test calculations, recursion, and array usage, serving as a teaching tool rather than for developing full applications.

**Highlights:** Functional programming, Global and local variables, Polish notation calculations, Recursive testing, Array usage, Interpreted language

**In-app purchases:** none


### GridNote SLP

[App page](https://appshunter.io/ios/app/gridnote-slp/id6806736586)

This app helps school speech-language pathologists manage their weekly schedules and document therapy sessions. It offers features for tracking student progress, session notes, and billing status, with iCloud syncing across Apple devices.

**Highlights:** Weekly therapy grid, Session documentation, Medicaid-style billing status, Student caseload management, iCloud syncing, CSV export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GridNote Unlock | $9.99 | one-time |


## Frequently asked questions

### Is i free?

i costs $4.99, with no in-app purchases.

### Is GridNote SLP free?

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

### Which has better reviews, i or GridNote SLP?

i and GridNote SLP are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do i or GridNote SLP have ads?

Neither i nor GridNote SLP shows ads.

### Which is updated more often, i or GridNote SLP?

i ships an update every 7 months, and GridNote SLP every 3 days. Most recently, i was updated on October 21, 2026 and GridNote SLP on October 14, 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.*