# Spelling Ace 4th Grade vs HERD SD

The clearest difference is in-app purchases: HERD SD at none against Spelling Ace 4th Grade's 11. HERD SD also leads on update cadence (every 2 days vs weekly). Spelling Ace 4th Grade's advantage is iOS requirement (11.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. Spelling Ace 4th Grade sells 11 in-app purchases, starting at $6.99 per month. HERD SD asks for nothing beyond the download.

Spelling Ace 4th Grade ships an update weekly, HERD SD every 2 days. The most recent releases landed on October 27, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Spelling Ace 4th Grade | HERD SD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (59 ratings)](https://appshunter.io/ios/app/spelling-ace-4th-grade/id1504956595/reviews)** | — |
| Number of ratings | **59** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 88 MB | 33 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Class Ace LLC](https://appshunter.io/developer/1303170818) | [Grazielle Cioletti](https://appshunter.io/developer/1825411960) |

## What reviewers say

### Spelling Ace 4th Grade

[App page](https://appshunter.io/ios/app/spelling-ace-4th-grade/id1504956595)

Master 4th-grade spelling with engaging lessons and adaptive practice. Includes text-to-speech and auto-play features for independent learning. A single subscription unlocks all apps and lessons from the developer.

**Highlights:** Read-along lessons, Adaptive spelling practice, Text-to-speech functionality, Auto-play lessons, Student and teacher profiles, Progress tracking and gamification

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spelling 4th Grade 3 Students | $6.99 | per month |
| Spelling 4th Grade 4 Students | $8.99 | per month |
| Spelling 4 Monthly Parent | $14.99 | per month |
| Spelling 4th Yearly 1 Student | $19.99 | per year |
| Spelling 4th Yearly 2 Students | $29.99 | per year |
| Spelling 4th Yearly 3 Students | $39.99 | per year |
| Spelling 4th Yearly 5 Students | $59.99 | per year |
| Spelling 4th Yearly 7 Students | $79.99 | per year |
| Spelling 4th Yearly 8 Students | $89.99 | per year |
| Spelling 4th Yearly 9 Students | $99.99 | per year |
| Spelling 4 Yearly 10 Students | $109.99 | per year |


### HERD SD

[App page](https://appshunter.io/ios/app/herd-sd/id6748356498)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spelling Ace 4th Grade free?

Spelling Ace 4th Grade is free to download, with in-app purchases available.

### Is HERD SD free?

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

### Do Spelling Ace 4th Grade or HERD SD have ads?

Neither Spelling Ace 4th Grade nor HERD SD shows ads.

### Which is updated more often, Spelling Ace 4th Grade or HERD SD?

Spelling Ace 4th Grade ships an update weekly, and HERD SD every 2 days. Most recently, Spelling Ace 4th Grade was updated on October 27, 2026 and HERD SD on September 30, 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.*