# Hashtag Expert vs Acid

The clearest difference is in-app purchases: Acid at none against Hashtag Expert's 2. Acid also leads on iOS requirement (15.1 vs 17). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Hashtag Expert sells 2 in-app purchases, starting at $3.99 per month. Acid asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 15, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Hashtag Expert | Acid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/acid/id6767066946/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | — | Free |
| Size | 33 MB | 52 MB |
| Requires iOS | 17 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Patrik Racskai](https://appshunter.io/developer/1728193737) | [Fernando Rui](https://appshunter.io/developer/1896366144) |

## What reviewers say

### Hashtag Expert

[App page](https://appshunter.io/ios/app/hashtag-expert/id6739782226)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $3.99 | per month |
| Pro Access | $24.99 | per year |


### Acid

[App page](https://appshunter.io/ios/app/acid/id6767066946)

Connect with communities that matter to you, from niche fandoms to close friends. Create or join groups with dedicated posts, real-time chat, and private messaging. Enjoy a focused, ad-free social experience built for genuine conversations.

**Highlights:** Create or join communities, Posts, comments, and reactions, Real-time chat rooms, Private direct messages, Customizable user profiles, Notification system

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

**In-app purchases:** none


## Frequently asked questions

### Is Hashtag Expert free?

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

### Is Acid free?

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

### Do Hashtag Expert or Acid have ads?

Neither Hashtag Expert nor Acid shows ads.

### Which is updated more often, Hashtag Expert or Acid?

Hashtag Expert ships an update every 5 days, and Acid every 5 days. Most recently, Hashtag Expert was updated on October 15, 2026 and Acid on October 22, 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.*