# AIVox vs postin

The clearest difference is in-app purchases: AIVox at none against postin's 3. AIVox also leads on iOS requirement (15.1 vs 26.0). postin's advantage is ads (none vs shown) and update cadence (every 2 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. postin sells 3 in-app purchases, starting at $1.99 per month. AIVox asks for nothing beyond the download.

AIVox ships an update every 3 weeks, postin every 2 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | AIVox | postin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 58 MB | 47 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Cattle Software](https://appshunter.io/developer/1704645956) | [keishi yokoi](https://appshunter.io/developer/1861661371) |

## What reviewers say

### AIVox

[App page](https://appshunter.io/ios/app/aivox/id6764459694)

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

**In-app purchases:** none


### postin

[App page](https://appshunter.io/ios/app/postin-postcard-sns/id6794994524)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription Plan (Monthly) | $1.99 | per month |
| Annual Subscription | $19.99 | per year |
| 5 Stamps | $0.29 | one-time |


## Frequently asked questions

### Is AIVox free?

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

### Is postin free?

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

### Do AIVox or postin have ads?

AIVox shows ads; postin does not.

### Which is updated more often, AIVox or postin?

AIVox ships an update every 3 weeks, and postin every 2 days. Most recently, AIVox was updated on October 24, 2026 and postin on October 15, 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.*