# Tacpac vs Oti

The clearest difference is update cadence: Oti at every 5 months against Tacpac's every 45 months. Tacpac's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tacpac ships an update every 45 months, Oti every 5 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Tacpac | Oti |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 15 MB | 32 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [TACPAC LTD](https://appshunter.io/developer/1216661923) | [TTS Group Limited](https://appshunter.io/developer/500131642) |

## What reviewers say

### Tacpac

[App page](https://appshunter.io/ios/app/tacpac/id1216661924)

This app offers specially created music sets designed to benefit individuals with sensory processing difficulties, including children, adults, and those with memory loss or sensory impairment. All music can be played offline after logging in with your account details.

**Highlights:** Sensory processing support, Music sets for various needs, Offline playback, Website account sync, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### Oti

[App page](https://appshunter.io/ios/app/oti-bot/id1605747632)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tacpac free?

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

### Is Oti free?

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

### Do Tacpac or Oti have ads?

Neither Tacpac nor Oti shows ads.

### Which is updated more often, Tacpac or Oti?

Tacpac ships an update every 45 months, and Oti every 5 months. Most recently, Tacpac was updated on November 2, 2026 and Oti on November 7, 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.*