# OnDevice vs Tapproval

The clearest difference is in-app purchases: OnDevice at none against Tapproval's 2. Tapproval's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Tapproval sells 2 one-off in-app purchases. OnDevice asks for nothing beyond the download.

OnDevice ships an update every 3 days, Tapproval every 2 days. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | OnDevice | Tapproval |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ondevice-local-ai-studio/id6770114399/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 199 MB | 4 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [MESUT CAN YAGCI](https://appshunter.io/developer/1878989701) | [Marc Dines](https://appshunter.io/developer/6801761713) |

## What reviewers say

### OnDevice

[App page](https://appshunter.io/ios/app/ondevice-local-ai-studio/id6770114399)

This app provides a local AI workbench for your iPhone, running open-source language and vision models entirely on-device. Features include live camera captioning, hands-free voice conversation, and code assistance with various models. It prioritizes privacy with no servers, API keys, or telemetry.

**Highlights:** On-device LLM and VLM execution, Live camera captioning, Hands-free voice conversation, Code assistant with multiple models, Document scanner and live OCR, Model benchmarking and A/B comparison, Mac pairing for inference server

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

**In-app purchases:** none


### Tapproval

[App page](https://appshunter.io/ios/app/tapproval/id6805869018)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee for the developer | $1.00 | one-time |
| Unlock Forever | $5.00 | one-time |


## Frequently asked questions

### Is OnDevice free?

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

### Is Tapproval free?

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

### Do OnDevice or Tapproval have ads?

Neither OnDevice nor Tapproval shows ads.

### Which is updated more often, OnDevice or Tapproval?

OnDevice ships an update every 3 days, and Tapproval every 2 days. Most recently, OnDevice was updated on October 25, 2026 and Tapproval on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*