# Day Stacks vs Personal.AI

The clearest difference is in-app purchases: Personal.AI at none against Day Stacks's 1. Personal.AI also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Day Stacks sells 1 one-off in-app purchase. Personal.AI asks for nothing beyond the download.

Day Stacks ships an update every 10 days, Personal.AI weekly. The most recent releases landed on October 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Day Stacks | Personal.AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/personalai/id6760272621/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | — | Free |
| Size | 7 MB | 15 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kazuki oshino](https://appshunter.io/developer/1588828820) | [Jagadeesh Raghu](https://appshunter.io/developer/1876703006) |

## What reviewers say

### Day Stacks

[App page](https://appshunter.io/ios/app/day-stacks/id6757662611)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Personal.AI

[App page](https://appshunter.io/ios/app/personalai/id6760272621)

An on-device AI assistant that processes information locally for enhanced privacy and structured understanding. It offers web search, local document querying, and agent mode for complex reasoning, all without sending data to external servers.

**Highlights:** On-device AI processing, Web search integration, Local RAG for document querying, Agent mode for multi-step reasoning, Offline AI experience, Support for quantized models

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

**In-app purchases:** none


## Frequently asked questions

### Is Day Stacks free?

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

### Is Personal.AI free?

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

### Do Day Stacks or Personal.AI have ads?

Day Stacks shows ads; Personal.AI does not.

### Which is updated more often, Day Stacks or Personal.AI?

Day Stacks ships an update every 10 days, and Personal.AI weekly. Most recently, Day Stacks was updated on October 28, 2026 and Personal.AI on October 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.*