# Kase₄ vs Solo

The clearest difference is price: Solo at Free against Kase₄'s $9.99. Solo also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (13.0 vs 15.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Solo is free to download; Kase₄ costs $9.99 up front. Kase₄ sells 4 one-off in-app purchases and Solo sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Kase₄ against 5.0 for Solo. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Kase₄ ships an update every 2 months, Solo every 3 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Kase₄ | Solo |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/kase-your-personal-database/id1644975888/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/solo-text-yourself/id6760162035/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Paid | **Freemium** |
| Size | 17 MB | 49 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kenneth Wong](https://appshunter.io/developer/1275992151) | [OOTH](https://appshunter.io/developer/1882926507) |

## What reviewers say

### Kase₄

[App page](https://appshunter.io/ios/app/kase-your-personal-database/id1644975888)

This app allows you to create and manage your own personal databases on your device. It offers flexibility in designing structures to track anything important, with features like inter-linked data, full-text search, and various field types. Your data remains private and accessible offline.

**Highlights:** Design custom databases, Inter-linked data, Full-text search with NLP, Multiple field types, Markdown support, Passcode and biometric lock, Data visualization (Formatters), OCR for text recognition

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip: Dollar | $1.00 | one-time |
| Tip: Coffee | $2.00 | one-time |
| Tip: Coffee, CA | $4.00 | one-time |
| Tip: Caffè Mocha | $5.00 | one-time |


### Solo

[App page](https://appshunter.io/ios/app/solo-text-yourself/id6760162035)

This app functions like a personal chat to save thoughts, links, photos, and to-dos. It automatically organizes your saved items into smart categories and allows you to set reminders. Sync your notes across multiple devices for seamless access.

**Highlights:** Personal chat interface for saving notes, Automatic categorization of saved items, Reminders for important messages, Rich link previews, Photo and image saving, Cross-device synchronization

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is Kase₄ free?

Kase₄ costs $9.99, and also offers in-app purchases.

### Is Solo free?

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

### Which has better reviews, Kase₄ or Solo?

Kase₄ and Solo are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Kase₄ or Solo have ads?

Neither Kase₄ nor Solo shows ads.

### Which is updated more often, Kase₄ or Solo?

Kase₄ ships an update every 2 months, and Solo every 3 days. Most recently, Kase₄ was updated on October 24, 2026 and Solo on October 10, 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.*