# CozyKey Pro vs Custom Formulas

The clearest difference is rating: Custom Formulas at 5.0 against CozyKey Pro's 4.2. Custom Formulas also leads on in-app purchases (none vs 15) and update cadence (every 5 days vs every 4 months). CozyKey Pro's advantage is ratings volume (102 vs 1) and price ($2.99 vs $3.99). On ads, chart position and device support there is nothing between them.

CozyKey Pro costs $2.99 and Custom Formulas $3.99 up front. CozyKey Pro sells 15 one-off in-app purchases. Custom Formulas asks for nothing beyond the download.

Custom Formulas holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: CozyKey Pro has 102 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 77% of CozyKey Pro's written reviews are positive against 100% of Custom Formulas's.

CozyKey Pro ships an update every 4 months, Custom Formulas every 5 days. The most recent releases landed on September 29, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CozyKey Pro | Custom Formulas |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | [4.2 (102 ratings)](https://appshunter.io/ios/app/cozykey-pro/id1151323591/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/custom-formulas/id1623368630/reviews)** |
| Number of ratings | **102** | 1 |
| Positive reviews | 76.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#149** | #186 |
| Size | 24 MB | 1 MB |
| Requires iOS | **11.1** | 15.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TIAN-KAI CHANG](https://appshunter.io/developer/1083924091) | [Anthony Dunk](https://appshunter.io/developer/704471943) |

## What reviewers say

### CozyKey Pro

[App page](https://appshunter.io/ios/app/cozykey-pro/id1151323591)

**Currently charting:** #149 Top Paid · Utilities (US App Store)

This keyboard app offers larger keys and a familiar layout for a more comfortable and precise typing experience on iPhones. It prioritizes security by not requiring full access and includes features like a dedicated punctuation keyboard and cursor control.

**Highlights:** Larger keys for comfort, Familiar keyboard layout, No full access required for security, One-handed typing support, Dedicated punctuation keyboard, Precise cursor control with arrow keys, Word prediction and auto-correction

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pink Theme | Free | one-time |
| Gold Theme | Free | one-time |
| Classic Silver Theme | $0.99 | one-time |
| Neon Green Theme | $0.99 | one-time |
| Neon Peach Theme | $0.99 | one-time |
| Premium Red Theme | $0.99 | one-time |
| Premium Black Theme | $0.99 | one-time |
| Classic Rose Gold Theme | $0.99 | one-time |
| Premium Blue Theme | $0.99 | one-time |
| Neon Orange Theme | $0.99 | one-time |
| Fancy Blue Theme | $0.99 | one-time |
| Classic Theme Bundle | $1.99 | one-time |
| Fancy Theme Bundle | $1.99 | one-time |
| Neon Theme Bundle | $1.99 | one-time |
| Premium Theme Bundle | $1.99 | one-time |

**What reviewers like**

- 👍 Larger keys for easier typing
- 🎨 Nice colors and themes available
- ⌨️ Better than the stock keyboard
- 👌 Easy to use
- 💡 Useful suggestion bar

**What reviewers complain about**

- 👎 Makes more mistakes than default keyboard
- 💰 Paid app with more in-app purchases for colors
- 🐛 Autocorrect issues
- 🤔 Asked for review before use
- ⚠️ Apostrophe key placement inconvenient

**Reported bugs**

- Autocorrect prepends extra letters
- Inconsistent key presses (n for space, r for t)
- Apostrophe key placement inconvenient

**Requested features**

- Adjustable key size
- Row of number keys at the top
- Option to remove suggestion bar
- Swipe type functionality
- Integration with dark and light mode


### Custom Formulas

[App page](https://appshunter.io/ios/app/custom-formulas/id1623368630)

**Currently charting:** #186 Top Paid · Utilities (US App Store)

This utility app allows users to create and manage complex calculations with multiple inputs and outputs. Formulas can be linked, grouped into categories, and customized for display precision. Share your custom calculations easily via email.

**Highlights:** Multiple input/output formula support, Linked formulas via variable names, Formula categorization, Customizable variable display order, Adjustable output decimal precision, Email formula sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is CozyKey Pro free?

CozyKey Pro costs $2.99, and also offers in-app purchases.

### Is Custom Formulas free?

Custom Formulas costs $3.99, with no in-app purchases.

### Which has better reviews, CozyKey Pro or Custom Formulas?

Custom Formulas is rated higher. CozyKey Pro averages 4.2 out of 5 from 102 ratings, while Custom Formulas averages 5.0 from 1 ratings.

### Do CozyKey Pro or Custom Formulas have ads?

Neither CozyKey Pro nor Custom Formulas shows ads.

### Which is updated more often, CozyKey Pro or Custom Formulas?

CozyKey Pro ships an update every 4 months, and Custom Formulas every 5 days. Most recently, CozyKey Pro was updated on September 29, 2026 and Custom Formulas on September 18, 2026.

### Which is more popular, CozyKey Pro or Custom Formulas?

CozyKey Pro currently peaks at #149 in the App Store charts, and Custom Formulas at #186. Chart position reflects recent download velocity rather than total install base.

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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.*