# Formalize vs Simark

The clearest difference is review sentiment: Simark at 83% against Formalize's 25%. Simark also leads on price (Free vs $1.99) and rating (5.0 vs 2.6). Formalize's advantage is in-app purchases (none vs 2) and ratings volume (10 vs 1). On ads and device support there is nothing between them.

Simark is free to download; Formalize costs $1.99 up front. Simark sells 2 in-app purchases, starting at $1.99 per month. Formalize asks for nothing beyond the download.

Simark holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Formalize has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 25% of Formalize's written reviews are positive against 83% of Simark's.

Formalize ships an update every 9 months, Simark every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Formalize | Simark |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.6 (10 ratings)](https://appshunter.io/ios/app/formalize/id1293129912/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simark-markdown-notebook/id6456388881/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 25.0% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 51 MB | 7 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ben Hambrecht](https://appshunter.io/developer/1035136614) | [冠为 周](https://appshunter.io/developer/1626014918) |

## What reviewers say

### Formalize

[App page](https://appshunter.io/ios/app/formalize/id1293129912)

Type mathematical equations and symbols directly on your iPhone or iPad. This keyboard extension offers intuitive one-handed access to over 100 symbols, producing professionally typeset formulas. Easily export your creations as PNG or TeX to use in any app.

**Highlights:** Mathematical keyboard extension, Over 100 symbols, One-handed operation, Professionally typeset formulas, PNG export, TeX export

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

**In-app purchases:** none


### Simark

[App page](https://appshunter.io/ios/app/simark-markdown-notebook/id6456388881)

A powerful note-taking application that leverages Markdown for efficient writing and organization. It offers cloud synchronization, distraction-free editing, and internal note linking to enhance productivity across devices.

**Highlights:** Cloud Sync across devices, Distraction-free writing interface, Advanced Markdown formatting, Internal note linking, Share notes on the web, Auto dark theme

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simark Sync | $1.99 | per month |
| Simark Sync | $17.99 | per year |


## Frequently asked questions

### Is Formalize free?

Formalize costs $1.99, with no in-app purchases.

### Is Simark free?

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

### Which has better reviews, Formalize or Simark?

Simark is rated higher. Formalize averages 2.6 out of 5 from 10 ratings, while Simark averages 5.0 from 1 ratings.

### Do Formalize or Simark have ads?

Neither Formalize nor Simark shows ads.

### Which is updated more often, Formalize or Simark?

Formalize ships an update every 9 months, and Simark every 2 days. Most recently, Formalize was updated on October 24, 2026 and Simark on October 25, 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.*