# Formudrag vs Mumu Calculator

The clearest difference is ads: Formudrag at none against Mumu Calculator's shown. Formudrag also leads on device support (4 vs 2). Mumu Calculator's advantage is update cadence (every 3 weeks vs every 2 months). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Formudrag sells 7 in-app purchases, starting at $1.99 per month and Mumu Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Formudrag ships an update every 2 months, Mumu Calculator every 3 weeks. The most recent releases landed on September 24, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Formudrag | Mumu Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mumu-calculator/id6774240639/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 94 MB | 10 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [欣 王](https://appshunter.io/developer/1816555255) | [楠 李](https://appshunter.io/developer/6773365034) |

## What reviewers say

### Formudrag

[App page](https://appshunter.io/ios/app/formudrag/id6746382275)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $12.99 | per year |
| Drag Indicator Styles | $1.99 | one-time |
| Formula History Access | $2.99 | one-time |
| Export Formats | $4.99 | one-time |
| Lifetime | $29.99 | one-time |
| Lifetime | $39.99 | one-time |


### Mumu Calculator

[App page](https://appshunter.io/ios/app/mumu-calculator/id6774240639)

This app allows you to edit past calculations, making it easy to correct mistakes or continue complex math problems. It offers features like adding notes, tracking subtotals, and saving archives for organized financial management and everyday use.

**Highlights:** Edit past calculations with precise cursor placement, Add notes to calculation groups, Track subtotals, Save and reopen calculation archives, Restore deleted records, Copy selected records

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $2.99 | one-time |


## Frequently asked questions

### Is Formudrag free?

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

### Is Mumu Calculator free?

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

### Do Formudrag or Mumu Calculator have ads?

Mumu Calculator shows ads; Formudrag does not.

### Which is updated more often, Formudrag or Mumu Calculator?

Formudrag ships an update every 2 months, and Mumu Calculator every 3 weeks. Most recently, Formudrag was updated on September 24, 2026 and Mumu Calculator on August 29, 2026.

---

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