# Math Formulas vs Smart Diary Edu

The clearest difference is review sentiment: Smart Diary Edu at 100% against Math Formulas's 69%. Smart Diary Edu also leads on device support (4 vs 2) and iOS requirement (12.0 vs 17.6). Math Formulas's advantage is update cadence (monthly vs every 2 months) and price ($0.99 vs $2.99). On ads and in-app purchases there is nothing between them.

Math Formulas costs $0.99 and Smart Diary Edu $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Formulas ships an update monthly, Smart Diary Edu every 2 months. The most recent releases landed on November 13, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Math Formulas | Smart Diary Edu |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | **[4.1 (11 ratings)](https://appshunter.io/ios/app/math-formulas-ref-guide/id423545644/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 69.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 18 MB | 23 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Oddrobo Software AB](https://appshunter.io/developer/423545647) | [Matteo D'Ignazio](https://appshunter.io/developer/634863524) |

## What reviewers say

### Math Formulas

[App page](https://appshunter.io/ios/app/math-formulas-ref-guide/id423545644)

Access over 100 high school level math formulas covering algebra, geometry, calculus, trigonometry, probability, and statistics. Includes examples for clarity and a search function to quickly find needed information. Ideal for students, teachers, and math enthusiasts.

**Highlights:** 100+ math formulas, Algebra, geometry, calculus, trig, Probability and statistics, Formulas with examples, Powerful search function, Favorite formulas

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

**In-app purchases:** none


### Smart Diary Edu

[App page](https://appshunter.io/ios/app/smart-diary-edu/id1439717659)

This app helps students manage their academic life by organizing schedules, tracking assignments, and monitoring grades. It offers tools for time management, goal setting, and note-taking, with features like customizable timetables and reminders.

**Highlights:** Add homework, tests, and notes, Manage weekly timetable, Track grades and set goals, Time management organizer, Task reminders and customization, Notes with text formatting, iCloud backup

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Math Formulas free?

Math Formulas costs $0.99, with no in-app purchases.

### Is Smart Diary Edu free?

Smart Diary Edu costs $2.99, with no in-app purchases.

### Do Math Formulas or Smart Diary Edu have ads?

Neither Math Formulas nor Smart Diary Edu shows ads.

### Which is updated more often, Math Formulas or Smart Diary Edu?

Math Formulas ships an update monthly, and Smart Diary Edu every 2 months. Most recently, Math Formulas was updated on November 13, 2026 and Smart Diary Edu on November 2, 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.*