# Saturn Calendar vs MathAce

The clearest difference is in-app purchases: Saturn Calendar at none against MathAce's 3. Saturn Calendar also leads on update cadence (every 4 days vs every 2 weeks) and chart position (#45 vs unranked). MathAce's advantage is review sentiment (59% vs 35%). On price, rating, ads and device support there is nothing between them.

Both are free to download. MathAce sells 3 in-app purchases, starting at $6.99 per 7 days. Saturn Calendar asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Saturn Calendar against 4.7 for MathAce. That said, the two scores are not equally well evidenced: Saturn Calendar has 68K ratings behind it against 8.8K, so its average is the more settled of the two. Written reviews are what separate them: 35% of Saturn Calendar's written reviews are positive against 59% of MathAce's.

Saturn Calendar ships an update every 4 days, MathAce every 2 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Saturn Calendar | MathAce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (68K ratings)](https://appshunter.io/ios/app/saturn-calendar/id1454483188/reviews) | **[4.7 (8.8K ratings)](https://appshunter.io/ios/app/mathace-solve-study-question/id6636481467/reviews)** |
| Number of ratings | **68K** | 8.8K |
| Positive reviews | 34.6% of reviews | **58.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#45** | — |
| Size | 219 MB | 51 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Saturn Technologies Inc.](https://appshunter.io/developer/1461734956) | [精精 唐](https://appshunter.io/developer/1762202088) |

## What reviewers say

### Saturn Calendar

[App page](https://appshunter.io/ios/app/saturn-calendar/id1454483188)

**Currently charting:** #45 Top Free · Productivity (US App Store)

This app is designed for students to manage complex school schedules, including rotating periods and group events. It simplifies planning with friends and classmates, allowing users to share schedules and coordinate activities easily. Stay organized for high school and college with features tailored to student life.

**Highlights:** Rotating period support, Block schedule management, Social schedule sharing, Group event planning, Customizable school formats, Friend and group organization

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Helpful for time management
- 👍 Useful for connecting with classmates
- 🔒 Secure and private
- 🎨 Beautifully designed app
- 🗓️ Accurate class schedules

**What reviewers complain about**

- 🐛 Bugs and glitches
- 🔒 Privacy concerns with data collection
- 📢 Excessive notifications
- 🤖 Automated features not customizable
- 🤔 Confusing verification process

**Reported bugs**

- Incorrect class schedules
- Verification issues for some schools
- Crashes when editing schedule
- Syncing problems between devices

**Requested features**

- Add dark mode option
- Implement club/activity scheduling
- Allow custom bell schedule settings
- Integrate with grade/assignment tracking
- Provide widgets for home screen


### MathAce

[App page](https://appshunter.io/ios/app/mathace-solve-study-question/id6636481467)

This app helps students solve math problems across various subjects like algebra, geometry, and calculus. It offers instant photo problem solving, an advanced calculator, graphing tools, and step-by-step equation solutions to aid in understanding and mastering math concepts.

**Highlights:** Instant photo problem solving, Advanced calculator with unit conversions, Equation solver with step-by-step solutions, Graphing and visualization of functions, Handles algebra, geometry, and calculus

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MathAce Pro | $6.99 | per 7 days |
| AnsAce AI Premium | $9.99 | per month |
| AnsAce AI Premium | $79.99 | per year |

**What reviewers like**

- 🚀 Accurate answers
- 💡 Step-by-step explanations
- 👍 Helpful for improving grades
- 👍 Works for various subjects

**What reviewers complain about**

- 🐛 Inaccurate or incorrect answers
- 🔍 Limited free usage
- 🔍 Subscription required for more uses
- 🔍 Frequent ads

**Reported bugs**

- Answers not matching the problem
- App freezing or crashing
- Incompatible with older devices

**Requested features**

- Remove usage limits
- Bring back old Gauth app
- Add writing assistant feature


## Frequently asked questions

### Is Saturn Calendar free?

Saturn Calendar is free to download, with no in-app purchases.

### Is MathAce free?

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

### Which has better reviews, Saturn Calendar or MathAce?

MathAce is rated higher. Saturn Calendar averages 4.7 out of 5 from 68K ratings, while MathAce averages 4.7 from 8.8K ratings.

### Do Saturn Calendar or MathAce have ads?

Neither Saturn Calendar nor MathAce shows ads.

### Which is updated more often, Saturn Calendar or MathAce?

Saturn Calendar ships an update every 4 days, and MathAce every 2 weeks. Most recently, Saturn Calendar was updated on October 29, 2026 and MathAce on October 28, 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.*