# 24 Solar Terms vs Altimeter

The clearest difference is review sentiment: 24 Solar Terms at 92% against Altimeter's 0%. Altimeter's advantage is in-app purchases (none vs 2) and iOS requirement (15.0 vs 17.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 24 Solar Terms sells 2 one-off in-app purchases. Altimeter asks for nothing beyond the download.

24 Solar Terms ships an update fortnightly, Altimeter every 3 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 24 Solar Terms | Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/24-solar-terms-widget/id6746864373/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **92.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 50 MB | 29 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [鹏源 邱](https://appshunter.io/developer/1042192961) | [峰 蔺](https://appshunter.io/developer/1638851480) |

## What reviewers say

### 24 Solar Terms

[App page](https://appshunter.io/ios/app/24-solar-terms-widget/id6746864373)

Connect with nature and appreciate life's beauty through traditional Chinese solar terms. This app offers real-time solar term information with beautiful illustrations and detailed explanations, enhancing your daily life with cultural wisdom.

**Highlights:** Real-time solar term cards, Clear timeline of future solar terms, Immersive detail pages, Beautiful desktop widgets, Seasonal color-changing interface, Smooth SwiftUI animations, Full platform adaptation (iPhone/iPad), Offline usage

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 七十二候主题 | $2.99 | one-time |
| 四季斑斓的节气绘主题 | $2.99 | one-time |


### Altimeter

[App page](https://appshunter.io/ios/app/altimeter-altitude-elevation/id6788599346)

Track your altitude and location in real-time using GPS and barometric sensors. Record your journeys, analyze elevation trends with charts, and share your altitude milestones with custom data cards.

**Highlights:** Real-time elevation display, Precise location information, Built-in high-precision compass, Track recording and map playback, Elevation history and trend charts, Check-in photos with watermarks, Altitude sharing cards

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

**In-app purchases:** none


## Frequently asked questions

### Is 24 Solar Terms free?

24 Solar Terms is free to download, with in-app purchases available.

### Is Altimeter free?

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

### Do 24 Solar Terms or Altimeter have ads?

Neither 24 Solar Terms nor Altimeter shows ads.

### Which is updated more often, 24 Solar Terms or Altimeter?

24 Solar Terms ships an update fortnightly, and Altimeter every 3 weeks. Most recently, 24 Solar Terms was updated on October 28, 2026 and Altimeter 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.*