# Spring Airlines vs Realtime Altimeter

The clearest difference is rating: Realtime Altimeter at 4.7 against Spring Airlines's 3.0. Realtime Altimeter also leads on ratings volume (442 vs 20) and review sentiment (77% vs 64%). Spring Airlines's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Realtime Altimeter sells 1 one-off in-app purchase. Spring Airlines asks for nothing beyond the download.

Realtime Altimeter holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Realtime Altimeter has 442 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 64% of Spring Airlines's written reviews are positive against 77% of Realtime Altimeter's.

Spring Airlines ships an update every 10 days, Realtime Altimeter every 2 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Spring Airlines | Realtime Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (20 ratings)](https://appshunter.io/ios/app/spring-airlines/id460033035/reviews) | **[4.7 (442 ratings)](https://appshunter.io/ios/app/realtime-altimeter/id1039285626/reviews)** |
| Number of ratings | 20 | **442** |
| Positive reviews | 64.0% of reviews | **76.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 98 MB | 6 MB |
| Requires iOS | 15.0 | **13** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [春秋航空 Spring Airlines](https://appshunter.io/developer/460033038) | [Zhenlai Xia](https://appshunter.io/developer/1435731218) |

## What reviewers say

### Spring Airlines

[App page](https://appshunter.io/ios/app/spring-airlines/id460033035)

Book flights, hotels, and manage your travel with this airline app. Find exclusive deals and enjoy convenient services like online check-in and seat selection. Your gateway to affordable travel across China and Asia.

**Highlights:** Air ticket booking, Hotel reservations, Flight status inquiries, Ancillary service purchases, Online check-in, Seat selection, Ticket refunds and changes

**Features:** macOS Compatibility, iMessage stickers

**In-app purchases:** none


### Realtime Altimeter

[App page](https://appshunter.io/ios/app/realtime-altimeter/id1039285626)

This app provides real-time altitude readings, even without an internet connection. It also includes a compass, velocimeter, and a camera that can watermark photos with location data, making it ideal for travelers and outdoor adventurers.

**Highlights:** Offline altimeter, Real-time altitude, Integrated compass, Velocimeter for speed, Watermark camera with GPS data

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 📸 Captures photos with altitude watermark
- ✈️ Useful for travel and outdoor activities
- 🆓 Free to use
- 👍 Very practical and useful
- 📍 Provides location and altitude information

**What reviewers complain about**

- 🧭 Compass missing East/West points
- 📉 Barometric pressure inaccurate
- ⚖️ Altitude readings fluctuate
- 📷 Cannot take landscape photos
- 📶 Not always immediate altitude reaction without network

**Reported bugs**

- Compass missing cardinal points
- Inaccurate barometric pressure readings
- Fluctuating and inaccurate altitude readings
- Watch app not installing after purchase
- Altimeter not working during flight

**Requested features**

- Announce current altitude based on time or altitude
- Larger font size for speed readout
- Option to switch altitude and speed display positions
- Convert camera location address to text
- Add barometric pressure display


## Frequently asked questions

### Is Spring Airlines free?

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

### Is Realtime Altimeter free?

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

### Which has better reviews, Spring Airlines or Realtime Altimeter?

Realtime Altimeter is rated higher. Spring Airlines averages 3.0 out of 5 from 20 ratings, while Realtime Altimeter averages 4.7 from 442 ratings.

### Do Spring Airlines or Realtime Altimeter have ads?

Both Spring Airlines and Realtime Altimeter show ads.

### Which is updated more often, Spring Airlines or Realtime Altimeter?

Spring Airlines ships an update every 10 days, and Realtime Altimeter every 2 weeks. Most recently, Spring Airlines was updated on November 1, 2026 and Realtime Altimeter 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.*