# RainMaker_CWIP vs Altimeter & Barometer Pro

The clearest difference is in-app purchases: RainMaker_CWIP at none against Altimeter & Barometer Pro's 2. RainMaker_CWIP also leads on iOS requirement (15.6 vs 18.0). Altimeter & Barometer Pro's advantage is update cadence (every 6 days vs every 12 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Altimeter & Barometer Pro sells 2 in-app purchases, starting at $7.99 per year. RainMaker_CWIP asks for nothing beyond the download.

RainMaker_CWIP ships an update every 12 months, Altimeter & Barometer Pro every 6 days. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RainMaker_CWIP | Altimeter & Barometer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (570 ratings)](https://appshunter.io/ios/app/altimeter-and-barometer-pro/id1601138859/reviews)** |
| Number of ratings | — | **570** |
| Positive reviews | — | 84.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 7 MB | 30 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Weather Modification LLC](https://appshunter.io/developer/1760043171) | [Bog Bridges LLC](https://appshunter.io/developer/1480079828) |

## What reviewers say

### RainMaker_CWIP

[App page](https://appshunter.io/ios/app/rainmaker-cwip/id1353125034)

**In-app purchases:** none


### Altimeter & Barometer Pro

[App page](https://appshunter.io/ios/app/altimeter-and-barometer-pro/id1601138859)

Continuously record barometric pressure and altitude using your device's sensors. Visualize trends with interactive graphs, receive weather alerts, and track ascent/descent. Features a standalone Apple Watch app and a global pressure map.

**Highlights:** Continuous barometric pressure and altitude recording, Interactive trend graphs, Barometric pressure alerts, Standalone Apple Watch app, Global pressure map, Real-time wind analyzer, Weather station data and forecasts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $7.99 | per year |
| Alti-Barometer customer trial | Free | one-time |

**What reviewers like**

- 🚀 Excellent barometer and altimeter features
- 👍 User-friendly interface
- 💡 Innovative wind estimator
- 🔒 Respects user privacy
- 🔥 Highly recommended by users

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔋 High battery consumption reported
- 💰 Paid subscription model concerns some users

**Reported bugs**

- Wind estimator feature not working properly
- Pressure data reset issue for some users
- Apple Watch connectivity problems

**Requested features**

- Longer historical data graphs
- Customizable pressure drop alerts
- Metric unit support
- Outdoor temperature in complications


## Frequently asked questions

### Is RainMaker_CWIP free?

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

### Is Altimeter & Barometer Pro free?

Altimeter & Barometer Pro is free to download, with in-app purchases available.

### Do RainMaker_CWIP or Altimeter & Barometer Pro have ads?

Neither RainMaker_CWIP nor Altimeter & Barometer Pro shows ads.

### Which is updated more often, RainMaker_CWIP or Altimeter & Barometer Pro?

RainMaker_CWIP ships an update every 12 months, and Altimeter & Barometer Pro every 6 days. Most recently, RainMaker_CWIP was updated on October 26, 2026 and Altimeter & Barometer Pro on October 30, 2026.

---

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