# Rainfall Calculator vs Pebblebee

The clearest difference is price: Pebblebee at Free against Rainfall Calculator's $2.99. Pebblebee also leads on update cadence (every 3 weeks vs every 29 months) and ratings volume (143 vs 1). Rainfall Calculator's advantage is device support (3 vs 1) and iOS requirement (13 vs 16.2). On rating, ads and in-app purchases there is nothing between them.

Pebblebee is free to download; Rainfall Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Rainfall Calculator against 4.9 for Pebblebee. That said, the two scores are not equally well evidenced: Pebblebee has 143 ratings behind it against 1, so its average is the more settled of the two.

Rainfall Calculator ships an update every 29 months, Pebblebee every 3 weeks. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Rainfall Calculator | Pebblebee |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rainfall-calculator/id1446150880/reviews)** | [4.9 (143 ratings)](https://appshunter.io/ios/app/pebblebee/id6739783037/reviews) |
| Number of ratings | 1 | **143** |
| Positive reviews | — | 35.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 56 MB |
| Requires iOS | **13** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [PebbleBee LLC](https://appshunter.io/developer/888957833) |

## What reviewers say

### Rainfall Calculator

[App page](https://appshunter.io/ios/app/rainfall-calculator/id1446150880)

Calculate potential rainwater harvest volume and cost savings. This tool helps determine annual water collection capacity based on rainfall and roof area, recommending optimal tank sizes for efficient water storage. It also allows for cost-saving analysis by comparing harvested water to mains water prices.

**Highlights:** Instant rainwater calculation, Cost savings evaluation, Minimum tank size recommendation, Supports various input units, Formula references included, Results copyable to other apps

**Features:** macOS Compatibility

**In-app purchases:** none


### Pebblebee

[App page](https://appshunter.io/ios/app/pebblebee/id6739783037)

This app helps you locate your belongings like keys and bags using Bluetooth and crowdsourced networks. It also offers safety features like an emergency alert and secure messaging with finders.

**Highlights:** Bluetooth item finding, Global crowdsourced tracking, Emergency alert with strobe and siren, Location sharing with trusted contacts, Phone finder via device double-tap, Secure messaging with finders, Device firmware management

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

**In-app purchases:** none


## Frequently asked questions

### Is Rainfall Calculator free?

Rainfall Calculator costs $2.99, with no in-app purchases.

### Is Pebblebee free?

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

### Which has better reviews, Rainfall Calculator or Pebblebee?

Rainfall Calculator is rated higher. Rainfall Calculator averages 5.0 out of 5 from 1 ratings, while Pebblebee averages 4.9 from 143 ratings.

### Do Rainfall Calculator or Pebblebee have ads?

Neither Rainfall Calculator nor Pebblebee shows ads.

### Which is updated more often, Rainfall Calculator or Pebblebee?

Rainfall Calculator ships an update every 29 months, and Pebblebee every 3 weeks. Most recently, Rainfall Calculator was updated on October 13, 2026 and Pebblebee on October 14, 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.*