# Rattlegram vs Planet

The clearest difference is update cadence: Planet at weekly against Rattlegram's every 9 months. Planet also leads on iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rattlegram ships an update every 9 months, Planet weekly. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Rattlegram | Planet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (23 ratings)](https://appshunter.io/ios/app/rattlegram/id1664526096/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | Free | — |
| Size | 1 MB | 40 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [aicodix GmbH](https://appshunter.io/developer/1664526098) | [Apparent Labs, LLC](https://appshunter.io/developer/1885268693) |

## What reviewers say

### Rattlegram

[App page](https://appshunter.io/ios/app/rattlegram/id1664526096)

This app utilizes advanced COFDM technology for audio-based SMS transmission. It supports various modes with specific encoding and modulation techniques, requiring minimal bandwidth for efficient data transfer.

**Highlights:** COFDM technology, Audio-based SMS, 160 ms OFDM symbols, Differential PSK modulation, Forward error correction, Low bandwidth requirement

**In-app purchases:** none


### Planet

[App page](https://appshunter.io/ios/app/planet-were-going/id6771613864)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rattlegram free?

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

### Is Planet free?

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

### Do Rattlegram or Planet have ads?

Neither Rattlegram nor Planet shows ads.

### Which is updated more often, Rattlegram or Planet?

Rattlegram ships an update every 9 months, and Planet weekly. Most recently, Rattlegram was updated on October 11, 2026 and Planet on October 18, 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.*