# Group SMS vs Kyanite Pro

The clearest difference is in-app purchases: Group SMS at none against Kyanite Pro's 2. Kyanite Pro's advantage is update cadence (every 5 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Kyanite Pro sells 2 in-app purchases, starting at $3.99 per month. Group SMS asks for nothing beyond the download.

Group SMS ships an update every 6 months, Kyanite Pro every 5 days. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Group SMS | Kyanite Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kyanite-pro/id6802395850/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 41 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bahtiyar Polat](https://appshunter.io/developer/354062184) | [Mike Haynes](https://appshunter.io/developer/6802395852) |

## What reviewers say

### Group SMS

[App page](https://appshunter.io/ios/app/group-sms-bulk-text-messaging/id396353721)

Send the same message to multiple contacts simultaneously without individual copy-pasting. Create groups for efficient communication and save significant time when messaging several people at once.

**Highlights:** Create contact groups, Send one message to many, Time-saving utility, Efficient group communication

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

**In-app purchases:** none


### Kyanite Pro

[App page](https://appshunter.io/ios/app/kyanite-pro/id6802395850)

This app offers a suite of offline drilling calculators and reference tools for oil and gas professionals. It includes features for mud engineers, cementers, and directional drillers, with options to share data with crews. A free tier provides basic tools, while a subscription unlocks advanced calculators and job sheets.

**Highlights:** Offline drilling calculators, Mud, cement, and directional drilling tools, Field notes and reference charts, Crew data sharing, Kill sheet and cement job sheet, Chemical inventory management

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kyanite Pro Monthly | $3.99 | per month |
| Kyanite Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is Group SMS free?

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

### Is Kyanite Pro free?

Kyanite Pro is free to download, with in-app purchases available.

### Do Group SMS or Kyanite Pro have ads?

Neither Group SMS nor Kyanite Pro shows ads.

### Which is updated more often, Group SMS or Kyanite Pro?

Group SMS ships an update every 6 months, and Kyanite Pro every 5 days. Most recently, Group SMS was updated on October 8, 2026 and Kyanite Pro on October 16, 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.*