# Collins Stage Sync vs TET LITHIUM

The clearest difference is update cadence: Collins Stage Sync at every 12 months against TET LITHIUM's every 32 months. TET LITHIUM's advantage is iOS requirement (9.0 vs 15.0). 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.

Collins Stage Sync ships an update every 12 months, TET LITHIUM every 32 months. The most recent releases landed on September 10, 2026 and May 15, 2026 respectively.

## The numbers

| Metric | Collins Stage Sync | TET LITHIUM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 32 months |
| Size | 7 MB | 7 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rockwell Collins, Inc.](https://appshunter.io/developer/379086069) | [宇文 钟](https://appshunter.io/developer/1541529609) |

## What reviewers say

### Collins Stage Sync

[App page](https://appshunter.io/ios/app/collins-stage-sync/id1161812020)

**Features:** macOS Compatibility

**In-app purchases:** none


### TET LITHIUM

[App page](https://appshunter.io/ios/app/tet-lithium/id1542310415)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Collins Stage Sync free?

Collins Stage Sync is free to download, with no in-app purchases.

### Is TET LITHIUM free?

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

### Do Collins Stage Sync or TET LITHIUM have ads?

Neither Collins Stage Sync nor TET LITHIUM shows ads.

### Which is updated more often, Collins Stage Sync or TET LITHIUM?

Collins Stage Sync ships an update every 12 months, and TET LITHIUM every 32 months. Most recently, Collins Stage Sync was updated on September 10, 2026 and TET LITHIUM on May 15, 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.*