# Tether | algorithm vs Secretly

The clearest difference is device support: Secretly at 3 against Tether | algorithm's 1. Secretly also leads on iOS requirement (15.5 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Tether | algorithm | Secretly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 34 MB | 176 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Jason Hindley](https://appshunter.io/developer/1774084587) | [Secretly SIA](https://appshunter.io/developer/1848856937) |

## What reviewers say

### Tether | algorithm

[App page](https://appshunter.io/ios/app/tether-algorithm-free-social/id6736961386)

**Features:** Apple Wallet

**In-app purchases:** none


### Secretly

[App page](https://appshunter.io/ios/app/secretly-secure-messenger/id6760417329)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tether | algorithm free?

Tether | algorithm is free to download, with no in-app purchases.

### Is Secretly free?

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

### Do Tether | algorithm or Secretly have ads?

Neither Tether | algorithm nor Secretly shows ads.

### Which is updated more often, Tether | algorithm or Secretly?

Tether | algorithm ships an update weekly, and Secretly weekly. Most recently, Tether | algorithm was updated on October 3, 2026 and Secretly on October 1, 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.*