# IYKYKnow vs TrimTabs

The clearest difference is in-app purchases: TrimTabs at none against IYKYKnow's 2. TrimTabs also leads on update cadence (every 2 days vs fortnightly) and device support (4 vs 2). IYKYKnow's advantage is iOS requirement (13.0 vs 15.0). On price and ads there is nothing between them.

Both are free to download. IYKYKnow sells 2 one-off in-app purchases. TrimTabs asks for nothing beyond the download.

IYKYKnow ships an update fortnightly, TrimTabs every 2 days. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | IYKYKnow | TrimTabs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (48 ratings)](https://appshunter.io/ios/app/iykyknow/id1526156980/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 3 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Aniruddha Kadam](https://appshunter.io/developer/1526156982) | [justin beech](https://appshunter.io/developer/1869146075) |

## What reviewers say

### IYKYKnow

[App page](https://appshunter.io/ios/app/iykyknow/id1526156980)

This utility app allows you to send invisible messages within your existing messaging applications. It helps maintain privacy and avoid suspicion when communicating secretly. The app ensures no server communication for encryption, keeping your data local.

**Highlights:** Invisible message sending, Works with iMessage, SMS, WhatsApp, Telegram, Compatible with email apps, Privacy-focused, no server communication, Local encryption and decryption

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Icon Pack | $0.99 | one-time |
| App Secret Mode | $2.99 | one-time |


### TrimTabs

[App page](https://appshunter.io/ios/app/trimtabs/id6759307090)

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is IYKYKnow free?

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

### Is TrimTabs free?

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

### Do IYKYKnow or TrimTabs have ads?

Neither IYKYKnow nor TrimTabs shows ads.

### Which is updated more often, IYKYKnow or TrimTabs?

IYKYKnow ships an update fortnightly, and TrimTabs every 2 days. Most recently, IYKYKnow was updated on October 5, 2026 and TrimTabs 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.*