# Text to Speech AI vs simREF

The clearest difference is price: simREF at Free against Text to Speech AI's $1.99. Text to Speech AI's advantage is in-app purchases (none vs 2) and update cadence (every 2 days vs every 2 weeks). On ads, device support and iOS requirement there is nothing between them.

simREF is free to download; Text to Speech AI costs $1.99 up front. simREF sells 2 one-off in-app purchases. Text to Speech AI asks for nothing beyond the download.

Text to Speech AI ships an update every 2 days, simREF every 2 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Text to Speech AI | simREF |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/simref/id6753267206/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 148 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 17+ |
| Developer | [Ashen Ishanka Costha](https://appshunter.io/developer/1566497857) | [Chris-Luca Fischer](https://appshunter.io/developer/1843257076) |

## What reviewers say

### Text to Speech AI

[App page](https://appshunter.io/ios/app/text-to-speech-ai/id6448982880)

**Features:** macOS Compatibility

**In-app purchases:** none


### simREF

[App page](https://appshunter.io/ios/app/simref/id6753267206)

This app provides quick-reference checklists and operational data for flight simulation on iPad. It features interactive normal and abnormal checklists, essential flight data, and a CG/Trim calculator for takeoff planning in a distraction-free, dark UI optimized for cockpit environments.

**Highlights:** Interactive Normal & Abnormal Checklists, Operational Data at a glance, CG/Trim calculator, Offline functionality, Dark UI for cockpit environments, iPad landscape optimized

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IndiGo Virtual Integration | $2.99 | one-time |
| simREF Full Access | $8.99 | one-time |


## Frequently asked questions

### Is Text to Speech AI free?

Text to Speech AI costs $1.99, with no in-app purchases.

### Is simREF free?

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

### Do Text to Speech AI or simREF have ads?

Neither Text to Speech AI nor simREF shows ads.

### Which is updated more often, Text to Speech AI or simREF?

Text to Speech AI ships an update every 2 days, and simREF every 2 weeks. Most recently, Text to Speech AI was updated on October 7, 2026 and simREF on October 11, 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.*