# ESA App vs ThinkByte

The clearest difference is in-app purchases: ESA App at none against ThinkByte's 1. ESA App also leads on update cadence (every 3 days vs fortnightly) and iOS requirement (11.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. ThinkByte sells 1 one-off in-app purchase. ESA App asks for nothing beyond the download.

ESA App ships an update every 3 days, ThinkByte fortnightly. The most recent releases landed on October 26, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ESA App | ThinkByte |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (12 ratings)](https://appshunter.io/ios/app/thinkbyte-offline-local-ai/id6746089787/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 64 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [QBAYAR SDN. BHD.](https://appshunter.io/developer/1408563282) | [ByteInk L.L.C-FZ](https://appshunter.io/developer/1765895279) |

## What reviewers say

### ESA App

[App page](https://appshunter.io/ios/app/esa-app/id1456715920)

**Features:** macOS Compatibility

**In-app purchases:** none


### ThinkByte

[App page](https://appshunter.io/ios/app/thinkbyte-offline-local-ai/id6746089787)

This AI assistant operates entirely on your device, offering private and fast responses without internet access. It's ideal for brainstorming, learning, and getting writing support, ensuring your data remains secure and local.

**Highlights:** Fully offline AI operation, Private and secure on-device data, Instant AI responses, Choice of local AI models, Writing and learning support, No accounts or tracking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $9.99 | one-time |


## Frequently asked questions

### Is ESA App free?

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

### Is ThinkByte free?

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

### Do ESA App or ThinkByte have ads?

Neither ESA App nor ThinkByte shows ads.

### Which is updated more often, ESA App or ThinkByte?

ESA App ships an update every 3 days, and ThinkByte fortnightly. Most recently, ESA App was updated on October 26, 2026 and ThinkByte on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*